Atrocity alert! (But not on a Cotty scale). I thought I should check that the advice below was sound, so I attached an M42 Schneider 50mm lens to Pentax K tubes 2+3 by way of a M42-PK adapter, then used a PK-LM adapter to attach the tubes to my Leica M10 monochrom, since it’s the only full-frame digital camera I have, and took this picture of the top of an apple.
This is the full 35mm-sized frame, the apple is medium-sized, so the stalk thing at the top* is about 1cm diameter. https://share.icloud.com/photos/005Xj8RmZKnKBrfaWOdmnnFLw *any botanists in the room may tell us its proper name. > On 16 Jan 2025, at 15:34, Bob W PDML <pdm...@icloud.com> wrote: > > I seem to be missing posts. They’re not even in my junk folder, which is > where most of the PDML goes for some reason. > > Anyway, I have a pdf copy of the Pentax extension tubes manual which I found > online somewhere, and which is probably still available. It includes charts > and so on about what you need to photograph things at what scale. > > Try a 50mm lens with tubes 2+3. That should give you more or less 1:1 > magnification of a 24x36mm area (ie 35mm negative) with film-subject distance > of 204mm and an exposure factor of x3.8. The rest you can crop. This worked > for me when I was playing around with copying slides. > > But since you have all the gear, and presumably a digital camera, it should > be easy enough to find out by trial and error. > >> On 16 Jan 2025, at 15:08, John Sessoms <sesso...@earthlink.net> wrote: >> >> I would probably use a telephoto at closest focus & then crop a lot ... >> >> IN FACT, I just remembered doing that once before ... >> >> Thanks. >> >>>> On 1/15/2025 6:42 AM, Ralf R Radermacher wrote: >>> I'm hopeless at tabletop photography and I already get the willies when I >>> need to take photos for selling stuff on ebay. Might explain why I never >>> bothered to get a macro lens. >>> So, how do a take a photo of something about 1 centimeter square without a >>> macro lens? >>> I have SMC-M or SMC-A lenses with 20, 24, 35, 50, 85, 135 and 200 mm, a set >>> of extension tubes, and zooms 10-20, 18-135 and 55-300 mm. >>> Ralf > -- > %(real_name)s Pentax-Discuss Mail List > To unsubscribe send an email to pdml-le...@pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
