canon rumors FORUM

Gear Talk => EOS Bodies - For Stills => Topic started by: Canon Rumors on December 12, 2012, 01:28:34 PM

Title: Canon EOS 6D Rating by DXOMark
Post by: Canon Rumors on December 12, 2012, 01:28:34 PM
From DXOMark
DXO has released their impressions of the Canon EOS 6D pretty quickly. The camera receives a sensor score 82, which is on part with most of the Canon lineup.

From DXOMark
“The EOS 6D offers a well-balanced performance across all three testing metrics, doing enough to put it into 10th place overall on the sensor rankings. Given the price, this does offer very good value for money, matched only by the Nikon D600. It suggests that this new market segment could be a real hotbed of key models for the major manufacturers and is therefore one to watch carefully.”

CR’s Take
I just got my hands on an EOS 6D today, so I’m not yet a good person to ask as to whether or not the camera is a winner. I do like the size and weight, I’m all about trimming weight wherever I can in my kit. Give me a week or so, then you can start asking me your questions.

Canon EOS 6D for $2099 at B&H Photo | Amazon | Norman | Adorama

Canon EOS 6D w/24-105 f/4L IS for $2699 ($200 off) at B&H Photo | Amazon | Norman | Adorama

cr

 

Title: Re: Canon EOS 6D Rating by DXOMark
Post by: hemidesign on December 12, 2012, 01:38:11 PM
To be honest.. I really don't like and I Don't believe in this DXO mark website..
They have been paid by Nikon to update and posts all this fake numbers.. bunch of BS!
PISSES ME OOFFFF!!!

Many complains over the net:

http://fakechuckwestfall.wordpress.com/2012/05/14/5d-mark-iii-d800-d4-dxomark-sucks-balls/ (http://fakechuckwestfall.wordpress.com/2012/05/14/5d-mark-iii-d800-d4-dxomark-sucks-balls/)

http://theonlinephotographer.typepad.com/the_online_photographer/2012/03/nikon-beat-canon.html (http://theonlinephotographer.typepad.com/the_online_photographer/2012/03/nikon-beat-canon.html)

http://www.thephotoforum.com/forum/canon/304436-1dx-finally-reviewed-rated-dxomark.html (http://www.thephotoforum.com/forum/canon/304436-1dx-finally-reviewed-rated-dxomark.html)

http://forums.anandtech.com/showthread.php?t=2271640 (http://forums.anandtech.com/showthread.php?t=2271640)
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: Pitbullo on December 12, 2012, 02:02:28 PM
No need to take it personal, it is not a bad camera, just because the Nikons are, sensor wise, better pixel by pixel. At least on low ISO. However, the 6D (and other Canons) are the better ones at higher ISO. No big news! The DXO tests does not say which camera is better, just how the sensors perform.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: heptagon on December 12, 2012, 02:08:18 PM
Is it just me or does the 6D sensor slightly outperform the 5D3 sensor in dynamic range and is on par in everything else? Maybe Canon started moving and can improve their sensor performance after all.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: Pitbullo on December 12, 2012, 02:13:44 PM
It looks like the 6D is performing very well! It seems like they are polishing the current sensor tech.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: Rocky on December 12, 2012, 02:34:02 PM
<div name=\"googleone_share_1\" style=\"position:relative;z-index:5;float: right; /*margin: 70px 0 0 0;*/ top:70px; right:120px; width:0;\"><g:plusone size=\"tall\" count=\"1\" href=\"http://www.canonrumors.com/2012/12/canon-eos-6d-rating-by-dxomark/\"></g:plusone></div><div style=\"float: right; margin:0 0 70px 70px;\"><a href=\"https://twitter.com/share\" class=\"twitter-share-button\" data-count=\"vertical\" data-url=\"http://www.canonrumors.com/2012/12/canon-eos-6d-rating-by-dxomark/\">Tweet</a></div>
<strong>From DXOMark<br />


</strong>DXO has released their impressions of the Canon EOS 6D pretty quickly. The camera receives a sensor score 82, which is on part with most of the Canon lineup.</p>
<p><strong>From DXOMark<br />


