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Messages - East Wind Photography

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1
EOS Bodies / Re: Exmor vs DualISO
« on: August 17, 2014, 05:27:04 PM »
Nice work! Essentially, Magic Lantern is able to recover closer to the 'sensor DR' - by mitigating the effects of downstream read noise probably introduced en route to the off-imaging-chip ADC in Canon architectures.

The extra 0.8EV 'highlight headroom' (or sorts) is interesting. Makes me wonder if something similar is going on with the Nikon D810 & the 36MP sensor in there. DxO data suggest they're able to map a higher signal off the imaging chip to the same Raw value at ISO 64 -- essentially like extending the effective full-well capacity of pixels at this ISO.

I guess the concept is that lower ISOs give more detail (bits per stop) in the highlights and higher ISO's more bits per stop in the shadows (sacrificing highlights for more shadow detail).  Therefore it would seem correct that at ISO 64 you could extend the DR in the highlight end a bit more than Canon's ISO 100.  Your quality of signal would determine what you get in the shadows.

Dual ISO just uses the best of both ISO's beneficial range and leaves the overlapped ranges untouched.

That brings up an interesting point though.  Dual-ISO doesn't really yield lower resolution images.  Only the highlights and shadows are half resolution and it's difficult to notice that based on how our eyes work.  The rest of the image where the high and low ISO overlaps is essentially untouched and full resolution of your primary ISO.  The wider the difference in ISO, the less overlap and therefore more potential to have your image de-res'd.

If you are shooting in daylight and want to recover shadows, use a high ISO of say 800 and a recovery ISO of 100.  If you are shooting in low light and want to play around with HDR in that realm, you should increase your recovery ISO.  I haven't tried low light HDR but it seems conceivable you could get better results than without Dual-ISO.  Say using ISO 6400 and a recovery ISO of 800 or 1600.  I'll have to play with that and see if there are any real benefits.



2
EOS Bodies / Re: Exmor vs DualISO
« on: August 17, 2014, 05:09:17 PM »
Very nice article, lots of effort to do that, most appreciated

Can these results be extrapolated to a 7D? I don't mean would a 7D be the same as these examples but would it have a similar ratio of improvement?

If so and this is all software based, makes me wonder when the (20.2MP guess) 7D2 makes an appearance and shows a similar improvement we will all be shouting praise be!!! and all 7D owners clamoring for an official software update  ;D

Well if there is a marked improvement it will be easy enough to test how it was/wasn't done, just find a tree  ;D

Dual-ISO works on every camera that ML supports (nightly builds only) including the 7D.  However just note that you cannot push the ISO on the 7D much more than 800, even with Dual-ISO, or it really starts to fall apart.

I even use Dual ISO on my EOS-M!!!

3
EOS Bodies / Re: Exmor vs DualISO
« on: August 17, 2014, 05:05:59 PM »
Really surprised this topic hasn't generated more interest.

Doesn't this show in real world terms just how easy, without changing any sensor tech, it would be for Canon to improve one of the most complained about aspects of their current sensor design?

What makes you think they haven't used this in the 1DX?  ;)

4
EOS Bodies / Re: Exmor vs DualISO
« on: August 17, 2014, 05:04:59 PM »
I've been using ML for quite a while now and use Dual ISO more than I really care to admit.  However there is another round of tests you need to do.  That is to use ISO 100 as your secondary or recovery ISO and 800 or 3200 as your primary.

Theoretically the results should be similar but there are reports of differences.  I assume that it has to do with the number of bits recorded in the lighter part of the DR and less so in the shadows.

I started out using Dual-ISO with a high recovery ISO and discovered that I could not get the shutter speeds I needed for sports or even birds in flight.  So I switched to shooting at ISO 800-1600 and recovering to ISO 100.


5
EOS Bodies / Re: 5D3 No Longer in Production
« on: August 17, 2014, 10:59:45 AM »
Best Buy 'discontinued' the 5DII at least three times before the 5DIII was announced (and Canon didn't discontinue the 5DII until well after the launch of the 5DIII).

So I'd say this means nothing.

