Tagged with difraction - Personal View Talks http://personal-view.com/talks/discussions/tagged/difraction/feed.rss Tue, 05 Nov 24 03:26:50 +0000 Tagged with difraction - Personal View Talks en-CA GH2 - Difraction test for the M.ZD 45mm F/1.8 - 100% Crops. http://personal-view.com/talks/discussion/2645/gh2-difraction-test-for-the-m.zd-45mm-f1.8-100-crops. Wed, 21 Mar 2012 15:02:19 +0000 duartix 2645@/talks/discussions When comparing neighboring apertures the effect it's not very apparent but usually comparing crops 2/3EV apart you will see a difference. Having said that, I can say I'm pretty confortable up to f/11-13 even though if you compare to f/9 you can spot a marginal difference. These are 100% crops. Had to shoot these at ISO640 because that was the needed amplification for F22@2fps. Shot on tripod with constant lighting. At very wide apertures (F/5.6 and faster) there is flickering from the lighting but it doesn't make a difference for this purpose.

BTW I also tested with a chart on the center and another on the corner but the diffraction settles in equally as expected, so I'm publishing this test where I zoomed in on the chart and it's easier to see the differences.

A zip file with all images is also here: http://www.mediafire.com/?hwotq64ixux4z9k

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