is there a optical difference between the T6-2X , Pentax 67 Rear
converter 2X or are there more (origional) 2x convertors
Why is the minimum focusing distance for the 400mm only 8 meters?
in the 35 mm world minimum distance of 10 times the...
I enjoined reading the posters a lot
I m considering to buy a 45/4 wide angle for my P 6*7 (like a 24 ~
21 mm for 35mm)
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