K&F CONCEPT Linear Polarization Sheet Adhesive 300 * 200mm

Bought to change my digital watch display to negative. Comes with a adhesive backing and worked for what i needed

Excellent product, did exactly what it said it would, and cheap!

Very versatile and the optical properties absolutely work. However, as it is a polymer film that one applies like a smartphone screen protector, the physical properties are similar too; they're not fully scratch resistant and from other comments I have seen, not heat resistant either. How well it fits to your requirements, depends on one's craft skills.But for general use for when you need a filter as such, I have zero complaints.

This is a brilliant product as a whole but with one drawback that I found, it keeps peeling up off curved surfaces, I tried putting some on my flip up driving glasses but it didn't want to stay fixed, it kept bubbling up near the edges of the curves and I can't get it to stay fixed to the curve, and if you wear or at least know what glasses look like you'll understand what I mean, which is the only reason I'm giving 4 stars.

used a small piece of this to replace the polarizing filter on a vintage digital watch. Worked perfectly!

This product is polarized in such a way that you must look from the non sticky side to the sticky side for it to work . This means that you can use it looking at a computer screen but it is useless for using on a camera as the lense looks feom sticky to non sticky side

Totally stopped the reflection of the light in my glasses for my webcam

The adhesive only helps with alignment, but doesn’t actually stick to the light as it peels off. Had to use superglue to the corner to make it stick on, not getting a great finish

I used these on overhead projectors in a theatre performance. They created the effect just as I wanted and the quality of the film was good for my use.

Ich holte mir diese Folien, um auch mit meinem preiswerten USB-Mikroskop bessere Aufnahmen machen zu können. Auf dem Bild sieht man die Anwendung mit einer Petrischale, deren Hälften man zueinander verdrehen kann, um nur das Licht einzufangen, welches das Objekt durchlaufen hat; im Beispiel sind Fasern eines Taschentuchs zu sehen, ebenfalls ein Vergleichsbild mit normalem Licht. Wenig Aufwand, große Wirkung. Viele Grüße :-)!

Perfecto para quitar reflejos con otra lente para el móvil

Je l’ai installé avec une light pour gérer la lumière et ça fonctionne très bien !

Buon articolo, fa il suo dovere ed è perfetta per la luce che ho preso