</strong><em>“The EOS 6D offers a well-balanced performance across all three testing metrics, doing enough to put it into 10th place overall on the sensor rankings. Given the price, this does offer very good value for money, matched only by the Nikon D600. It suggests that this new market segment could be a real hotbed of key models for the major manufacturers and is therefore one to watch carefully.”</em></p>
<p><strong>CR’s Take<br />


</strong>I just got my hands on an EOS 6D today, so I’m not yet a good person to ask as to whether or not the camera is a winner. I do like the size and weight, I’m all about trimming weight wherever I can in my kit. Give me a week or so, then you can start asking me your questions.</p>
<p><em><strong>Canon EOS 6D for $2099 at <a href=\"http://www.bhphotovideo.com/c/product/892349-REG/Canon_8035b002_EOS_6D_Digital_Camera.html/bi/2466/kbid/3296\" target=\"_blank\">B&H Photo</a> | <a href=\"http://www.amazon.com/gp/product/B009B0MZ8U/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B009B0MZ8U&linkCode=as2&tag=canorumo-20\" target=\"_blank\">Amazon</a> | <a href=\"http://www.normancamera.com/index/page/product/product_id/26833/product_name/Canon+EOS+6D+Digital+Camera+%28Body+Only%29+\" target=\"_blank\">Norman</a> | <a href=\"http://www.adorama.com/ICA6D.html?kbid=64393\" target=\"_blank\">Adorama</a></strong></em></p>
<p><em><strong>Canon EOS 6D w/24-105 f/4L IS for $2699 ($200 off) at <a href=\"http://www.bhphotovideo.com/c/product/892354-REG/Canon_8035b009_EOS_6D_Digital_Camera.html/bi/2466/kbid/3296\" target=\"_blank\">B&H Photo</a> | <a href=\"http://www.amazon.com/gp/product/B009B0MZG2/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B009B0MZG2&linkCode=as2&tag=canorumo-20\" target=\"_blank\">Amazon</a> | <a href=\"http://www.normancamera.com/index/page/product/product_id/26834/product_name/Canon+EOS+6D+Digital+Camera+with+Canon+24-105mm+f4.0L+IS+USM+AF+Lens\" target=\"_blank\">Norman</a> | <a href=\"http://www.adorama.com/ICA6DK.html?kbid=64393\" target=\"_blank\">Adorama</a></strong></em></p>
<p><strong><span style=\"color: #ff0000;\">c</span>r</strong></p>
<p><strong> </strong></p>


Please write a review about it. you have done agood job in the past. Thansk you.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: Dylan777 on December 12, 2012, 02:50:09 PM
My 2cents:
Besides lacking of AF points, chassis is on smaller size, slower fps....I do think this is a good entry level FF camera for those looking for better ISO and clearner images. It fits well for landscape/portrait shooters. 

Title: Re: Canon EOS 6D Rating by DXOMark
Post by: joshmurrah on December 12, 2012, 03:01:47 PM
To be honest.. I really don't like and I Don't believe in this DXO mark website..
They have been paid by Nikon to update and posts all this fake numbers.. bunch of BS!
PISSES ME OOFFFF!!!

Many complains over the net:

http://fakechuckwestfall.wordpress.com/2012/05/14/5d-mark-iii-d800-d4-dxomark-sucks-balls/ (http://fakechuckwestfall.wordpress.com/2012/05/14/5d-mark-iii-d800-d4-dxomark-sucks-balls/)


I chuckled when I realized that you included a parody site in your URLs.  Like you, I don't really use DXOMark in my camera shopping / comparisons since their ratings are... odd... but it was still funny.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: jocau on December 12, 2012, 03:22:07 PM
Nice to see that the 6D has a better DR score than the much more expensive 5D3 and 1Dx. Weakest point of the 6D is its AF system. But then again, people could shoot sports back in the days when cameras were manual focus only. Makes me wonder if we have become noobs because we need a great AF system (e.g. 5D3) to shoot sports nowadays...
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: infared on December 12, 2012, 03:44:58 PM
DxOMark?...rating?...who cares...can we get a rating from a source that matters?  ;D
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: hmmm on December 12, 2012, 04:40:09 PM
Remember the parody videos on youtube for Hitler learns that the 7D will be shipping late, etc.?

