Which Filter for my 24-70mm L Lens?

I want to buy the B+W MRC Circular Polarizer 77mm but whats the better one SL or DH ? and what does that mean .. please help have to order tonight as only got 4 days now Thanks..

http://hvstar.net …er+77&btnSearch​=GO&Page=1

I have the B+W MRC on my 24-70 (and on my other lenses too), and I'm very happy with it.

Laurent.

tunin wrote in post #6042812
http://hvstar.net …er+77&btnSearch​=GO&Page=1

Now which one of both is recommended?

One's slim (no front threads, may be needed for some UWA lenses on some bodies). Other than that, it makes no difference.

Jon wrote in post #6043002
One's slim (no front threads, may be needed for some UWA lenses on some bodies). Other than that, it makes no difference.

What do you mean by that?
I have this one, and as you can see it has a front thread

http://www.bhphotovide​o.com …mm_Kaeseman_Cir​cular.html

It is a great filter though, and i am happy to use it only, but you know i can't use another filter on it then [I am talking about UWA lenses such us 16-35 on full frame or 10-22 on 1.6x bodies]

Tareq wrote in post #6043054
What do you mean by that?
I have this one, and as you can see it has a front thread

http://www.bhphotovide​o.com …mm_Kaeseman_Cir​cular.html

It is a great filter though, and i am happy to use it only, but you know i can't use another filter on it then [I am talking about UWA lenses such us 16-35 on full frame or 10-22 on 1.6x bodies]

If you'll follow the link you quoted, you'll notice that one of the two B+W MRC CPs listed is "SLIM"; the other isn't. The filter at the B+W link you provided is an "Extra Wide", which has a 77 mm rear thread and a 95 mm front thread. That's yet a third style of filter.

Jon wrote in post #6044470
If you'll follow the link you quoted, you'll notice that one of the two B+W MRC CPs listed is "SLIM"; the other isn't. The filter at the B+W link you provided is an "Extra Wide", which has a 77 mm rear thread and a 95 mm front thread. That's yet a third style of filter.

So if i will buy "Slim" version then it will be fine same as mine but no front thread or 95mm? just i want any CPL filter that is so thin or slim so i can use it for UWA lenses and i can use another filters with it.

AFAIK the thinnest B+W CPs with the same front and back thread diameter are the F-Pros. However, when you start stacking filters on any UWA lens you run the risk of vignetting, especially with a FF body. Can you stack a UV and a slim CP without vignetting? If not, you're looking for the unobtainable. And what is "too thick" varies from lens to lens and camera to camera. If you're using it on a 40D, I wouldn't expect any trouble. On a 5D or 1Ds3, you're going to need to be careful. Aperture matters too; the smaller the aperture the more obvious the vignetting will be.

Jon wrote in post #6044939
AFAIK the thinnest B+W CPs with the same front and back thread diameter are the F-Pros. However, when you start stacking filters on any UWA lens you run the risk of vignetting, especially with a FF body. Can you stack a UV and a slim CP without vignetting? If not, you're looking for the unobtainable. And what is "too thick" varies from lens to lens and camera to camera. If you're using it on a 40D, I wouldn't expect any trouble. On a 5D or 1Ds3, you're going to need to be careful. Aperture matters too; the smaller the aperture the more obvious the vignetting will be.

OK, i know that, and i am sure i can't avoid vignetting 100%, but at least i can get slightly vignetting with UWA on FF than horrible or alot of vignetting using normal filters that are not thin enough or designed for UWA, there are filters that if you use it only one filter you can see vignetting even on crop bodies or not UWA [above 20mm], for example, my B+W i don't see vignetting @16mm on 5D or 1Ds2, but my other normal CPL [HOYA not pro or HMC] i can see Vignetting, so my B+W is best for UWA than another normal filter, also my P-series GND i can see vignetting of the holder @16mm, but with my Z-pro and 4x5 the problem disapered, so i was looking for some filters to use together at the same time for lenses from 16mm and above, if i will see too much Vignetting then i will zoom up to 18 or 20 or even 22 if needed, and if so i may crop vignetting later if that will not affect the frame overall, just i bought many filters lately without thinking to get them right from beginning or just buy them to learn and now going with the right filters after i got UWA and FF.

Jon wrote in post #6044939
AFAIK the thinnest B+W CPs with the same front and back thread diameter are the F-Pros. However, when you start stacking filters on any UWA lens you run the risk of vignetting, especially with a FF body. Can you stack a UV and a slim CP without vignetting? If not, you're looking for the unobtainable. And what is "too thick" varies from lens to lens and camera to camera. If you're using it on a 40D, I wouldn't expect any trouble. On a 5D or 1Ds3, you're going to need to be careful. Aperture matters too; the smaller the aperture the more obvious the vignetting will be.

B+Ws are great filters. The one major problem I have with them is that their slim filters do not have front threads so will not accept the regular lens cap.

Hoya Pro1 is the as slim as the B+W slim, but has front threads. The one problem with them is that the "Digital Pro1" does not have as good a set of coatings as the original Pro1s (glad I bought mine when I did). Hoya is coming out with a new series "HD" with "new improved" coatings. I do not know the details and if they are as slim as the Pro1s. If interested, you can call these guys http://2filter.com/hoy​a/hoya_hd_filters.html

One other thing, which I had never noticed until I started playing with building a Variable ND filter. I used a set of Hoya CP/LPs and B+W CP/LPs. The B+Ws...in any config (just B+W or mixed with Hoya)...produced a blue cast that the Hoyas did not. (I returned the B+Ws).