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Where to get test patterns?
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PostPosted: Sat Sep 18, 2010 9:08 pm    Post subject: Where to get test patterns? Reply with quote

I've got access to a large format printer, and I'm wondering if anyone has any good links on test patterns that I can download, then print out for doing lens testing.

Thanks.


PostPosted: Sat Sep 18, 2010 9:16 pm    Post subject: Reply with quote

I have printed the pdf found here.
It is good enough for most purposes.

I converted it to a 6000 x 9000 pixel JPG and sent it to KodacGallery.eu for printing.

Of course, there is much more to lens testing than a target. It easy to make many mistakes without ever noticing (e.g. wrong focusing, camera tilt etc).


PostPosted: Sat Sep 18, 2010 9:41 pm    Post subject: Reply with quote

Excellent free 3-D chart used by some Pentax engineers. Link right side half way down page at http://pentaxdslrs.blogspot.com/2008/06/part-1-autofocus-adjustment-for-pentax.html