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Photography Q&A
Calibrating Lenses Questions
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<blockquote data-quote="Fred Kingston" data-source="post: 730131" data-attributes="member: 10742"><p>To add further to what Pauls says... With zooms you average... I use Focal... which uses an algorithm to test at various focal lengths then tests and uses an average of those focal lengths... In your example, I would test at 70, 100, 150, and 200 and see which way THAT lens needs to be adjusted and then settle on that number.</p><p></p><p>Another method assumes you have a pretty good portfolio taken with that lens. Lightroom (and I assume other programs/sources) let you search through YOUR images and find the focal length that most of your images have been taken at... and then test/adjust for that focal length...</p></blockquote><p></p>
[QUOTE="Fred Kingston, post: 730131, member: 10742"] To add further to what Pauls says... With zooms you average... I use Focal... which uses an algorithm to test at various focal lengths then tests and uses an average of those focal lengths... In your example, I would test at 70, 100, 150, and 200 and see which way THAT lens needs to be adjusted and then settle on that number. Another method assumes you have a pretty good portfolio taken with that lens. Lightroom (and I assume other programs/sources) let you search through YOUR images and find the focal length that most of your images have been taken at... and then test/adjust for that focal length... [/QUOTE]
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