It would make a good parody to see him ranting and raving about the 11 point AF and the dxomark scores...  and then at the end telling his generals...  OK... just get me a 6D now!!!  At least it doesn't have all those oil spots...
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: heptagon on December 12, 2012, 07:13:12 PM
Is it just me or does the 6D sensor slightly outperform the 5D3 sensor in dynamic range and is on par in everything else? Maybe Canon started moving and can improve their sensor performance after all.
yes they  can but it cost, they can shorten the analog signal way, more readout points/ADC .
They could surely get rid of the adjustable preamplifier and improve noise/DR performance at low ISO. High ISO would suffer but that doesn't matter in the studio.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: seta666 on December 13, 2012, 09:13:40 AM
I am fed up of all this people that say DXOmark results are fake, normally these tend to be Canon trolls.

Do yourself a favour; go to dpreview and download the raws from D600, D800, 5D mkIII and 6D (if available)

Then you can process those files yourself as I did and you will se the huge difference in DR, specially at base ISO

here http://farm9.staticflickr.com/8038/7905600204_90e8ededef_o.jpg (http://farm9.staticflickr.com/8038/7905600204_90e8ededef_o.jpg) you can see 100% crops of 6 cameras at iso 100 scaled to 25mpx (so they all have same size)

first row shows the original 100% crops and the second row shows  same area with +4EV exposure

In my opinion the ranking would be:
1º C  D800 2º A Pentax K5  3º F Sony NEX-5N 4º D Canon 5D mkIII 5º E 5D mkII 6º B Canon 60D

This test only shows DR at base ISO, and it proves DXOmark is right

By the way, I own a EOS 5DmkII and before that an EOS 5D, EOS 40D and EOS 1000D.
My second body now is an APS-C Sony NEX 5N as Canon APS-C sensors are a big piece of noisy crap

Regards
Javier
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: Ricku on December 13, 2012, 09:37:58 AM
^^^ This man speaks the truth.

The problem is not "faked ratings" by DXO. The problem is Canon's old sensor tech. I have used both the D800 and the 5D3. The DR and post processing abilities with the D800 RAW-files are nothing but amazing!

The 5D3, not so much.  :-\

The 6D might be a tad better than the 5D3, but it is still far from good enough if you consider what Nikon (the main competitor) has.

However, I still believe that Canon will catch up.. Some day..
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: neuroanatomist on December 13, 2012, 09:40:07 AM
I am fed up of all this people that say DXOmark results are fake, normally these tend to be Canon trolls.

There are a very, very tiny number of people who claim the DxOMark data are fake, and they are marginal and obvious trolls.  But there is a rather large group of people who understand that DxOMark's Sensor Scores (note: Scores, not measurements) are not a good measure of overall sensor performance, and are not universally applicable to all shooting situations.  Some people care about things other than DR at base ISO.

I am fed up with all the people who think the only thing inside that magnesium alloy or polycarbonate shell is a CMOS image sensor, and that DxOMark Scores are the sole determinant of camera performance.   Normally those tend to be Nikon trolls.   :P
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: jocau on December 13, 2012, 01:50:26 PM
If you have to raise your exposure by 4 stops afterwards, you are not 'very good' at nailing the exposure... Then again, it's nice to be able to do that without introducing a lot of noise.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: Ricku on December 13, 2012, 02:08:06 PM
If you have to raise your exposure by 4 stops afterwards, you are not 'very good' at nailing the exposure... Then again, it's nice to be able to do that without introducing a lot of noise.
Wow! Another clueless self proclaimed expert, making a fool out of himself with the "proper exposure-comment".

Unbelievable! :D That's all I have to say.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: jocau on December 13, 2012, 02:26:01 PM
If you have to raise your exposure by 4 stops afterwards, you are not 'very good' at nailing the exposure... Then again, it's nice to be able to do that without introducing a lot of noise.
Wow! Another clueless self proclaimed expert, making a fool out of himself with the "proper exposure-comment".

