Interesting Filter

[David]

http://www.surplusshed.com/pages/item/m2725.html

I picked one of these up and it arrived today. It's threaded to fit 49mm. The yellow glass is a pretty dark yellow and the image loses a bit of detail. I've tried it on a 28mm, 50mm, and 55mm lens. On the latter, the outer image corners are yellow only. On the 50mm, the center of the image is unaffected with a gentle gradient getting darker yellow to the edge. On the 28mm, the ring is clearly visible stopped down and there's some vignetting from the hood. This would probably work well down to about 35mm. Much beyond 55mm, there's be almost no reason to use it except that the filter is built into a pretty large lens hood that steps up to 52mm.

I'm definitely looking forward to getting the photos back. This filter looks like it could yield interesting results.

[philslizzy]

colour spot filter probably used for one off effects and b&w film