Image: Filter-optics-1
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Description: Various coloured and ND filters; photo by User:DrBob
Title: Filter-optics-1
Credit: DrBob (talk) (Uploads) Transferred from en.wikipedia by SreeBot
Author: DrBob at en.wikipedia
Usage Terms: Creative Commons Attribution-Share Alike 3.0 truetrue
License: CC-BY-SA-3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
Attribution Required?: Yes
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