Unbelievable! :D That's all I have to say.

I'm no expert at all, but I never ever had to go past +2EV. Probably because I'm not a landscape shooter. I'm also a person who thinks that shadows need to stay true to their nature i.e. being dark and not revealing a lot of detail.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: seta666 on December 13, 2012, 09:10:47 PM
@ neuroanatomists: You are right, there is lots of things that make a camera, but DXOmark only reviews sensors and this is what I am talking about here. In film days people would choose to use Kodachrome, velvia or whichever film they would like. Todays film are sensors, and Sony sensors (nikon, pentax even olympus now) are the best

I never saw anyone at Dxomark saying canon cameras are bad, they only talk about sensors and what they say is that canon sensor technology has a problem at base ISO. At high ISO all this cameras are about the same (I mean the full frame cameras, 5D mkII, 5D mkIII and D800) but at base ISO the difference in my opinion is huge

In my opinion Canon makes very good cameras and lenses, but very bad sensors

@jocau: One of the only advantages film still has over Digital sensors is Latitude (aka DR), today Sony sensors offer a very high latitude (still a bit far from best film results). I remember seeing an example of almost 20EV film shot (Backlight shot with shadow recovery).  One advantage of film also is that DR is high even at high ISO, with digital at high ISOs DR tends to be low

Resolution wise and for High ISO film has been surpased by digital long ago.

Some scenes may need 7EV DR and some others may need 14+ EV, so high DR capabities are always very wellcome. As an example I can asure you that the blacks I get from my 5D mkII have no texture information at all,  nothing I can extract from them


I am a macro photographer (working from 1:1 to 100:1); I work with focus stacking technique on tripod. Until now the only cameras I could use were Canon as they were the only cameras offering EFSC (Electronic first shutter curtain), a very important feature in macro photography. Now also the Sony NEX cameras offer this feature, also the nikon 1 system and panasonic G5 so I am not stuck with Canon anymore

 Af all the systems you can get today with EFSC sony nex offers the best base ISO with good DR, low noise and good colours I would qualify NEX 5N output image quality between EOS 5D and EOS 5d mkII with better DR than both but slightly lower resolution than EOS 5D mkII

Every photographer has different priorities and my priorities are as folows:

1- EFSC     Very important for working with continious light in macro
2- Good base ISO   Working on tripod I normally use ISO 100
3- EF compatibility   You can use EF lenses on NEX cameras via adapter, like the MP-E

AF, video, continious shotting, viewfinder, etc are all secondary to my needs but I understand a sports, landscape, wedding, fashion, etc.. photographer will have completely different needs than I do.





Title: Re: Canon EOS 6D Rating by DXOMark
Post by: Botts on December 13, 2012, 10:14:12 PM
Nice to see that the 6D has a better DR score than the much more expensive 5D3 and 1Dx. Weakest point of the 6D is its AF system. But then again, people could shoot sports back in the days when cameras were manual focus only. Makes me wonder if we have become noobs because we need a great AF system (e.g. 5D3) to shoot sports nowadays...

I think the quantity of great sport shots has increased greatly over the manual focus AF days.  I would imagine in the olden days, people shot with relatively smaller apertures, and focused on the line of scrimmage.  I just looked back on Google to find photos from Super Bowls of old, and it appears that almost all of the images were taken of players near the line.  I would think the other shots were taken by focusing on a yard line for example, and waiting for the player to enter the zone of sharp focus, then shoot.

In this sense, I would think that having AF greatly improves the variety of sport shots.

I am fed up with all the people who think the only thing inside that magnesium alloy or polycarbonate shell is a CMOS image sensor, and that DxOMark Scores are the sole determinant of camera performance.   Normally those tend to be Nikon trolls.   :P

Agreed.  AF, FPS continuous, video options matter greatly to different real-world photographers.

You could give an NFL sideline photographer a D800 with it's super sensor, or a 1D3.  The D800 may have a better sensor, but that NFL photographer would certainly notice the 4 FPS difference (w/grip) or 6 FPS difference (w/o grip).

