Here are compared the Canon 5D Mark III to its 5D Mark II predecessor at ISO 50 through ISO 25600, whole ISO values.
The lens was the Leica 90mm f/2 APO Summicron-R at ƒ/5.6, easy to use for Canon users by simply adding a lens adapter. However, it has quite a strong rearward focus shift at closer range, so some care must be taken at closer distances.
For this comparison, I increased my normal sharpening amount to 80 to really bring out the fine details possible.
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Since 2006, Diglloyd Advanced Photography is the authoritative review and reference for DSLRs and their lenses: Canon and Nikon primarily, but also Pentax and some medium format. Reviews of key DSLRs are included, but the primary focus is on lens performance. Also included is a wealth of technique and workflow approaches.
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