52mm Drop-in Screw filter holder52 (It enables the use of 52mm screw filters such as ND's) Would like to get my hands on one of these for my Canon 600mm F4L IS USM. (It also fits the 300, 400,500mm's) Have the Drop-in Circ Polarizer but would really like to do some work using 52mmND filters... have checked all the usual sources including Canon... wish I'd gotten one years ago when I got the lens (wasn't shooting in the ways I enjoy now) Does anyone have one they'd like to sell or know of one available anywhere...
Thanks in advance for any efforts on my behalf...P.