A starting-out wedding videographer could choose between the 5D2/6D or D600, the D600 may have a technically better sensor, but not having aperture control in video would be a dealbreaker for the D600.

Alternatively, a landscape or studio shooter, may prefer the D800 to the Canon's
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: hmcindie on December 14, 2012, 09:38:06 AM
A couple of reasons DXOMark is suspect:

Fujifilm X100. It's score is just a travesty. A great sensor, very good on lowlight. According to DXOMark it's not that good in lowlight. I used it and was pleasently surprised about the noise.

Compare for yourself.

http://www.dpreview.com/reviews/studio-compare#baseDir=%2Freviews_data&cameraDataSubdir=boxshot&indexFileName=boxshotindex.xml&presetsFileName=boxshotpresets.xml&showDescriptions=false&headerTitle=Studio%20scene&headerSubTitle=Standard%20studio%20scene%20comparison&masterCamera=fujifilm_x100&masterSample=dscf2567.acr&slotsCount=4&slot0Camera=fujifilm_x100&slot0Sample=dscf2567.acr&slot0DisableCameraSelection=true&slot0DisableSampleSelection=true&slot0LinkWithMaster=true&slot1Camera=canon_eos5dmkiii&slot1Sample=5d3_5215.acr&slot2Camera=sony_nex5n&slot2Sample=dsc00790.acr&slot3Camera=sony_nex7&slot3Sample=dsc03038.acr&x=0.449302632664851&y=0.21231062322812788 (http://www.dpreview.com/reviews/studio-compare#baseDir=%2Freviews_data&cameraDataSubdir=boxshot&indexFileName=boxshotindex.xml&presetsFileName=boxshotpresets.xml&showDescriptions=false&headerTitle=Studio%20scene&headerSubTitle=Standard%20studio%20scene%20comparison&masterCamera=fujifilm_x100&masterSample=dscf2567.acr&slotsCount=4&slot0Camera=fujifilm_x100&slot0Sample=dscf2567.acr&slot0DisableCameraSelection=true&slot0DisableSampleSelection=true&slot0LinkWithMaster=true&slot1Camera=canon_eos5dmkiii&slot1Sample=5d3_5215.acr&slot2Camera=sony_nex5n&slot2Sample=dsc00790.acr&slot3Camera=sony_nex7&slot3Sample=dsc03038.acr&x=0.449302632664851&y=0.21231062322812788)

http://www.dxomark.com/index.php/Cameras/Compare-Camera-Sensors/Compare-cameras-side-by-side/%28appareil1%29/795 (http://www.dxomark.com/index.php/Cameras/Compare-Camera-Sensors/Compare-cameras-side-by-side/%28appareil1%29/795)|0/%28brand%29/Canon/%28appareil2%29/737|0/%28brand2%29/Sony/%28appareil3%29/695|0/%28brand3%29/Fujifilm

DXOMarks score doesn't make any sense.

Other odd thing is the Sony nex-5n. I have that camera. I also have the Canon 7d. Using both the same lens, I get pretty much the same kind off images. Canon 7d is better with high ISO's and the 5n is slightly better in ISO 100. But still people say that Canon is using old tech? What the f... 5n is newer but the sensor isn't better at all. I do not get any better pictures with the 5n, no extra dynamic range, actually it's highlight handling is worse with haloing around bright objects and sometimes vertical streaks (shown when shadows boosted in high iso). I get better pictures with the 7d. And the 7d is OLD.

I think it's complete wrongness to say that EVERY Canon sensor is now suddenly "old tech". Well how come the 5n is about as good as the 7d sensor wise? Yes, the D800 has a great sensor but how do you extrapolate that to EVERY sensor and EVERY camera from a certain manufacturer? The new Nikons other than the D800 are not nearly as good.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: seta666 on December 14, 2012, 11:52:30 AM
Fujifilm X100. It's score is just a travesty. A great sensor, very good on lowlight. According to DXOMark it's not that good in lowlight. I used it and was pleasently surprised about the noise.

