Originally posted by emr So, now that this thread is up again, how about a B&W circular-pol MRC that I could buy at a fairly good price? I searched the web and came by the descriptions Slim and Kaeseman, but this may be neither. However, being multi-coated and all this should probably be OK, right?
Even though I buy them and for what shoot, B+W Kaesemann filters are really over kill and the only filters I buy are CPL's and ND's anyway so it's not like I have more than a 5 or 6 filters total. What I do, generally is buy a filter for the largest lens I have, or will eventually have, then try out step-down rings with the filter on smaller lenses, check for any vignetting and if it's cool then I can use the same filter on more than one lens. That makes the price easier to live with. That is another reason I like the 'slim' versions, they help reduce the chance of vignetting.
As for the MRC vs. other options, they should be fine. In fact if you look at the Kenko filters I believe they are actually Hoya filters and might even use the same coatings once you figure out the models that compare.
But the best advice in the thread so far is to buy the best filter you can and go from there.
I actually had some filters for my Bigmos (Sigma 150-500mm) that were some brand-x filters and the CPL, the thing was darn good...the whole set of 4 (maybe 5 but I think it was 4) cost me around $30 on sale. I forget the brand but I was really surprised. I often wonder if some of the brand-x makers simply buy culls or over production runs from the actual glass maker at a big discount then badge them under their name. And sometimes they get really great "culls" so we buyers luck out...it is often that way for things like video cards. Often the company mkaing the cards for say, ATI, will either have lots of parts left over and make more under another label, or they just know they are gonna make more and sell them off the other back of the building loading dock...winkwink...hey, it's how business gets done and has forever.
I would also add another source I know folks who swear by and the is
http://2filter.com...even when there is a prob with a filter, they always took care of my buds...me I buy the CHEAPEST price so that usually means buying from
http://www.MaxSaver.net from China. They don't sell knock-offs either...at least so far anyway.