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

These sheets worked great! Near 100% light blocking turned 90 degrees sheet-to-sheet. Film was easy to peel off, since they gave pull tabs for this reason. Completely clear optical with film peeled off. Yes, there is the light reduction.. There better be if it is really polarized... Bad reviews seem to come from lack of understanding of what this is. The sheets are grey in color on their own. They are supposed to be. Look at the most expensive camera polarizers to see this... Product was shipped in flat cardboard. VERY slight curl seen on unpacking, nothing to stop the bus on...Really. Worked great for the experiments I am conducting now. Thx Amazon!

Excellent. Many other "polarizing sheets" you can buy do not go fully dark when you cross them, and instead go red/green depending on the angle. These sheets go very very dark when crossed, and are very even across all visible light with no red/green tint. I bought these for an ad-hoc polariscope for mineral identification and they work great!

Works great over your light source when used with polarized lens over camera for reducing glare.

Sold by RENIANUS and shipped from Amazon. - Damaged during shipping: Either the seller or Amazon did not package the sheets properly. The sheets were shipped in a bubble envelope with no carboard inserts to keep it protected. During shipment one of the 2 packages was stressed, so that all 3 sheets inside were pockmarked in two places. I was still able to use the sheets, but I was limited in how I could use them. - In the description it says that the material is GLASS. The sheets are plastic film, which is what I really expected. - At first I thought that the sheets were cloudy and didn't polarize, but I reread the description and realized I needed to peel off the protective film on each side. Then they worked well.

Received as described; what I was looking for -- polarizing film without adhesive.

When I removed product from box. It immediately rolled up. And dos not remain flat. Which is vital for what I use it for. My suspicion is that it was kept rolled up in a tube prior to shipping. Other than this. The product is excellent. I esp like the film that protects the sheets tell I need to use it. From scratches.

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.

Ho acquistato l'articolo per condurre semplici esperimenti scientifici con la luce polarizzata, e ho scelto questo, raccomandato anche da Amazon, per il prezzo e la dimensione dei fogli (un A4). Il pacco è arrivato integro e senza piegature, come lamentato da altri acquirenti. I fogli polarizzano linearmente nel senso del lato maggiore. Occorre ricordare di togliere lo strato di plastica di protezione! I polarizzatori funzionano benissimo. Sovrapponendone due a 90 gradi, bloccano quasi completamente la luce che li attraversa. Altri esperimenti divertenti sono osservare attraverso uno di essi lo schermo del PC: ruotando il foglio, si capirà che la luce emessa dallo schermo è polarizzata a 45 gradi. Oppure osservare un pezzo di plastica trasparente accartocciata: compariranno delle incredibili iridescenze. Nella foto che allego si vede l'astuccio trasparente di un DVD tenuto davanti allo schermo di un PC e osservato attraverso un polarizzatore. Alcune di queste cose si possono fare anche con le lenti dei normali occhiali tipo Polaroid, ma ovviamente con i fogli si ha la possibilità di tagliarli, sagomarli ecc. molto più comodamente. Devo ancora provare a utilizzarli davanti a una fonte di luce (oppure mettendolo davanti al cellulare, come un filtro simile per le reflex, per fotografare oggetti riducendo i fastidiosi riflessi. L'ho anche usato in uno strumento per verificare la polarizzazione di un cristallo di spato di Isanda.

This product packaging has to improve, it actually feels like a joke that someone can ship a flat sheet in a soft paper envelope and think it would arrive to buyers hands in perfect condition.

Nul

Fantástica. La utilicé para arreglar el proyector y funcionó perfectamente

Super für den Physikunterricht. Einfach zuzuschneiden und am besten rahmen (Eisstäbchen eignen sich sehr gut), dann sind sie auch stabil und gut zu halten.