Yes i think what it indicates is "chest guy" is discontinuing it because of poor sales.  They will order one if a customer wants it.

6
Canon General / Re: A Rundown of EOS 7D Mark II Information
« on: August 16, 2014, 11:37:59 PM »
I can't imagine Canon doesn't read to some degree forums like this  one especially. If they don't then shame on them. The people here are the 80/20 rule. The 20% of their market that comprises 80% of the base avid user. I would like to believe that Canon is wise enough to know how to produce a camera properly for the given target market. With a 2000-2500 body, they should darn sure know what the criteria are. And I believe folks like me and jrista are a big chuck of that market. Give the pros a reason to keep those white lenses on the sidelines of Saints games and whatnot. If Canon gets too over zealous with pop culture features, the artists out there will continue their outward migration. 

The 5D3 was a killer piece. I expect the 7DX to keep within that pattern and deliver strong fundamentals that will be a harbinger of the next gen FF pro bodies. They need a Sony/Nikon wrecker. If there is any wisdom left at Canon, that's precisely what they plan to deliver through 2015

A sony/nikon killer?  Canon already has the market share.  No, what they need is a 7D replacement in between the 5d3 and 1dx that will fulfill the gap lost when the 1Div was discontinued.  No matter what the 7dx has spec wise you can be certain it will be much better than the old 7d.  How much better we will have to wait and see.

Canon already has enough consumer cameras and marketing this to appeal to consumers would just be bad marketing.



7
Canon General / Re: A Rundown of EOS 7D Mark II Information
« on: August 16, 2014, 11:24:17 PM »
I really don't see the benefits of adding a touch screen. I prefer the tactile feedback from a button or a dial. Would a touch screen still work flawlessly on a cold winter day when it's snowing and the gloves are on? Would it work if I was out shooting in the rain?

if you were out shooting in the rain th touch screen would be the first to die.

8
Lenses / Re: Canon EF 1200mm f/5.6L For Sale
« on: August 16, 2014, 03:32:01 PM »
I wonder how many royals were photographed with this in private locations???

9
Canon General / Re: A Rundown of EOS 7D Mark II Information
« on: August 15, 2014, 11:32:42 PM »
No wifi or touch screen? Bummer. All future canon prosumer cameras should have BOTH wifi and touch screens IMHO.

I never liked Canon's wifi implementation.  I have had great success using an Eye-Fi card when I need that capability.  I dont think that built in wifi would be a deal breaker since it can be added later.

Touch screens are very gimmickee on a camera.  I've tried to get used to it on the M and while I can see that it makes sense for some things, I find it cumbersome to change settings and need to take my eye's off the subject and dink around with the camera.  I prefer to change most of the important settings by feel or program the common ones into custom modes.

I would rather see them put the R&D dollars into better IQ and better AF capability than consumer features like touch screens and wifi that runs the battery down even faster.

10
Canon General / Re: A Rundown of EOS 7D Mark II Information
« on: August 15, 2014, 11:21:00 PM »
Quote
EOS-1 style top plate

No mode dial?
Darn it! You beat me to it! ;)

You cant get EOS1 style weather sealing with a mode dial.  All buttons underneath a continuous rubber film will seal it from rain and gorilla pee.  More to sway my decision toward this being closer to a 1DX than a 7D and hence a loftier price tag.


11
Canon General / Re: A Rundown of EOS 7D Mark II Information
« on: August 15, 2014, 09:57:37 AM »
Regardless, I expect Canon to drain my bank account just like they always do.  Something they are very very good at!

You think?

I'm still using my 10-year-old and 9-year-old Canon dSLRs because none of the updates since have been particularly interesting.  I have several friends with Canon dSLRs, and they are similar.  One is still using his 40D, one is still using his Rebel XT, one is still using his T3i.  I'm still using a 20D, 5D and a T2i at work.  I've watched every Canon release carefully in the last 10+ years.

Depends on what you shoot.  For those of us that shoot sports, wildlife, other fast action, then we would be missing out on a VASTLY improved AF system in the likes of 1DX and 5D3.  The 7D doesnt even come close to being able to track as well as the new systems can.  If you shoot landscapes, weddings, products, then all of that doesn't really matter.

