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Lens focusing test.
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Following some advice from Derek897, I had a look around the web at sites regarding lens focusing tests. I found the chart in the image on the Jeffrey Friedl’s Blog, the post is from 2007 but it still worked for me. :D :D see link below. I read the blog a few times and printed the chart a few times and then I took a few shots at various angles, the images below are the result and I can say with some confidence that my lens doesn’t have any focusing issues.
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Comments welcome.
Dave.
Hi Dave, glad to hear that it’s focusing spot on, the only problem now is that it’s probably your fault :)
At f6.3 it should be tack sharp, unless shutter speed was too slow, but at 1/800 it doesn’t seem to be the problem either. Is it possible that you delayed between getting focus lock and taking the shot ? Even fractionally? Can’t really think of any other reason.
Derek.
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