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My medium format digital journey - Three format comparison

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My medium format digital journey
raw images for download
Where do I stand now
The experience
Color Profiles
Resolution Tests
Real World Samples
Color rendition
Dynamic Range
Moiré & aliasing
DoF and diffraction
More real world images
Three format comparison
Diffractio series
The lenses
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Capture One or LR 4.4
Some comments on Phase One business model
The Ultimate Platform?
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Three format comparison


I have tried to compare three formats, P45+, Sony Alpha 99 (full frame) and Sony Alpha 77 (APS-C), the latter two are both 24MP and were used with the same lens. I composed with the Hassy and tried to make the other images have the same horisontal crop. The Hassy was probably at f/11 and the Sonys at f/8. The images are all scaled to P45+ width and the two crops shown are actual pixels.

Hassy on the left, Alpha 99 center and Alpha 77 to the right. The results are somewhat puzzling, I expected a greater advantage for the P45+ and I expected less difference between Alpha 99 and Alpha 77. Again this may illustrate that lab testing is more accurate than real world shooting. Note that although the Sony Alpha 99 image looks sharp, it does suffer from upsizing artifacts. This test was done using the Planar 80/2.8 and the Sony SAL 24-70/2.8 ZA on the Sonys. 







Last Updated on Thursday, 08 August 2013 12:38  

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