In what formats can we find the polarizer?
We can find the polarizers in almost any format, square, round, insertable and even in a roll-up format to insert them in the lights, because yes, we can also polarize the lights and manage to control the brightness in the objects, this is used a lot in advertising or portrait.
The most common polarizer format is the round one, from its appearance in the analog world with the linear polarizer to the current circular polarizers, which are suitable to work with current cameras, the round format is the most common. As a novelty in this format we can find it with the magnetic property, a property of this type of filter that will allow us to work quickly and easily, KASE uses the polarizer in magnetic format in all its filter holders and also in round filters which can reach up to 112mm threads.
The square format is used to work with filter holders that, due to their construction or age, do not allow the use of another type of polarizer, and it may also be due to the type of lens (it does not accept filter holders). The most common size of this type of filter is 100x100 or 150x150.
In addition, KASE has a special polarizer that combines the possibility of being used in a filter holder as if it were a degraded filter, but at the same time it can be rotated. How is this done? Take a look at the following video.