And now a little high ISO comparison (may want to close your eyes if you are not a Sony fanboy)
- the E-ZPass on the left is at / near the clipping point (that is how exposure was set)
- this time +2EV (not +3,EV)
- +100 Shadows and -100 highlights
- 1:3 crops in LR
- this is really a high ISO DR test - you can see with the 5DSR, at 12,800, if you are exposing for your brightest highlight at clipping point, and then pushing shadows, at 12,800 you are running out of DR and there is really no data to push if you have a High DR scenario at high ISO
- this type of exposure technique works at low base ISOs but above 6400 ISO you run out of room very quickly
- interesting point, and with more graphs to come, is that for the properly exposed part of the image (in this case the white E-ZPass on the left) high ISOs are ok for noise
- at 12,800, remember that the 1DXII has half the pixels of the A7RII, they look pretty close
- at 25,600, this is where the 1DxII has its biggest hit to noise, up until 12,800 everything is increasing more linearly - 12,800 to 25,600 is a bigger hit - that said, if the heart of picture is similarly lit, without extreme differences, (unlike this picture), while there is a substantial increase in noise versus 12,600, some NR and a little PP, and you can get a decent image - just remember, you don't have a lot of DR at this ISO to work miracles
- at 51,200, the Sony holds up remarkably well - for B&W web images you could use this ISO
ISO 12,800
5DSR

1DXII

A7Rii

ISO 25,600
1DXII

A7Rii
https://flic.kr/p/HUkNHM
ISO 51,200
1DXII
https://flic.kr/p/HRhRpU
A7Rii
https://flic.kr/p/HtTeHE
Looks like we are splittin hairs here until we hit 51000 ISO....there are very darn close.
Pretty photo or more accurately perhaps to say a very nice photo of avery pretty bird!












