49mm CPL?

Anyone know of anywhere that stocks the above, either in or of similar quality to the Hoya Pro 1D series at a reasonable price?

Hardly anyone unfortunately. Cheaper to spend three quid on a 49->52mm step up ring and get a 52mm Hoya Pro1 CPL from hvstar.net assuming the 1.5mm step-up increase in radius doesn't interfere with the hood on whatever lens it is you've got (Oly by any chance?)

Wow, I've never heard of that one before. Good luck. If B&H doesn't have one, I can't say who would.

martinsmith wrote in post #6208871
Anyone know of anywhere that stocks the above, either in or of similar quality to the Hoya Pro 1D series at a reasonable price?

I've been shooting Oly wide angle primes on my 5D...picked up a 49mm CPL from 2filter.com. Couldn't tell you who in the UK would have them. If I had to take a guess, I'd say that 2filter would ship international. Here's the link to their B+W page:

http://www.2filter.com …_Circular_Polar​izers.html

Yes, I'll be using it on an Oly 28mm and a Zeiss 135mm.

I've found a UK supplier but that means paying UK prices. Thanks for the link. I'll check that out.

martinsmith wrote in post #6213629
Yes, I'll be using it on an Oly 28mm and a Zeiss 135mm.

I've been using the Oly 21, 24, and 28...gotta love that corner-to-corner sharpness on a wide angle lens. Take that, Canon!

I've found UK suppliers that fit my budget for CPLs. I can get a Pro 1D or a B+W `MRC' for the same price.

Any recommendations on which is the better?

I'd go with the B+W. In addition to being a personal preference, the coatings on the Hoyas have been reported in this forum, and others, as very difficult to clean. Not to mention that certain Hoya polarizers (can't recall the specific model number) sometimes come apart unexpectedly due to a faulty retaining ring.

Hoya UVs are a royal pain to clean but I have no more trouble wet cleaning my Hoya Pro1 polarizers as I do my B+Ws. I find isopropyl alcohol solution, lens tissue and patience the most effective way of removing the cleaning streaks.

I went with the B+W.

I have a few Hoya filters including a couple of CPLs but have no problems cleaning them with a lenspen. Cloths are a different story.