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Old Nov 7, 2005, 3:23 AM   #1
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I currently have a uv filter on my fz30. do i loose brightness or exposure using this type of filter. like can i use this inside and stil get the same results without it



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Old Nov 7, 2005, 3:44 AM   #2
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It depends. For every filter there associated a "Filter Factor":

http://photonotes.org/cgi-bin/entry.pl?id=Filterfactor

For example, Hoya and B+W publishes their filter factor values:

http://www.photofilter.com/hoya_factor.htm

http://www.schneideroptics.com/filte...&_warming/

Please notethese values are their results under certain predefined testing conditions and light of certain bands of wavelength,they may have variation in practical use.

Rudolf.
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Old Nov 18, 2005, 4:13 AM   #3
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The difference is so negligible, just fit and forget.
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Old Nov 18, 2005, 8:10 AM   #4
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The UV filter has essentially a 1x exposure factor. So just put it, shoot and forget. In any event, all (well, most anyway) metering is done through the lens, so any factor that does exist is automatically taken care of.

Declan
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