Originally posted by marcusBMG Thats why my diy ones have two support points.
Precisely! If I can get them posted, here are two properly designed old tripod mounts, 1) a 200mm f4 SMCA ED Macro which has a hole for a video pin fore and after of the threaded hole, although they are a positioned fraction of a millimeter farther than standard spacing, so they require a plate with a slit for the tripod screw; and 2) 70~200mm f2.8 Tamron. Note that being a newer lens, the Tamy foot also has Arc-Swiss compatible grooves.
OOPS. Correction. I forgot that the tripod foot on the Tamron at this time was a Chinese-made substitute that had an Arca-Swiss dovetail rail. The original Tamron foot did not.
Last edited by WPRESTO; 10-27-2021 at 06:46 PM.