We have all experienced the problem of blur on outer 1/6 of an image, taken at slow shutter speed. The problem has been discussed before and the conclusion was that shuttercurtainaction will course blur. It have been a stone i my shoe for a long time! Despite having the heaviest Gitzo tripod with the biggest Studioball head, I still did experienced blur sometime. First action was to change the plate of Studioball (in plastic) with Manfrottos bigger 6-edged plate in aluminum. It helped, but didn't solved the problem complete. If you put your 67II on the tripod, you will experience that it is easier to wiggle the body sideways than to and fro. Look at the bottom of the body, and you will see that there are ridges that make it impossible to have full contact with the heads plate. The ridges are left-overs from the old 6X7 - it is ridges from the former battery chamber.Now I have grinded these ridges off the plastic bottom. And it works! Be very careful if you plan to do the same. Grinding have to be absolute in plane, otherwise there isn't full contact. The ridges are app. 0,1 mm. high. If you plan to sell the camera second-hand - don't do it! It looks awful! There is a screw next to the socket for tripodscrew. This hole have to be drilled an additional 0,1 mm. deeper (3,5 or 4,0 mm. drill will fit). Also be careful not to grind the serial number off. Dear Mr. Pentax! Next upgrade of molding tools to the plastic bottom of 67II body, have to be redesigned!

Bert Wiklund, www.bwfoto.dk

-- Bert Wiklund (bw@bwfoto.dk), February 09, 2002