January 25, 2015, 09:45:31 PM

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Messages - LetTheRightLensIn

Pages: [1] 2 3 ... 277
1
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: Today at 04:13:37 PM »
I just hope it's not just the 7D2 sensor scaled to FF as it sounds like. I'd rather have the same MP as the 5D3 and a lot more DR and even more fps and topq uality 4k video than some 7D2 scaled up 50MP sensor and low fps and poor video and poor DR.

Why's that? Canon has made clear that a high res sensor isn't designed for high sensitivity or high fps, can't have your cake and eat it!

First, I wasn't talking about high sensitivity, but more DR. But it's not like the D800/D810 and such are terrible when it comes to sensitivity, far from it.

And as for DR, who says you can't have both high DR and high MP? Why not? The D810 gives great DR and it has a lot more MP than the 5D3. More MP shouldn't make more DR tougher to get, if anything, provided you can fit the circuits in place still for column ADC and all it should help the DR a trace.

As for fps, yeah you can't expect 50MP to be as easily driven as lower MP (although you can be smart like Nikon and gives APS_H and APS-C modes with full reach and more fps.... and semi-have your cake and eat it too) and I was just saying if it came down to it I'd rather they focus on DR first and if I was forced to chose between 23MP and high DR and high fps or 50MP and low DR and low fps I'd take the former. Ideally I'd go for semi-high MP, high DR and decent fps (like not less than 6, but doesn't have to be more than 6; and it could be only for copped modes if he bump from semi-high MP to very high MP). I would'nt mind 50MP at 4fps and then 6-8fps for cropped mode and with high DR. I might like that best of all actually.

Quote
If it's the 7d2 design upscaled that's fine *if* the price is ok, much better than a "dream camera" for €6000+. If it's essentially the crop sensor on a larger die, all "reach advantage" reasons of crop become obsolete. If you've won the lottery and want the best possible iq, you'd better look at mf digital sensors outside Canon.

Maybe fine for some, but certainly not for me. I'd take the 36MP and high DR any day over 50MP and low DR from Canon. I'd even take 23MP and high DR over 50MP and low DR if I was forced.

Quote
As for poor dynamic range: For the a lot of people in the targeted audience (landscape and studio) ~11.5ev is fine, you only need higher dr if you cannot bracket and/or shoot movement. Otherwise higher dr is nice to have, but not essential - or there wouldn't be any Canon shooters left even now.

It is exactly the targeted audience for a high MP camera that probably MOST cares about high DR.

But now you are trying to have it both ways, oh the 7D2 doesn't really target landscape etc. so who needs high DR. And now oh the high MP doesn't really target a need for high DR either.


All I can say it that I, personally, absolutely will not buy the 50MP Canon unless it has really good DR (unless it offers truly top notch 4k video for a really low price and then I could maybe get that and then add a cheap used SOny for the DR, although by this time Sony might have an A7R II that also does 4k in which case I still wouldn't get this Canon and would just keep using 5D3 plus the Sony or move to Nikon if they make some D820 with nice 4k). I'll just add some sort of something Sony puts out or maybe start the switch to Nikon.

2
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: Today at 04:07:09 PM »
Thanks bluemoon,

I've seen the effect in the items previously mentioned but then I saw the comment that it doesn't occur in nature and so I went back to look at my waxwing shots and found this sample.  I believe I've had similar and worse on some other waxwing shots and didn't like it and wondered where it came from.  Never noticed it on other birds.  Curious bird me is I guess.

Jack

here is a clear case on a robin (and a lens used with a TC no less):
(click it or whatever you need to do to see it 1:1)
http://sunsetbayphotography4.zenfolio.com/img/s4/v63/p1143969646.jpg

3
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: Today at 04:03:28 PM »
...
But concerning clean shadows: Your wish is granted instantly, because the 1dx/6d sensors are a *big* leap from the 5d2. I recently shot with a 5d2 from a friend of mine and was stunned how much banding it produced after postprocessing operations that I do with the 6d raw files all the time.

