Wide polarizer ??

[Raj]

This must have been discussed earlier. However search proved to be that useful ..
So please advise ...

I am going to purchase a polarizer for my 70-200 mm tomorrow. Its 77 mm dia. I plan to get 24-70 L shortly which also is 77 mm dia. The salesman told me that for 24-70 I need a wide/thin polarizer while ordinary one will do on sigma.
Purpose of thin seems to prevent vingetting but since 20D is not a full frame camera, is this really going to be useful ?

If thin is required for 24-70 & works on 70-200 than I will get thin one. I dont mind paying extra bucks as long as I dont have to carry multiple filters.

Cheers

[SkipD]

See this thread: http://photography-on-the.net/forum/showthread.php?t=74770

While you don't need a thin filter for the 24-70, the Hoya UV-PL-CIR Ultra would be an excellent choice. When you get your next lens, an ultra-wide such as the 16-35 (along with your new 1Ds MkII body :-) ), you will be glad you got the thinner filter.

[pierrot]

...but since 20D is not a full frame camera, is this really going to be useful ?
Hehe, you're asking the right question, and you guessed the answer is... "no".
Save some extra bucks for something else. Why not an additional gradual ND? ;)

[Bob_A]

I asked the same thing a week or so ago:

http://www.photography-on-the.net/forum/showthread.php?t=72660

According to Scott Berger, there is no need to go with the thin (slim) variety using a 24-70 on your 20D. I think the only time you would have to go that route is if you are typically stacking filters. Since I would only be using the CP, I saved some money and bought the "ordinary" one for my 24-70 2.8L. The most important thing is to make sure you buy a circular polarizing filter and not a linear one.

Bob

[kenyc]

I asked the same thing a week or so ago:

http://www.photography-on-the.net/forum/showthread.php?t=72660

According to Scott Berger, there is no need to go with the thin (slim) variety using a 24-70 on your 20D. I think the only time you would have to go that route is if you are typically stacking filters. Since I would only be using the CP, I saved some money and bought the "ordinary" one for my 24-70 2.8L.

Bob

Yes, I've got a normal polarizer on the 17-85 efs lense and it works fine unless I stacke it on top of the UV lens, then I get vignetting.

KAC