Polarized Film Sheets 3 PCS 7.8 x11.8inches/20x30cm Polarizer Linear Polarizing Filter Non-Adhesive for Educational Physics Photography Lighting

I use these to photograph my oil paintings without glare. They work flawlessly for that purpose. There is a film on BOTH sides, once they are removed the sheets work well. This was the absolute best price around for these sheets and I'm very happy with their performance, I've now got glare free photos. I cut mine to fit into my led studio lights and in conjunction with my DSLR lens filter I can easily change the level of glare.

I needed a cheap way to get proper photos of an oil painting that has big brush strokes, therefore creating a lot of glare with any attempt to photograph it.Make sure your remove the film on both sides of the sheets.I then taped a sheet over my light source, and taped one over my camera lens (I cut it down to size for my phone). At first it didn't work, and then I realized that the sheet needed to be turned over. I switched it around and was able to take a MUCH better photo of the painting than I had been able to get thus far.It's a bit fiddly, but it did the job!

Be sure to remove the plastic film from both sides. At first I thought the polarizing filter was blurry because of being really low quality. Then I realized there is a plastic film on both sides (quite subtle). When the film is removed, the filter is crystal clear and works great.

This film does exactly what it should. Both sides are non adhesive which seems to be getting harder to find now. The only reason I gave it 4 stars instead of 5 is because even though it was shipped in a bubbled envelope, when it arrived all the sheets had small creases in them. I use them for photography so the creased part is unusable for me, but I also didn't need a sheet this large. Thankfully I could cut it down past the crease and they were still large enough to use. But they should put a little piece of cardboard or something in the package to keep this from happening.

I'm doing some photography lighting experiments with polarized light and needed these to polarized the light from my studio strobe and continuous lights. A polarizing lens will be used on the camera and it's adjustment should help me eliminate unwanted reflected light bouncing off shiny objects on my subjects. I'm setting up for this now.

This arrived in good condition, despite being shipped in only a bubble envelope. Has good extinction. BUT, and this is a big BUT, it curls up like a spring, forming a cylinder about 3 inches in diameter. Could not flatten it by weighting it down flat for a long period or by weighting it with heat for a long period. If you want this flat you will need to stick it to a rigid support.

I needed some reasonable linear polarizers to measure glare from LED headlamps. These work perfectly. I can use them with an SLR and light meter. I have to make a frame but that is simple. The 90 degree blockage is great for this price point. Remember to remove plastic covers.

Great for light lab.