Thursday, October 2, 2008

Lens calculators

Let’s be honest, most of us who put machine vision to work on factory floors are not optics specialists. We might grasp that a shorter focal length lens ‘sees’ a wider cone of view than a longer focal length, but that’s about the extent of our knowledge. So please, don’t ever ask us to work out what lens we need from first principles. (Personally, I go with a trial and error approach, which is OK if you have some spare lenses in your desk drawer.)

That’s why on-line lens calculators are so useful. So, as a public service, allow me to provide some links:

lens calculator

lens advisor

simple lens calculator

Lens calculator from Sentech

And if you know a better one, please tell me about it.

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