Re: Which Polarizer?
- From: "AaronW" <bj286@xxxxxxx>
- Date: 30 Jul 2006 18:26:28 -0700
Fred Anonymous wrote:
"AaronW" <bj286@xxxxxxx> wrote in message
news:1154220216.398429.202810@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Roger wrote:Anyone else posted to say that a linear polariser is a bad idea with an
I have a Canon XT with a Sigma DC 18-200mm 1:3.5-6.3 lens, so obviously
I'm not a Pro!
However I'm trying to decide on a circular polarizer filter
A linear polarizer is better.
for enhancing sky colors and minimizing reflections.
What I like most about polarizer is to enhance the color of grass,
flowers, and trees, ...
I hear that circular filters can knock 2 f-stops off a lens. Since I
already have a slow lens,
This can be a problem.
would a more expensive filter take less of a
toll than a cheap one?
No.
What are the considerations? Any recommendations?
Just get a cheap polarizer, to see whether you like the effect. If you
want a better one later, maybe with a better lens, get a multicoated
linear polarizer.
autofocus / TTL metering body?
AFAIK, such bodies use beam splitters and so have to be used with circular
polarisers.
The beam splitter is partially polarizing. That's why a linear
polarizer might interfere. But the AE metering is affected at most
about 1 stop. Since the meter is not perfect anyway, I might want that
1 stop exposure bracketing. And under certain circumstances (color,
angle, ...), circular polarizer will have exact the same AE problem as
linear polarizer.
For AF, the differences between circular and linear polarizer is very
little.
And because of the partially polarizing beam splitter, with a circular
polarizer, sometimes the color effect I see in the viewfinder is
different from that the sensor records when the mirror gets out of the
way. I noticed this problem with circular polarizer and switched to
linear polarizer.
http://digitcamera.tripod.com/#slr
.
- Follow-Ups:
- Re: Which Polarizer?
- From: David Littlewood
- Re: Which Polarizer?
- References:
- Which Polarizer?
- From: Roger
- Re: Which Polarizer?
- From: AaronW
- Re: Which Polarizer?
- From: Fred Anonymous
- Which Polarizer?
- Prev by Date: Re: Sony Alpha DSLR-A100K is rated 7.5/10 on CNET
- Next by Date: Re: Got my Nikon back - still broken.
- Previous by thread: Re: Which Polarizer?
- Next by thread: Re: Which Polarizer?
- Index(es):
Relevant Pages
|