I also owned the X100 for a while, its ISO values are off by 2/3 EV. Is about the same as other APS-C cameras in high ISO

Quote
Well how come the 5n is about as good as the 7d sensor wise?
The EOS 5N is not as good and 7D , it is way better at base iso. At high ISO all APS-C cameras are about the same, is a base ISO were you see the biggest difference
http://farm9.staticflickr.com/8038/7905600204_90e8ededef_o.jpg (http://farm9.staticflickr.com/8038/7905600204_90e8ededef_o.jpg)
 B- Canon 60D   
 F- Sony NEX-5N

The difference in DR is huge in my opinion

Quote
Yes, the D800 has a great sensor but how do you extrapolate that to EVERY sensor and EVERY camera from a certain manufacturer? The new Nikons other than the D800 are not nearly as good.
Pentax K5 is still best APS-C sensor(Sony nex-5N and nikon D7000 are close by), nikon D600 sensor is as good as D800 sensor, NEX-7 and nikon D5200 have very good sensor despite their high pixel count.

Canon has been using same "old" 7D sensor in 60D, 550D, 600D, 650D and EOS-M. Why? because it is so good? No, because they can not do better right now

As I said before Canon sensor tecnology is old by todays (Sony) standards; how can you explain Sony APS-C sensors have better DR than any FF canon camera? Again, I talk about base ISO
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: David Hull on December 14, 2012, 01:23:08 PM
If you have to raise your exposure by 4 stops afterwards, you are not 'very good' at nailing the exposure... Then again, it's nice to be able to do that without introducing a lot of noise.
Wow! Another clueless self proclaimed expert, making a fool out of himself with the "proper exposure-comment".

Unbelievable! :D That's all I have to say.

And... YET ANOTHER clueless, pompous, self-proclaimed expert chimes in.
 
The guy has a valid point whether or not you agree with his understanding and definition of the term "exposure".  I have used the totally awful 5dII for years and have yet to find a shot where I needed to yank the bottom end 4 stops. 
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: David Hull on December 14, 2012, 01:25:18 PM
I am fed up of all this people that say DXOmark results are fake, normally these tend to be Canon trolls.

There are a very, very tiny number of people who claim the DxOMark data are fake, and they are marginal and obvious trolls.  But there is a rather large group of people who understand that DxOMark's Sensor Scores (note: Scores, not measurements) are not a good measure of overall sensor performance, and are not universally applicable to all shooting situations.  Some people care about things other than DR at base ISO.

I am fed up with all the people who think the only thing inside that magnesium alloy or polycarbonate shell is a CMOS image sensor, and that DxOMark Scores are the sole determinant of camera performance.   Normally those tend to be Nikon trolls.   :P

One of the better comments IMO, Quite well put.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: skitron on December 14, 2012, 01:41:27 PM
As I said before Canon sensor tecnology is old by todays (Sony) standards; how can you explain Sony APS-C sensors have better DR than any FF canon camera? Again, I talk about base ISO

Canon trades base ISO performance for high ISO performance.

Get a RAW from a 5D3 or 6D taken at 12,800 and compare it to a D800 RAW taken at 12,800. D800 gets spanked.

Get a RAW from a 5D3 or 6D taken at 100 and compare it to a D800 RAW taken at 100. D800 does the spanking.

I kinda like having these choices in the marketplace. Right now low light is most important to me so I got a Canon. If I were purely a bright light shooter, I'd get the Nikon.

As for DxO, it's their scoring system, they can do what they want. Personally, I ignore the DxO Mark and just look at the data. It's stupid IMO to try to quantify every parameter of sensor performance into a single number, but again, it's their system and they have a right to do it however they want.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: David Hull on December 14, 2012, 01:55:41 PM


In my opinion Canon makes very good cameras and lenses, but very bad sensors

This is not the case at all; in fact Canon's actual sensor is on par with anything that Sony makes.  One thing that you can easily see from the DxO data (if you know how to interpret it) is that the sensor itself is very quiet.  The inherent noise of the sensor itself is as low as anything Sony or Nikon have ever produced.  The trouble is the ADC architecture they have chosen to read the sensor data which appears to have a DR of around 12.5 bits (or stops).

