In theory, the multi-resistant coating would help. B+W state in their catalog that the multi-coating, "does indeed enhance image quality significantly, especially with high-contrast subjects and when a light source (like the sun or a light bulb) is visible in the picture."


Of course, I suspect you know the theory and were hoping for more practical insights... So, I grabbed a couple of quick shots before heading into work this morning. Since bright windows are hard to come by at 5:31am, I shot directly into an LED Maglite. The best comparison would be between a standard vs. multicoated CPL, but since I don't have both, I used a B+W ND 103 (0.9/3-stop) - that and my B+W 10-stop are my only non-MRC filters - and a SlimK&auml;semann CPL (which has the MRC coating). Shots were with a 5DII and EF 24-105mm f/4<span style="color: #ff0000;"]L IS. I used f/8 to allow a combination of ghosting, flare, and aperture-blade starbursting. To bring up the flare, I shot +2 EC and pushed another 0.5 stops in DPP (which was the only PP on the images). The only difference in exposure was shutter speed to compensate for the differing filter factors.



B+W ND 103 (non-MRC)
[img]/cfs-file.ashx/__key/CommunityServer-Components-UserFiles/00-00-00-35-15/Flare_2D00_ND.JPG[/img]



B+WSlimK&auml;semann CPL (MRC)
[img]/cfs-file.ashx/__key/CommunityServer-Components-UserFiles/00-00-00-35-15/Flare_2D00_KSMCPL.JPG[/img]


The non-MRC ND filter has a little more flare - especially noticeable are the second (large) and third spots moving away from the light at 4 o'clock. The more distant flare spots are only very slightly fainter with the MRC coating. The ghosting is also appears a little fainter with the MRC coating, while the starbursts seem unaffected. Note that you can also see the effect of the CPL in eliminating the reflection at the bottom of the 5 on the clock. As a side note, theK&auml;semann CPL doesn't look any different in terms of flare effects from the MRC UV filter I keep on the lens, and neither look much different from no filter.


So, the MRC coating makes a modest difference, at least in this simple and contrived test.


Hope that helps...let us know what you decide to do!


--John