I am honestly very tired of dealing with the 7D system which for what I need is really lacking.  I have found myself using my 5DIII and just dealing with the crop.  I cant afford to spend 5K on a wildlife trip and throw away half of my shots because the AF cant cut it.

I am envious of those like yourself that have been able to keep the old tech working for you.




12
Canon General / Re: A Rundown of EOS 7D Mark II Information
« on: August 15, 2014, 09:41:42 AM »
Regarding the 'EOS 1 build quality', that's carefully phrased.  It doesn't say '1DIV' or '1D X'.  It's technically correct to say the 5DIII has 'EOS 1 weather sealing', since Canon called it equivalent to the EOS 1N film body (but that's not up to the level of the 1D X).

So Canon only has one EOS-1 series camera in their lineup now.  If they say EOS-1 build quality it should be on "par" with the 1DX and not the 5DIII.

What makes you think Canon (officially) said, "EOS-1 build quality"?  Even if they did, 'EOS-1' is a generic statement, not a specific model designation.  If this turns out to be a $3999 EOS 1D Mark V, it'll have build quality equivalent to the 1D X.  If it's a 7D Mark II, it won't.

Canon hasn't said squat.  However that is the rumor, that it will have EOS1 build quality.  We can read into that a lot of things.

From CR:

"A good source tells us that the new camera will have EOS-1 build quality, which we expected."

Regardless, I expect Canon to drain my bank account just like they always do.  Something they are very very good at!


13
Canon General / Re: A Rundown of EOS 7D Mark II Information
« on: August 15, 2014, 09:38:29 AM »
I think that the 7D MK II (with those specs) will fill the gap that the 1D MK IV left. The 7D could not fill that gap and wasn't targeted for that. But the 7D MK II will outperform the 1D MK IV and is able to fille the gap. Those that are not able to afford the 7D MKII will go for 70D or the successor of the 70D. My personal believe is that this spec game of Canon is done to take photographers to the next higher performer camera as part of sales strategy. It happened at least with me going from 550D to 7D to 5D MKIII  ;D

If they price it too high, then a lot of people that have been waiting for it will go buy a 70D instead.

Sounds like an excellent marketing strategy to me.  ;)


14
Canon General / Re: A Rundown of EOS 7D Mark II Information
« on: August 15, 2014, 09:32:28 AM »
Regarding the 'EOS 1 build quality', that's carefully phrased.  It doesn't say '1DIV' or '1D X'.  It's technically correct to say the 5DIII has 'EOS 1 weather sealing', since Canon called it equivalent to the EOS 1N film body (but that's not up to the level of the 1D X).

So Canon only has one EOS-1 series camera in their lineup now.  If they say EOS-1 build quality it should be on "par" with the 1DX and not the 5DIII.

15
Canon General / Re: A Rundown of EOS 7D Mark II Information
« on: August 15, 2014, 09:30:12 AM »
man, if half of that spec list comes true, and the launch price is $2k or less, I'm going to have a hard time waiting for refurbs to show up...


With the few rumored specs here this may be top of the line camera with an APS-C sensor that will target semi-pro and pro. My expectation is that the price will be in the same league as the 5D MKIII at launch.

When it was launched, though, the original 7D was exactly that, was it not? And it was $1799? Not saying it couldn't be as much as the 5d3, just that I don't think it necessarily will. I'm certainly not counting on $2k, but I'll be disappointed if it's north of $2500. Time will tell!

A couple of things that have been leaked will likely send this camera into the 4K range:

EOS 1 build quality
EOS 1DX type features

Those two bits of info are far better than the 7D ever was...

I would argue that the 7D had similar build quality and features to the 1DIII, which is what was out at the time the 7D was announced.

No I dont agree that the 7D comes close to the 1DIII in build quality.  There are fundamental differences in many areas which separate the two.  Shutter and sealing are good examples. 

Much of my cost basis is based on the fact that Canon has nothing in the EOS 1 lineup now other than the 1DX.  There is a very large gap between the 7D and 1DX.  I wouldn't be surprised if it ends up being called the 1D mark V.


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