Quick Filter Test

Started Sep 20, 2008 | Discussions thread
Thom Hogan Forum Pro • Posts: 13,659
Re: Test Targets

Bmark wrote:

But it would probably be okay if I had used the traditional photo
test targets?

Actually, no. The point I and others have been trying to make about filters is that they produce what is called bounce-back flare. In order for this to become clearly evident, you need a high-contrast subject, preferably with a light source in it. Then you'll see ghosting and flare in ways you won't with the kinds of test subjects you're trying.

Nikon used to use flat glass on the front of their exotic telephotos for protective reasons, the same as people use UV and other filters for. They've moved to curved protective glass and nano coating the back side of the prime elements for a reason.

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Thom Hogan
author, Complete Guides to Nikon bodies (18 and counting)
http://www.bythom.com

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