The 5D3 was released after the 1DX so just because a camera is a "later release" from Canon means nothing. The problem was the 5D3's sensor is more like they took the 5D2 sensor and just put it back in the oven to reheat. Will  Canon do that again? Wait and see.

The MkIII is not too bad, really. I find it gives me about one more stop than the MkII and much,much less banding. Mind I shoot in MRAW/SRAW1 with both bodies so this includes the downsampling effect (~10.5 megapixels effectively). Yes, ~10 megapixels really is enough for my purposes.

MRAW/SRAW are not true raw and you lose more than just resolution, if you can, it's better to shoot RAW and downconvert to 10MP later if you must

4
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: Today at 03:57:02 PM »
Thanks all for filter explanation. I understand the concept of an anti-aliasing filter now. Still a bit puzzled about the low pass filter. Several have said the low pass filter is an anti-aliasing filter - but if it passes low frequencies and not high ones, how does that help -

Because it has filtered out all the frequencies that are greater than the frequency at which the sensor can properly capture without error. Here it has sort of smeared them around to produce a lower frequency averaged mush. (but putting it that way makes it sound bad, but it's good)

5
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: Today at 03:53:52 PM »
Most types of digital Anti-Aliasing (Multi-Sampling or Super-Sampling) only appily the effect where it's needed, and can even bring out detail in a digitally rendered image that would not have been there otherwise. It maintains sharpness while fixing certain problems.
The AA filter on a camera would be comparable to a post processing AA filter, like FXAA, which simply blends every pixel on the screen with its neighbour, which eliminates both aliasing and crisp edges.

Sort of but multi-sampling covers the entire scene so it does it's thing everywhere, but the effects are obviously more noticeable on some parts of some images than on others (unless they did some targeting to located areas of harshest transition and only multi-sample those regions).


6
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: Today at 03:45:59 PM »
So I guess my question would be why would there be two versions what are the advantages of each I confuse easily Thank you
If the objects in focus in the image NOT have straight lines, and has NO repetitive geometric shapes, the AA filter is not required.

That's not true (unless you go to the extreme case where the image is nothing but 100% solid colors and very smooth gradients with no real details), although it does make it tougher for the eye to instantly notice the bad effects if the image doesn't have what you mention.


7
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: Today at 03:43:48 PM »
Will this be the first time Canon comes with two versions? I so doubt this….

Not at all, they've done such a thing even going way back. Look at the 20D/20Da for one (the latter with the sensor filter altered to allow for much better IR performance).

8
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: Today at 03:41:50 PM »
I just hope it's not just the 7D2 sensor scaled to FF as it sounds like.

I'd rather have the same MP as the 5D3 and a lot more DR and even more fps and topq uality 4k video than some 7D2 scaled up 50MP sensor and low fps and poor video and poor DR.

9
Third Party Manufacturers / Re: Sigma 24-105 f/4 DG OS Discontinued
« on: January 22, 2015, 02:03:09 PM »
When Sigma introduced this lens I figured it would need to be optically excellent to differentiate itself from the very good and inexpensive Canon L options (24-70/4 and older 24-105/4).  According to the reviews, it was only slightly better then the 24-105L and similar optically to the 24-70/4L. 

Actually worse than the 24-70 f/4 IS if you are thinking stopped down 24mm-35mm landscapes or stopped down 70mm landscapes. The 24-70 f/4 IS definitely delivers better there.

Also, the sigma was HUGE for f/4! I mean it's not only far larger and heavier than the 24-105L it is even larger and heavier than the 24-70 f/2.8 II! And almost insanelly larger and heavier than the ultra light and compact 24-70 f/4 IS.

10
EOS Bodies / Re: Global Shutter Coming to Canon DSLRs? [CR1]
« on: January 22, 2015, 01:58:23 PM »
What's the point of having 30fps when you have video shot at 30fps?  Doesn't the 1DC cover this?  Or is this basically what the mirrorless cameras have, just faster? they have very fast frame bursts..  slightly confused?

Various points:

18+MP is a LOT more detail (with a LOT more reach for sports and wildlife too) captured than 2MP or 8MP.

