Filter advice

[Noel Evans]

A circular polarizer is just that.. you can move the end of it to determine how much reflection you want in something or how blue the sky is.. you cannot move that if another filter is on top of that..

You also lose 1.5 to 2 stiops of light using a polarizer so I would not want to add to that as well. A UV filter is redundant on a polarizer. The polarizer will also get rid of some haze.

Yes have to admit I get great results with my cokin circular polariser on the end of my letus.

 

[n8ture]

A circular polarizer is just that.. you can move the end of it to determine how much reflection you want in something or how blue the sky is.. you cannot move that if another filter is on top of that..
.

Why can't you? Back in my still days I'd slap on another round filter in front of my polarizer. The front of the polarizer would rotate by turning the filter in front of it.

I usually try not to use filters at all if I can avoid it. I'm not a big fan of adding more glass that can degrade the image.

When I used to do allot of still photography, my big lenses had internal filter drawers that filters were incorporated in the design. If I didn't use any filters, I still had a piece of glass in the lens since it was designed to have that extra element in place.

Circular polarizer's are designed to work with auto focus cameras with beam splitters. A circular polarizer is just a linear polarizer followed by a quarter-wave plate set at 45 degrees to the axis of polarization.

You can vary the amount of polarization with any polarizer just by turning it. Even the big 4X4 ones will change if you turn them.

So when I talk about screw on polarizers, I usually say either screw on or round as a circular polarizer is a whole nother best.

I use 4X4 filters because I used to always put my finger on the lens of my PD150 when I'd reach into the lens shade to turn it.
Don;t want to be doing that with my HVX.

 

[lucey]

Sorry, i wanted to revive such a quality thread. Very good reading. I am just starting out and only have a 72mm UV as protection. I am curious, should i be thinking about buying a mix of 72mm and 82mm for wide angle or should one just get one size ? Just curious.

 

[kevob]

can the same effect be achieved in a nle as a colour filter? i wanted to try some filters but would prefer to have clean footage to play with