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Focus test - some fast lenses

photoSmart42

New member
We've been talking about a few fast lenses in other threads, and I said I'd run a more structured test of the focus characteristics for some of my fast lenses. Below are the results. All were shot wide open. I wanted to get an idea of the characteristics of the focal plane, drop-off, etc. so I could understand how to best use these lenses at wide open aperture. Hope they're helpful to others as well.

GH1; ISO200; 1/200 to 1/400 shutter; wide open aperture; natural window lighting; JPEGs as shot from camera w/ minimal PP

Target provided by Tim Jackson: Focus Test Chart v2.1

Panasonic 20/1.7


Computar 25/1.3


Canon FD 50/1.4


Canon FL 55/1.2


-Dragos
 
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