EOS Bodies - For Stills / Re: Full Frame and Bigger Pixels vs. APS-C and Smaller Pixels - The Reach War« on: August 11, 2014, 12:54:40 AM »
What camera out there, anywhere, offers any kind of significant advantage (and by that, I mean the 2+ stops DR improvement the Sony Exmor cameras get at ISO 100) in DR over any other camera, AT HIGH ISO? I mean, if such a thing exists...I'd like to know about it...but frankly, aside from the 1D X at ISO 12800, 25600, and 51200 (which is actually less than a 2-stop difference compared to any other camera), I don't think it does.
The goal posts seem to be shifting. The discussion above was about dynamic range in general for wildlife. Not specific brands.
I think developing this tech is just as important (regardless of who develops it at higher ISO's) as IS and other improvements within the context of wildlife photography.
Well, DR discussions usually involve just two or three specific brands, and the tone of the conversation is always the same. I guess I assumed, apologies.
However, you handily skipped past the FAR more important part of the post you quoted. I think it's an important discussion, and I believe your answers are important, because fundamentally, at high ISO, the available dynamic range is ultimately bound by physics, not technology. So, if you don't mind:
We disagree here. It's as simple as that. I could point you to my own work, at http://jonrista.com (since you insist I make the case myself), as well as the work of numerous professional bird and wildlife photographers who have been using Canon gear for years, and never seem to complain about the lack of DR at the very high ISO settings they use. Not only that, their work is phenomenal.
You have to understand, unless you are talking about shooting wildlife at ISO 100 and 200, there is very little difference in DR at higher ISO settings, with the exception of the 1D X (which has a good stop and a half ADVANTAGE at VERY high ISO settings.) Did you miss my post where I shared the DR numbers from sensorgen for the D810, D800, 5D III, and 1D X? I thought that would have put the issue to rest. Are you talking about wildlife photography shot at ISO 100 or 200, or are we talking about your crepuscular light wildlife photography, at ISO 12800?
Could you answer the questions posed? Are you shooting wildlife at ISO 100 and 200 on a regular basis? If so, how do you reconcile that with your prior comments about crepuscular light and ISO 12800? Is there a camera out there that gets 14 stops of DR at ISO 12800? Is there a camera out there that gets more than 10 stops of DR at ISO 12800?
At high ISO, with the exception of one or two VERY expensive cameras, there is little to no difference in dynamic range! It doesn't matter if your using a D810, an A7r, a or a 5D III. There is less than a stop difference between the lot at ISO 12800. They are all full frame cameras, and in a normalized context, they will all perform roughly the same in crepuscular light for wildlife. You can eek a bit more performance out of a 1D X or a D4, but were still very far from the 2+ stop advantage an Exmor has over most other sensors at ISO 100.
If high ISO DR is critical to your shooting style, I still think Canon has the advantage because of ML. I found the thread that discusses their high ISO DR improvements (which, on the 6D, bring you to 1D X/D4 levels of DR):
According to this thread, the high ISO DR tweak does NOT use the dual ISO technique that reduces vertical resolution...it uses a tweak of the downstream amplifier to avoid clipping the signal, thereby preserving about 1/2 a stop additional DR at all ISO levels.