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-   -   What is a Linear Polarising Filter (https://forums.steves-digicams.com/add-lenses-49/what-linear-polarising-filter-3771/)

TonyG Oct 20, 2002 2:59 PM

What is a Linear Polarising Filter
 
Is that just another way of saying Polarising Filter or is it different?

gibsonpd3620 Oct 21, 2002 8:22 AM

Copied from Steve's Digicam Dictionary link. "Polarizer - A photographic filter for eliminating glare and reflections. Just like your polarized sunglasses get rid of annoying glare, the polarizer filter does the same for your digicam. However - there are 2 types, linear and circular. Linear is for film only, it screws up most auto focus systems on digicams. Therefore be sure you use a circular polarizer filter. It can also be used to darken skies.

sjms Oct 21, 2002 8:41 AM

the differences between the 2 types are in the mechanisms for polarizing light.

i started an explanation but i think this one is good enough:

http://lynnfarmerphoto.net/35MMBoard...olarizers.html

http://www.a1.nl/phomepag/markerink/pol_circ.htm

lg Oct 22, 2002 3:30 PM

sjms, that's a couple of excellent articles! Thanks for your answers to a question I have had for quite some time...


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