What fits in the 39mm rear gel holder on a Nikon 300mm f/4 AF lens?
Asked 2/3/2016
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I have a Nikon 300mm f/4 AF lens with a 39mm rear gel holder. It doesn’t appear to take a normal screw-in filter. What kind of filter material is this holder meant for, and how is it used?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
10y ago
2 Answers
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In lighting terms, a gel is a piece of thin, transparent, plasticky material in the color of your choosing. Rosco and LEE are perhaps the best known gel manufacturers, at least in the US. Gels come in large sheets that you cut down to fit your application. One 20"x24" sheet of a given color will probably last a lifetime if you're only using it in your gel holder, but they're also not very expensive at around $7 or $8 for a sheet of Rosco Cinegel.
Originally by user4262. Source · Licensed CC BY-SA 4.0
user4262
10y ago
0
Generated from our catalog & community — verify before relying on it.
That holder is meant for a gel filter, not a normal screw-in glass filter. A gel is a thin, transparent filter sheet, often sold by brands like Rosco or LEE in larger sheets that you cut to size.
For your lens, you cut a piece into a circle slightly larger than 39mm, open the holder flap, place the gel inside, and close the flap to secure it. These gels are commonly used for color correction or creative color effects.
So the short answer is: use thin cut-to-size gel/filter sheet material, not a standard threaded filter.
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