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Dichroic/Microscope Florescence Filters

Started Apr 27, 2019 | Discussions thread
OP SmoothOperator Regular Member • Posts: 386
Re: Dichroic/Microscope Florescence Filters

No Filter

Dichroic Filter Straight

Dichroic Filter Tilted

I think it was a fairly successful experiment.  I was trying to take advantage of the AOI property of the filter as an effect to control the light entering a wide angle lens from different angles.

I this filter said 460-90-2.  I'm not sure what that means, I kind of figured it out by looking at the pictures in the ad.     I think it filters 460nm light at 90degrees.  I white balanced the images, and shifted the image up with a shift adapter, but if you look at the one with the straight dichroic filter, you can see the bluish light increase from bottom to top as compared to the unfiltered.  You can see the one with the tilted filter, has the yellowish cast at the top and more like the unfiltered image.

I wonder if anyone has designed a tilting filter or maybe a filter sock to prevent reflections.

I think certain polarizing filters are dichroic already.

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