[Leica] Will you put filter infront of your Noctilux

[kkanno at users.symmetric.net (Ken)]

wildlightphoto at earthlink.net wrote:
> Roger Hart wrote:
> 
> People can talk all they want about not wanting to put another piece of
> glass in front of their expensive lens...but if you buy a high-quality
> filter, no one in the world could tell the difference in your photographs.

This is sort of a tangent, but I just compared some B&W MRC UV filters 
to some Hoya HDs (they come in the black box). Both are supposed to be 
top of the line.

Build quality- B+W wins if you like heavy chunks of brass. The Hoya 
stuff is as good as it gets in aluminum. I've found the brass threads 
from B+W can be rough, I have put wax on them so they don't tear up my 
lenses.

reflections- the B+W MRCs are far more reflective than the Hoya HD 
stuff. Both are good though.

The new B+W "thin" filters are thinner than their usual stuff, but the 
difference isn't much with you compare them side by side to anything 
else. A lense cap will fit on them, but it's only by about 2 threads.

Also, B+W just discontinued all blue cooling filters as of 1-1-2010. I 
bought as many as I could from various dealers, and can't find any other 
maker of multicoated cooling filters at this point.