Polarizer Issue - DPChallenge Forums

Canon EF 24-105mm f/4.0L IS

01/15/2006 10:57:20 PM · #1

I purchased a circular polarizer filter this weekend and when I started taking pictures this problem showed up in the corners when i would adjust the filter. Can someone explain to me why?

//www.dpchallenge.com/image.php?IMAGE_ID=281920

Message edited by author 2006-01-15 22:57:50.

Beetle

Canon EOS-5D Mark II

01/15/2006 11:02:07 PM · #2

Let me fix your link for you

cpanaioti

Canon EOS-40D

Canon EF 70-300mm f/4.5-5.6 DO IS USM

01/15/2006 11:02:45 PM · #3

Originally posted by pix-are:

That's called vignetting. Was the polarizer the only filter? What lens were you using? This will appear with wide angle lenses.

To try and avoid vignetting, a slim filter should be used. Slim filters don't protrude much from the end of the lens and are less likely to cause vignetting.

milo655321

Tokina AF 12-24mm f/4.0 AT-X Pro DX

01/15/2006 11:04:03 PM · #4

It's the filter itself. The rim is thicker than a regular UV filter. I get the same with my polarizer when I crank it back to 12mm on my 12-24mm. I just shoot at 14mm and over when I'm using the polarizer.

01/15/2006 11:04:53 PM · #5

yeah, i had this on top of a sky filter. btw, how do i insert the pic, not the link, in a post?

Canon EF 70-300mm f/4.5-5.6 DO IS USM

01/15/2006 11:05:13 PM · #6

should i remove all of the filters but the polarizer when i want to use it?

cpanaioti

Canon EOS-40D

01/15/2006 11:08:40 PM · #7

Originally posted by pix-are:

yeah, i had this on top of a sky filter. btw, how do i insert the pic, not the link, in a post?

Click on the button at the far right above the post box and just enter the image id (which is at the end of the URL for the pic).

Avoid stacking for two reasons:

1) to avoid vignetting on wide angle lenses
2) filters aren't necessarily the same quality glass as the lens so stacking could degrade the quality of the image

01/15/2006 11:10:14 PM · #8

Thanks. I really noticed a poorer quality photo this time around when I had the two filters connected.

btw, i'm reposting the picture just to check out your instructions

ignite

Canon EOS-500D Rebel T1i

Canon EF 50mm f/1.8 II

01/15/2006 11:24:27 PM · #9

I would also suggest not stacking your polarizer with any other filter. It degrades quality. You could also zoom just a little bit so that the filter does not show in the corners.

Another thing I want to point out is that the photograph is very nice, but the composition is not good. You have divided the photograph into two equal halves. You should have shown more foreground or more sky. Keeping the couple on the left side with more sky showing would have made this a superb image.