I have made any post for a while about my secondary hobby; photographing coins. For about three years I have been slowly building and adapting a copy stand for photographing coins. In earlier blogs I have covered some of the design points. last month I made some improvements, but as always they are compromises. First off how my copy stand is assembled. I have a Kaiser copy stand column that is counterbalanced by spring steel tape( inside the column) the column is mounted on a 2 ft square of granite ( weighs over 60 pounds) which is covered( see first picture) with black out material from Edmund's optical; you can see the uncovered stone near the column base. The granite slap sits on four sorbothane pads, the pads in combination with the weight of the slab act as Vibration isolators. This is important as my rig is on the second story of our house.
In the first picture you can see a seven inch HMDO screen, I use a Sony A7rII. this camera is mirror less and can be thethered to a computer, but there is a fault with the Sony system, you can't have live view on the computer screen, so instead( like a number of Sony users) I use the HMDI screen to view which ever coin I am photographing. I used to have that HMDI screen mounted on a clamp on stand attached to the front of the granite slab but the stand got in the way too often. With the recent modification I discovered I could mount that screen to the camera arm. This is not ideal but it gives me a very clear working area below the camera lens, enabling me to position diffusers and reflectors much more easily.
The modifications I made were adding two panoramic arca clamps and two 200 mm double sided Arca rails. The two panoramic clamps rotate and positioned at 90 degrees to each other allow me to finely adjust the camera or camera and bellows for level. However one of the Arca clamps( Chinese made of course) had poor tolerances and actually adds some slant to the set up, the second clamp does compensate for it easily. I have looked for German and American made alternatives but they don't have the narrow profile needed for a macro stand. In a few months I will buy a new one gambling that the new one will have better tolerances