I joined 'cause I'm getin' desperate about finding a good 4x4 or 4x5 matte box for my canon lens. I have a Tiffen MB which is great, but won't fit my lens, even with the custom size adapter ring they made for me. I think the MB is for autofocus lenses and my lens aint. So the canon's numbers are YH16X7K12U and it rides on my JVC DV5000. Ultimately I'd like a 2 stage 4x5 with at least 1 stage rotatable, and a 138mm round or 4 1/2 round in the back for a Pola. Anyone using a MB on their canon lens?
Thanks, and I look forward to chatin' with you all in the future.