Is lens testing at chart distance really an accurate measure?

Started 2 months ago | Discussions thread
Erik Kaffehr
Erik Kaffehr Veteran Member • Posts: 4,740
It may depend on your needs...

I don't think charts are useful for testing. To begin with, they need to be flat and well aligned to camera sensor.

If you want to check out a lens, I would recommend Jim Kasson's Lens screening test:

If you want more quantitative testing, it may make some sense to replace Jim's 'Siemens star' with slanted wedges for MTF testing.

Best regards


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Erik Kaffehr
Magic uses to disappear in controlled experiments…

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