Quote:
Originally Posted by pluto
I made a solar filter to use on a Canon 70-200mm for the 2012 TSE.
I bought a really cheap 58mm uv filter from ebay, then cut up a spare pair of eclipse glasses (available from the IIS store I believe) and some cardboard and taped it to the filter. Total about $5 I think.
Should make more sense in the pictures:
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That method is fine, but a word of warning:
You want to be 110% sure that there can be absolutely no light leakage between the cardboard blank and the metal filter ring, and also no chance of light leaking between the solar filter film and the cardboard blank. Even a very small amount of unfiltered sunlight could do permanent damage to your camera - or your eye! I'm a little bit concerned about the possibility of a fine gap between the cardboard blank and the metal filter ring in your photo - as long as the metal ring has a "landing" of a mm or two width to land the cardboard blank on, OK, but if not, you might want to consider fully sealing the perimeter with 100% opaque masking tape or similar.
I bought some solar film on eBay, and have successfully made solar filters for everything from my camera's longest telephoto lens, to a 76 mm reflector, 90 mm refractor, 130 mm reflector, and 200 mm SCT, using this method:
http://www.baader-planetarium.com/so...nleitung_e.htm