Recent content by r_a_feldman

I have successfully used synthetic Canada Balsam from Benz Microscopes (https://benzmicroscope.com/products/chemicals-mounting-medium-canada-balsam-synthetic-in-xylene-25ml-bb0020?). When I asked them if it could be used on lenses, however, they replied that they did not have any experience...

You do not need a tripod with a horizontal center. Simply get a good regular tripod and then get an accessory arm such as the Benro GPAC502 Adjustable Multi-Angle Column (https://www.bhphotovideo.com/c/product/803383503-USE/benro_gpac502_adjustable_multi_angle.html) or similar (the Bogen 131...

I have a 200mm-long Arca quick release plate that I would use and just slide the plate sideways in the tripod head bracket. However, I prefer just hand holding the camera.

I realize that I am moving sideways more than needed. I really should put the camera on a tripod and experiment to see if ~3” that you use gives a better 3D effect than 6”, 9” or 12”.

I do stereo pairs with an Olympus Pen FT. The portrait-format orientation of the Pen FT works well for stereo pairs. There is no need to crop the negatives and I also use adjacent frames. edit: I have scanned and inverted some of my negatives, which are attached. The originals are on Ilford...

The serial number on the lens linked to is 31893, which is a very similar 5-digit number.

My favorite lens caps are the 49mm caps made by Asahi Pentax that have both the two spring clips and that have a full lip that goes outside the lens/filter. I use them on my Olympus Zuiko OM-1 lenses, never having owned a Pentax camera. Be aware, however, that a number of modern filters have too...

There certainly are great old Nikkor lenses, such as the 55mm macro, but there are other that are not so great. My wife had an F3 with the 55mm macro and a 35-105 zoom. I loved the macro, but never liked the zoom. I don't like one-touch zooms to start with and the 35-105 we had would slide...

I ordered and assembled an adapter kit from Frans de Gruijter in the Netherlands, which is listed on page 11 of https://butkus.org/chinon/batt-adapt-us.pdf. That was about 10 years ago, however, so I do not know if the kits are still available. (The PDF is dated 2014.) The kit includes a...

I just received an order of three 49mm UV filters from Filterfind. I found the description (“looks new”) was a little optimistic, as all three were smudged, They did clean up well, however, and I am quite satisfied with the order. Why did I order a common filter from Filterfind? I had earlier...

The Olympus OM-1 21mm f3.5 is similar to the Voigtlander, but a little smaller. I have an OM-1 28-48mm f4 zoom. For a zoom, it is quite small, but it is still 300g in weight. As Xkaes notes, there are lots of lenses made for 35mm SLRs that can easily be adapted, but they all are bigger than...

The problem here is that I am looking for small lenses. I had a 20mm Nikkor (now sold) and have a variety of Olympus OM-1 lenses from 28mm to 200mm, but I, like Crysist, am looking for lenses that are comparable in size to native Pen F lenses. Using an OM-1 lens on a Pen F adds about 17mm to the...

@Crysist, I agree with what you are saying. I have tried a number of ways to get a small 30mm lens for my Pen FT, without success. I tried an Industar lens, a Schneider from a Robot, even the lens from a Pen S, but all of them protrude too far into the Pen FT. I also toyed with using a negative...

You cannot use Leica M-mount lenses on a Pen FT for several reasons: 1. The Film-to-Flange distance of the M-Mount is 27.95mm and the Pen is 28.95mm, so the M-Mount lens cannot be focused to infinity. For an LTM lens, the F-t-F distance is only 0.15mm less than the Pen's, so conceivably you...

SUCCESS! After carefully soaking parts of the last assembly in the tetrachloroethylene brake cleaner (repeatedly applying it to the glue lines with a small artist's paintbrush), I was able to disassemble the unit. Now all of the lenses are free. I have treated them with hydrogen peroxide for...