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Rainbow spectrum filter in Bliss (2021)


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Well, the $12 holographic sheets from Edmund Optics have arrived! I had to sign a very serious statement that they would not be used for any military application, which took them about a week to approve ? We bought 2 types for testing - 12,700 Lines/Inch and 25,400 Lines/Inch. They are not labelled, but the first one is probably more subtle and the second one is completely crazy.

Good news: it is definitely possible to shoot through this stuff!  They add a bit of softness and contrast loss, but nothing critical, should be fine with sharp lenses. The effect is pretty hard to master - if there are bright light sources in the frame, they can create a mess. The most pleasing rainbow comes from hitting the lens at an angle by a flashlight. Only made some quick shots so far, hand-holding the sheets - still waiting for clear filters to arrive from the US, need to figure out yet how to stick the film on glass. Totally fun to experiment.

rainbow2.jpg

rainbow1.jpg

rainbow3.jpg

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