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02/27/2005 07:17:18 AM · #1 |
| I have noticed that you can use gel filters on some canon lens - what is a gel filter? |
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02/27/2005 07:45:00 AM · #2 |
Originally posted by agwright:
I have noticed that you can use gel filters on some canon lens - what is a gel filter? |
It's a thin gelatin filter, as opposed to being made out of glass. On the Canon lenses they usually come as rear inserts, as in the type being used on long telephotos where it would be highly expensive to make a glass filter for the front of the lens. Cokin also makes a gelatin filter system that will work with a variaty of lenses.
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02/27/2005 04:24:45 PM · #3 |
| Has anyone used these? How are they optically compared to a glass filter? Any degradation in image quality? I am looking into purchasing a Cokin system, but I have heard that glass filters produce better quality images. |
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02/27/2005 04:26:50 PM · #4 |
Actually there is less for the light to travel through. Canon wouldn't use them in $7000 lenses if they caused undue distortion.
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02/27/2005 04:31:01 PM · #5 |
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