5d SR at ISO 2000

Going through my photos from my South Africa trip and I can across this one. There are several municipal game reserves in Pretoria
and we got there very late in the day. In order to get a reasonable exposure with the 100-400 I had to go to 2000 ISO and 1/50 both
obviously not optimum.

This is the jpeg with no noise reduction, the basic sharpening in lightroom (25) and a bit of vibrance. It's not a terrible shot
and I see very little noise in the shot. With the slow shutter speed I do see the tracks of bugs around the Zebra's head. All In all
I am pretty impressed.

It is hard to beat the versatility of the 5DSR/100-400II combo. Nice shot. I am not afraid to shoot at higher ISOs.

Just a little curious as to your choice of ISO, why 2000 over 1600 or 3200? Or were you using auto ISO in manual?

"had to go to 2000"? I am confused. I would guess this relatively new camera is at least as good at high-ISO as things like the 70D, 7D2, 5D3, 6D. I had a 70D, and still have a 6D and 1DIII. ISO 6400 is completely use-able on all of them. In good light, the 6D produces clean JPG files at 12,800. Not following the ISO 2000 limitation.

Bassat wrote in post #18002449
"had to go to 2000"? I am confused. I would guess this relatively new camera is at least as good at high-ISO as things like the 70D, 7D2, 5D3, 6D. I had a 70D, and still have a 6D and 1DIII. ISO 6400 is completely use-able on all of them. In good light, the 6D produces clean JPG files at 12,800. Not following the ISO 2000 limitation.

obviously, some people have different needs/demands when it comes to noise.

'clean' iso 12800 jpegs from the 6D is a pretty subjective thing. I've never seen it.

Bassat wrote in post #18002449
"had to go to 2000"? I am confused. I would guess this relatively new camera is at least as good at high-ISO as things like the 70D, 7D2, 5D3, 6D. I had a 70D, and still have a 6D and 1DIII. ISO 6400 is completely use-able on all of them. In good light, the 6D produces clean JPG files at 12,800. Not following the ISO 2000 limitation.

You're not comparing them correctly. The 5DSR is not a high iso camera. It is a high megapixel camera. Since it has more than twice the pixels of the 6D but they have to take up the same 35mm space it will suffer because the pixels are smaller. Where as the 6D has much much bigger pixels so it performs better at higher ISOs.

maverick75 wrote in post #18002538
You're not comparing them correctly. The 5DSR is not a high iso camera. It is a high megapixel camera. Since it has more than twice the pixels of the 6D but they have to take up the same 35mm space it will suffer because the pixels are smaller. Where as the 6D has much much bigger pixels so it performs better at higher ISOs.

Which begs the question: "Why does the 5DSR exist?" If I can get the same pixel DENSITY (and size and high-ISO noise) from a much less expensive 7D2, why would anyone choose a 5DSR? The 7DII would actually put more those pixels on target due to the crop factor.

Due to how close the 5DS/5DSR is to the ISO performance of the 7D2, as well as nearly identical pixel density, I think the allure of those cameras is that you can have your FF result, and when times call for it, you can crop out an APS-C result at a resulting high resolution without sporting 2 bodies. It is pretty much a FF/APS-C all wrapped up in one body, it is just lacking in burst rate.

TeamSpeed wrote in post #18002561
Due to how close the 5DS/5DSR is to the ISO performance of the 7D2, as well as nearly identical pixel density, I think the allure of those cameras is that you can have your FF result, and when times call for it, you can crop out an APS-C result at a resulting high resolution without sporting 2 bodies. It is pretty much a FF/APS-C all wrapped up in one body, it is just lacking in burst rate.

Yup - my 5DsR has left my 7D and 5D2 at home. I never really used high bursts anyway, so 5fps and nice AF are bonuses to the resolution...

TeamSpeed wrote in post #18002561
Due to how close the 5DS/5DSR is to the ISO performance of the 7D2, as well as nearly identical pixel density, I think the allure of those cameras is that you can have your FF result, and when times call for it, you can crop out an APS-C result at a resulting high resolution without sporting 2 bodies. It is pretty much a FF/APS-C all wrapped up in one body, it is just lacking in burst rate.

Ok, I concede the point about not needing two bodies. Hobbling your full-frame just to achieve use-able cropped results seems counter-productive at some point. As mentioned, keeping the ISO low avoids the worst of the sensors behavior. Which leads back to the 7D2, 80D, or the like, doesn't it?

The 5Dsr is a camera that seems to be geared for a studio. If you only shoot in a studio then you would probably just leave the ISO at 100 and never change it.

Matthew Patrick wrote in post #18002583
The 5Dsr is a camera that seems to be geared for a studio. If you only shoot in a studio then you would probably just leave the ISO at 100 and never change it.

I am no professional, but when I work in the studio (my dining room), I have little difficulty fielding an appropriate focal length lens. That means I do not have to crop, much if any at all, my final product. In the studio, what advantage do all of those pixels provide, if not the crop-ability mentioned above?

They provide very high resolution on par with a medium format back for a much lower price. It's nice for work that will be printed and good for work that will end up on a very large format like a billboard.

Copidosoma wrote in post #18002505
obviously, some people have different needs/demands when it comes to noise.

'clean' iso 12800 jpegs from the 6D is a pretty subjective thing. I've never seen it.

+1
I shoot with a 6D and ISO 12800 is not "clean"

Matthew Patrick wrote in post #18002604
They provide very high resolution on par with a medium format back for a much lower price. It's nice for work that will be printed and good for work that will end up on a very large format like a billboard.

On par with MF? The Pentax 645D is 40MP. The 5DSR is 50MP, on a sensor 1/3 the size. The MF camera has more than 3 times the surface area of Canon's full frame sensor. If sensor size matters, the 5DSR is not even in the same league as any MF body.