Browsing B&H today, I found that Pentax makes a quick release system for 35, 645, and 67 cameras. Has anyone ever used it? It seems to be designed as an add-on for tripod heads that don't feature quick release. Below is info clipped from the B&H description:
The Pentax Quick Shoe is a quick release system containing two parts. With the top section screwed into the camera's tripod socket (Quick Shoe Adapter Plate) and the bottom attached to the tripod head (Quick Shoe), this accessory speeds up mounting and removal of the camera to and from the tripod. This item can also be used on other cameras.
# Pentax Quick Shoe Combinations #38465 - Quick Shoe Set 35mm (Quick Tripod Mount for SLRs - Includes #38456 Quick Shoe and #38459 Quick Shoe Adapter)
# #38456 - Quick Shoe 35mm (Mounts on tripod, requires #38456)
# #38459 - Quick Shoe Adapter 35mm (Mounts on camera. Requires #38456)
# #38464 - Quick Shoe Set for 645, 645n/67/67II - Quick Tripod Mount - Includes #38456 Quick Shoe and #38458 Quick Shoe Adapter)
# #38458 - Quick Shoe Adapter for 645, 645n, 67, 67II (Mounts on camera. Requires #38456)
