On Sharpness, ISO and Shutter Speed

Started Nov 29, 2013 | Discussions thread
rubank Senior Member • Posts: 1,081
Re: On Sharpness, ISO and Shutter Speed

Jack Hogan wrote:

If in the A7 and D610 there is really such a large difference in horizontal vs vertical captured resolution, is that an issue in practice? Or should we be preferring capturing in landscape vs portrait orientation to maximize, say, vertical detail in the center of an image? Many of us spend thousands of dollars on better lenses to typically gain less than the 20% difference shown.

It´s interesting (and surprising) to see that the vertical and horisontal readings has swapped places between the two cameras. I wonder what´s with this?

And then a question: does MTFmapper take readings from the "raw" RAW files or from processed files. If the latter, how are they processed?

Side note: I once downloaded the D800 RAW file from DPR, and developed it with my preferred settings in ACR; the result was quite different vs the DPR conversion (i.e. mine was much better), so I wouldn´t make too much of the "weak" D800 performance in DPR's comparison. That is at it should be, maybe, but should be remembered regarding whatever camera is tested.

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