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Lensrentals | all galleries >> photogeek_contest >> 3-d_rendering_of_a_2-d_test_chart > AFchart2.JPG
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AFchart2.JPG
10-Sep-2009

AFchart2.JPG

Canon PowerShot A590 IS
1/60s f/3.2 at 7.9mm iso200 full exif

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Lensrentals03-Nov-2013 16:41
I bought a Tokina 11-16mm f/2.8 lens back in 2009. I had AF issues with the lens on my D80. My attempts to do any sort of focus test with a printed focus chart were futile because the charts are so small with a UWA lens.

So I printed a 3' focus chart on the plotter at work. The attached photos show the setup of the test using the 3' focus chart as well as an image which demonstrates the focus error I was chasing at the time.

Here's a link to where I posted the complete results of my focus test: http://zemlinphoto.com/misc/Tokina%2011-16%20Focus%20Tests/

I sent this test info and the lens to Tokina - they repaired the lens under warranty and I've been happy with it since.
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