I'm new to this forum, but scanning the loupe messages, I haven't seen this topi c:
For contact prints, etc. I happily use an old 50mm lens (reversed) from my 35mm camera equipment. Many I know do the same. I've just started LF (Tachihara field camera) photography and haven't yet purchased a loupe for focussing (I've actua lly managed pretty well without one actually -- good prescription on my eyeglass es, I guess). However, I'm scared to bring this lens under the hood for fear of scratching up the ground glass with the aperture spring thingy on the lens and s o forth. Also, not having a preset focus distance is much more awkward with grou nd glass than on a (light) table.
So the question is: does anyone have experience/warnings/tips for building a tub e to attach to a lens to convert it into a loupe with a collar? The lens is a Zu iko (Olympus) f1.8, so it's pretty compact (about 3/2 the width of many loupes). Since I typically carry a 35 mm camera anyway, it would be nice if this collar was reliably reattachable for 35mm work.
Thanks in advance! Eric Pederson