by ʇolɐǝz ǝɥʇ qoq

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I have a Kodak z990 Max digital camera and the filter size is not noted on the lens front and not mentioned in the documentation. I figure it is probably in the range of 50-52mm. Can you help? Kodak online help is no help!!

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Kodak does not specify a thread-size but have you considered a ruler? It's generally good to give unambiguous answers! – Itai Dec 3 '12 at 20:36
In this camera's case, though, having a ruler plus knowing the common filter sizes would give a wrong answer. – Imre Dec 4 '12 at 7:45

The lens barrel of Z990 should have a 48.5 mm thread. This is not a standard filter size, but looks like some people have succeeded in modifying 49mm filters to fit by filing the thread slightly smaller.

Another option is to use a filter adapter tube, but it seems very likely that the tube will black out corners and edges on shorter focal lengths.

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How about using a 48mm filter and give the threads a once around wrap with plumbers tape and trim off the excess? – Alan Turner Dec 3 '12 at 23:43
Nice idea, if you can find such a filter - 48mm isn't a common filter size either. Closest commons sizes are 46mm and 49mm. Make sure the tape isn't self-expanding or sticky on the outside, which would get the filter stuck. – Imre Dec 4 '12 at 6:53

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