« on: October 19, 2012, 06:04:27 AM »
There are a lot of heated discussions about Canon versus SoNikon sensor DR performace, sensor technology, about DXO not measuring sensors correctlly in favour of Nikon etc.
So here is a simple DR stress test results for 1Dx shadow recovery limits for those who are interested:
I did these tests to see myself what is 1Dx is capable of.
Attached are 4 pictures (snapshots from LR4 screen by Win7 snipping tool):
1. 1Dx shot at ISO100 with EV = (-3 ) - showing 100% crop area shown below
2. Corrected with +3 EV in LR4, no shadow correction, no noise reduction applied
3. The same as #2 above with shadows raised to max 100%
4. The same as #3 above but with NR applied in LR with L=40, C=40.
Results are self explanatory - no further comments from me on this subject.
Despite for what we see here regarding 1Dx DR performance here my experience with 1Dx is very positive - almost perfect tool for low light sport and events shooting.
In daylight 1Dx images also look much cleaner and having more 3D look than 1DsM3 and 5DM2 that I used before (just my personal perception) and allow more image sharpening to be applied safely.
Also seems that 1Dx has a bit weaker anti-aliasing filter - with extreemly sharp 24-70 2.8L II I could see moire on some areas of ISO resolution chart where image elements (projected on sensor) become comparable in size with pixel size on camera sensor. I have not observed that with other lenses including very sharp 70-200 2.8L IS II