anyone know the difference between B&W MC and MRC filters?

[col4bin]

I am looking to get an 82mm CP for a lens I am about to buy (16-35 II). All of my B&W filters are MRC and I never noticed an MC option.

[ben_r_]

I think its just a title error on behalf of the reseller. I have noticed it before especially on listings at Amazon. Post a link of where you saw it.

[col4bin]

look here:

http://www.bhphotovideo.com/bnh/controller/home?O=search&A=search&Q=&sb=bs%2Cupper%28ds%29&sq=asc&sortDrop=Brand%3A+A+to+Z&ac=&bsi=&bhs=t&shs=&ci=115&at=Brand_B%2BW&at=Size_82mm&basicSubmit=Submit

[Xerox]

MC:
With normal single-layer coatings the loss of transmission for both surfaces on average
amounts to only approximately 3%, whereas with more complex multiple coatings (MC) it amounts to a mere 0.5%. A more significant aspect than the gain in light transmission is the reduction of reflections and ghost images to about 1/3 with simple coatings, and to less than 1/16 with MC coatings. Coating is even more important when two filters are used in combination. Not only will the losses in transmission
and the reflections be doubled with such combina-tions, but also multiple reflections are possible be-tween the filters, which may cause disturbing double
images when there are light sources included in the image area. Single coatings reduce the occurrence of double images to approximately 1/8, whereas MC
coatings reduce it to approximately 1/70!

MRC:
MRC coating (Multi-Resistant Coating) by B+W is not only an extraordinarily effective multiple layer
coating, it is also harder than glass, so that it protects filters from scratches (for instance when cleaning the filters), and it is also water- and dirt repellent, thus
facilitating filter maintenance.

http://www.schneideroptics.com/info/handbook/pdf/B+WHandbook_Full.pdf

[ben_r_]

Ah, well there you go!

[Jon]

I've ordered B&H's B+W MC circular Polarizers and they've all arrived bearing an MRC on the filter. So from my experience there's no difference.