As far as compression and RAW and so forth, you could of course allow those all as video options too so nothing gained there per se.

The big thing is, aside from the detail and reach, that none of the DSLR have global shutter so you get issues that are not acceptable from stills from video in too many important scenarios.

The 1DC definitely does do anything this would at all because: no RAW video so you'd be stuck with essentially in camera processed 8bit JPG images for stills! it applies compression, no lossless modes. 8MP is simply a lot less detail 18+ MP, especially after the compression.

11
Third Party Manufacturers / Re: Sigma 24-105 f/4 DG OS Discontinued
« on: January 22, 2015, 01:03:05 AM »
Not surprised.

The 24-70 f/4 IS is better stopped down for landscapes and FAR smaller and lighter and barely cost more.

The 24-105L real world price fell to much less than this sigma.

The Tamron 24-70 VC was the same size and weight but offer f/2.8 and probably a bit better IQ, although for a few hundreds more.

The 24-70 II has much better IQ and is a trace smaller and lighter! despite having f/2.8 (although no IS and costing a lot more)

The first two made it not make too much sense for Canon users IMO and the last two just made it even more clear IMO.

12
Software & Accessories / Re: What monitor????
« on: January 21, 2015, 08:18:36 PM »
How is the user experience with the UHD displays?  As far as lag and refresh rate.  I read some articles last year that a lot of computers would choke on all the data, needing special cords, GPU, etc.  Didn't know if that's still applicable or if things have changed.

I've got a pretty good desktop at home (Haswell 4770k, 16gb, SSD, etc), no GPU but I'd get one.  I just want to make sure that I can still quickly sort through photos in LR and quickly kick them to PS.  The higher resolution just isn't worth it if it slows me down.

Any of you have the P2715Q?

I have i7 3770, 32GB, W7 64bit, GTX670 and it runs perfectly fine. Heck, even most of my games actually manage 30fps+ even at 4k.

Most Windows boxes that can drive 4k, can do so at full 60Hz (a few might only have HDMI/DVI out and those would be stuck at 30Hz unless you got a new card, but you can find pretty cheap cards that have DisplayPort 1.2 these days (they might not run stuff like games well at 4k at all though)).

A number of MACs are locked into 30Hz only.


13
EOS Bodies / Re: Canon EOS Rebel 750D Spec List [CR1]
« on: January 21, 2015, 08:13:40 PM »

People who buy the Rebels don't know anything about cameras, they buy because it has a logo the recognize on the front. It is just like those idiots who line up to buy the first iPhone the day it is released. They are clueless about the hardware, they buy the logo.

Maybe with some, but not with many. I've known many people who know a a lot of cameras and photography who purchased a Rebel. Camera gear is expensive and not everyone can afford a 5D3. And that really comes into play when you talk about HS, college and grad students. I mean there are plenty of those who have 5D3 and 1DX, but a lot have Rebels too.

14
EOS Bodies / Re: Canon EOS Rebel 750D Spec List [CR1]
« on: January 21, 2015, 08:09:15 PM »
Quote
And why a new 24.2 MP sensor for this and not the 7D2?
Is this maybe a new sensor that matches Exmor?
One could hope. Although poor 7D2.

Why poor 7D2? This is a totally different approach. The 1DX has even less pixels than the 7D2 and I would always, ever and easily take the 1DX over everything with more pixels... especially if it's APS-C, only. The 7DM2 is a quick sportscamera with everything optimzed towards speed. On sport-cars you even pay a few grands more if you have lesser weight. There is no need to have 6 seats in a Porsche. So, the APS-C will satisfy the ones who need the pixels. The 7D2 has a whole unique point in the line for a quick response and Autofocus on par with the pro-Models.

Are we again on the stupid "Megapixelomania"? Hope not.

No, see the part I just bolded above.

15
EOS Bodies / Re: Canon EOS Rebel 750D Spec List [CR1]
« on: January 21, 2015, 05:52:15 PM »
"HDR movie"

How?

And why a new 24.2 MP sensor for this and not the 7D2?
Is this maybe a new sensor that matches Exmor?
One could hope. Although poor 7D2.

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