i cant seem to find this info anywhere... i am looking at a hoya or a B+W uv protection filter.... coincidentally, i see a number of them for sale on here, but all seem to be of the slim variety, and i cant figure out if a standard lens cap will fit, or if i need one of those slip-on caps. all of the ones in the FS section are listed as BNIB, so i cant ask the seller to open the package and test.
for example:
http://www.bhphotovideo.com …ltraviolet_UV_0_Haze.html