The fact is that Canon had (and still DOES have) a top notch sensor design that is every bit as good as the others what they don’t appear to have is a similarly clever read out mechanism.  This is splitting hairs a bit, I agree but to say that Canon makes “very bad” sensors is technically incorrect and shows that you don’t really understand the issue.  Even in terms of QE (the efficiency that photons are converted to electrons that the camera electronics can work with) Canon is at 50% and Sony (D800) at 57%.  The actual sensor read out noise is roughly the same for both as indicated by the top end of the DxO DR curve.

As for the read out mechanism, it is also quite likely implemented using state of the art pipeline A to D converters, hardly OLD technology… but in light of what Sony has done, this is clearly no longer providing an optimal as a solution to the image capture problem.  It is also more expensive which should provide some encouragement to Canon shooters that they will whack this mole eventually.

Title: Re: Canon EOS 6D Rating by DXOMark
Post by: seta666 on December 14, 2012, 08:56:54 PM
This is not the case at all; in fact Canon's actual sensor is on par with anything that Sony makes.  One thing that you can easily see from the DxO data (if you know how to interpret it) is that the sensor itself is very quiet.  The inherent noise of the sensor itself is as low as anything Sony or Nikon have ever produced.  The trouble is the ADC architecture they have chosen to read the sensor data which appears to have a DR of around 12.5 bits (or stops).

Your stament is absolutely right, I did not use the right expresion. As you say the problem has to do with A/D Conversion and I guess it can not change without Canon going into patents issues with Sony.

Some people are also saying that canon has chosen to get good high iso instead of good base ISO, I do not think this is true. 

The S/N ratio on 5D mkIII vs D800 is the same on all ISOs as is Tonal Range; DR is the same at high ISO but at base ISO is far superior on the D800, color sensivity is superior on the D800 at all ISOs and that is with a much higher pixel count.

The S/N ratio on 6D vs D600 is superior on the D600 up to ISO 12.800; DR is way better o the D600 up to ISO 400, about the same up to ISO 3200 and better on the 6D from that on, color sensivity is superior on the D600
6D is superior at ISO 25.600

And if you compare the 7d vs NEX-7 the 24mpx sony sensor is better at everything despite of the higher pixel count, specialy at DR and color sensivity.

So, in my opinion Canon sensors are way behind. OK, if you need best possible output at ISO 25.600 then get a 1DX or a D4, again the nikon will have best base ISO


If canon used a similar A/D conversion as Sony it would probably have the best sensors, or at least on par; but this will not hapen until they find a way of doing so without going into patent issues with Sony

All this started because it´s become normal for canon users to refer to DXOmark results as false; for camera reviews there are many different sites, but for sensor readings DXOmark is the only one I trust.

Title: Re: Canon EOS 6D Rating by DXOMark
Post by: neuroanatomist on December 14, 2012, 09:09:56 PM
All this started because it´s become normal for canon users to refer to DXOmark results as false; for camera reviews there are many different sites, but for sensor readings DXOmark is the only one I trust.

Not all Canon users.  But again, while their Measurements are useful, their Scores are not, because they are biased (only considering base ISO for some parameters) and not fully disclosed (weighted formulae but what weightings?).

Bill Claff's data are also quite good (and mirror DxO in many regards, but give some additional insights - worth a look if you haven't seen them.
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: seta666 on December 14, 2012, 09:17:27 PM
Not all Canon users.  But again, while their Measurements are useful, their Scores are not, because they are biased (only considering base ISO for some parameters) and not fully disclosed (weighted formulae but what weightings?).

Bill Claff's data are also quite good (and mirror DxO in many regards, but give some additional insights - worth a look if you haven't seen them.

Again you are right, not all but many. Anyway, most complains (99.9%) about DXOmark results come from canon users, M4/3 users could complain a lot also but they do not as they seem to know the limits of their systems

I do not care about DXOmark scores, thay are a bit weird(although they use the same system for every camera). What I look at is at the measurements and by my own experience those are right.

