Light rays which are reflected become polarized. Polarizing filters are used to select which light rays enter your camera lens. They can remove unwanted reflections from non-metallic surfaces such as water or glass and also saturate colors providing better contrast. The effect can be seen through the viewfinder and changed by rotating the filter. The filter factor varies according to how the filter is rotated and its orientation to the sun. Filter factor is between 2.3 and 2.8 (approx. +1.3 stops).
Linear polarizers are used with most video and manual focus photo cameras. They are not recommended for auto-focus SLR cameras.
PLEASE NOTE: All auto-focus SLR and certain manual focus SLR cameras require circular polarizers. Consult your instruction manual.
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Comments about Hoya 43mm Linear Polarizer Glass Filter:
It definitely fit the 43mm thread on my Canon HV40 well. I haven't noticed any HUGE differences reflection-wise. Yet again, it's a cloudy day today. I'm not sure what spinning the ring on the filter does to the polarization, but I haven't seen too much change. Hopefully a sunnier day will come by, and I'll get to test it in real light. Until then, it makes a GREAT lens protector!
Pros
Cons
Best Uses
Comments about Hoya 43mm Linear Polarizer Glass Filter:
I bought the Hoya linear filter for my "B" camera, a canon HV40. I do a lot of outdoor filming. The footage in both SD and HD is very clear and the color I get with the filter is awesome. The footage is still really clear and without any quality loss that I can tell. I'm very happy with it.
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