 Posted: Fri Jan 26, 2024 8:13 am Post subject: |
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simple.joy wrote:
| mr_tibbs2004 wrote: |
Not to get further off topic, but how did you adapt these? I just recently started to play with macro and would love to try these enlarger lenses. I'm sure this has been discussed before so sorry in advance. |
All of the E36, E66 and E90 lenses do have a standard LTM/M39 thread, which is really simple to adapt if you already have a setup for M42 lenses - just one more M39 to M42 ring. If you mount them in reverse you either need to use the filter thread (sizes vary, but the E36 and E90 lenses generally have a 37.5x.0.5 mm one, which you can find some step rings for if you look around. I tend to adapt them via their M39 thread as well, because it works with all of them.
Here's an example using the metal tubes they were used with in their original application:
and here's how it looks like on the bellows:
Same thing could also be achieved with an M58 helicoid though. I like to use those metal tubes, because I know they were designed for the these specific lenses but everything that's not highly reflective should work reasonably well.
For high-magnification macros it's best to mount shorter focal length enlarging lenses onto a suitable tube lens. That's what I've done with most of my shots made with the Copal-E18C lenses and some of the Copal-E36 48 mm ones. The nice coincidence (or production related reason, who knows...) that the former fit on the threads of the longer E36 and E90 lenses motivated me explore them further:
 Stacking some T‘s (Tomiokas) by simple.joy, on Flickr
but generally there are lots of good tube lenses, most of them not very expensive. I'd encourage you to take a look at Robert OTooles great articles and reviews on the matter: https://www.closeuphotography.com/tube-lenses
You can get really close this way (depending on the setup and focal length of the reversed lens on the front) and still get more than reasonable quality across a full frame sensor (which is harder with most microscope objectives):
 Screw you! I won't get closer... by simple.joy, on Flickr
 Strong rubber bonds by simple.joy, on Flickr
 Please hold the line, color! by simple.joy, on Flickr
 Meet my better half! by simple.joy, on Flickr
While I found some of the Tomioka made lenses among the best out there in terms of sharpness and correction, you can get excellent results with a good number of enlarging lenses this way. Let me know if you want some specific recommendations or have questions about the ones you already have at your disposal.
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Manual lens enthusiast
https://www.flickr.com/photos/simple_joy/ |
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