 It is very easy for anyone to compare noise or DR,comparing things like color depth and color sensivitty are way more tricky (I guess you need some special software and gear)

Thank you for Bill Claff´s I remember seeing this site once but lost the link. His findings are pretty much the same as those of DXOmark (He must be another nikon troll  ;-)  5D mkII and mkIII are about the same and D800 and D600 are superior at all ISOs

I also tried those Dpreview RAWS at ISO 3200, same as before; all images resampled to 26mpx so they have same size.

http://farm9.staticflickr.com/8305/7905637706_e4a2461353_o.jpg (http://farm9.staticflickr.com/8305/7905637706_e4a2461353_o.jpg)

1º B Nikon D800 2º C Canon 5D mkIII 3º A Canon 5D mkII 4º F Sony NEX-5N 5º E Canon 60D 6º D Pentax K5

The reason I think K5 is the worst is because it "cooks" its RAWS from ISO 3200; but in real world situation all FF samples look about the same and all APS-C samples look the same; it would be very difficult to tell the difference. At base ISO those differences are way bigger
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: David Hull on December 15, 2012, 01:44:51 AM
This is not the case at all; in fact Canon's actual sensor is on par with anything that Sony makes.  One thing that you can easily see from the DxO data (if you know how to interpret it) is that the sensor itself is very quiet.  The inherent noise of the sensor itself is as low as anything Sony or Nikon have ever produced.  The trouble is the ADC architecture they have chosen to read the sensor data which appears to have a DR of around 12.5 bits (or stops).

Your stament is absolutely right, I did not use the right expresion. As you say the problem has to do with A/D Conversion and I guess it can not change without Canon going into patents issues with Sony.

Some people are also saying that canon has chosen to get good high iso instead of good base ISO, I do not think this is true. 

The S/N ratio on 5D mkIII vs D800 is the same on all ISOs as is Tonal Range; DR is the same at high ISO but at base ISO is far superior on the D800, color sensivity is superior on the D800 at all ISOs and that is with a much higher pixel count.

The S/N ratio on 6D vs D600 is superior on the D600 up to ISO 12.800; DR is way better o the D600 up to ISO 400, about the same up to ISO 3200 and better on the 6D from that on, color sensivity is superior on the D600
6D is superior at ISO 25.600

And if you compare the 7d vs NEX-7 the 24mpx sony sensor is better at everything despite of the higher pixel count, specialy at DR and color sensivity.

So, in my opinion Canon sensors are way behind. OK, if you need best possible output at ISO 25.600 then get a 1DX or a D4, again the nikon will have best base ISO


If canon used a similar A/D conversion as Sony it would probably have the best sensors, or at least on par; but this will not hapen until they find a way of doing so without going into patent issues with Sony

All this started because it´s become normal for canon users to refer to DXOmark results as false; for camera reviews there are many different sites, but for sensor readings DXOmark is the only one I trust.

Canon just needs to change their AFE (analog front end) methodology to something a bit more optimal for the job if they want to get the low signal level performance that the other guys have.  FWIW:  Canon also has patents covering distributed ADC architectures so I don’t think that the patents are the problem (although I once held that view).  I believe that they will be driven by pure economics to integrate the ADC at some point since that thing is not cheap and when you couple that with the fact that the architecture is prone to be noisier, I don’t see any way around it – the only question is when.   
Title: Re: Canon EOS 6D Rating by DXOMark
Post by: roguewave on December 15, 2012, 12:57:41 PM
Not all Canon users.  But again, while their Measurements are useful, their Scores are not, because they are biased (only considering base ISO for some parameters) and not fully disclosed (weighted formulae but what weightings?).

Bill Claff's data are also quite good (and mirror DxO in many regards, but give some additional insights - worth a look if you haven't seen them.

I agree that DXOmark overall score does not tell the whole truth. In fact, no single number can do that, because no matter what formula / weights are choosen, somebody's priorities are going to be different.

However, the individual Measurements also show that for the most part (high iso being the exception), Nikon's sensor is superior.  Considering that D700 outperforms 6D on almost every spec besides the sensor - autofocus, fps, viewfinder coverage, dual card slots - it's clear which one is the better camera.