JML 20X Results (keep adding pictures)
Moderators: rjlittlefield, ChrisR, Chris S., Pau
Green Crystal Grotto
A photo of a malachite specimen.
110 images, JML 20X with Pentax 200mm telephoto as tube lens. Zerene PMax, synthetic stereo. LED bucket light.
110 images, JML 20X with Pentax 200mm telephoto as tube lens. Zerene PMax, synthetic stereo. LED bucket light.
- rjlittlefield
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- Craig Gerard
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OK,his thread (and others) have convinced me to buy one of these. I have been compiling information from this site about these lenses, best techniques, etc. But one thing has escaped me...what exactly were these lenses designed for?
EC
www.macrocritters.wordpress.com
EC
www.macrocritters.wordpress.com
You mean there are 2 JML lenses being discussed on this site? Man it is hard to keep track of things! LOL! Yes, I have decided to get a JML 21mm f3.5. That was the lens I was referring to when I asked what it was originally designed for...abpho wrote:The lens used in this thread is a JML Optical 20x 0.30 222/0 WD 12mm objective lens. It was used on a microscope. Are you thinking about the holy grail of macro lenses, the JML 21mm f/3.5? Currently neither is available on E-bay.
EC
JML makes a ton of lenses for all sorts of applications. I believe some of the users here are (were) using a set of JML enlarging lenses. Maybe called copy lenses. I bought a JML 10mm f/1.3 lens in hopes of finding a hidden gem. Ends up 10mm is too high a magnification for what I can use with my setup (which is all manually driven). I think 10mm focal length lens has roughly a 20x magnification. That lens ended up being completely useless to me. You might find it on E-bay one of these days.
I'm in Canada! Isn't that weird?
- rjlittlefield
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We don't know exactly what application the JML 21mm f/3.5 was designed for. The mount is similar to what's commonly used in microfilm readers, but it has a very wide field of view and extremely low CA for that application. I'm guessing it was targeted for some industrial inspection job. See discussion starting HERE.Ecooper wrote:Yes, I have decided to get a JML 21mm f3.5. That was the lens I was referring to when I asked what it was originally designed for...
--Rik
Thanks. Given the high interest in this lens, it would be really useful to have a thread or pdf file readily available that summarizes the specs.rjlittlefield wrote:We don't know exactly what application the JML 21mm f/3.5 was designed for. The mount is similar to what's commonly used in microfilm readers, but it has a very wide field of view and extremely low CA for that application. I'm guessing it was targeted for some industrial inspection job. See discussion starting HERE.Ecooper wrote:Yes, I have decided to get a JML 21mm f3.5. That was the lens I was referring to when I asked what it was originally designed for...
--Rik
EC
- rjlittlefield
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I've added it as a FAQ: What is a JML 21mm f/3.5 lens?Ecooper wrote:Given the high interest in this lens, it would be really useful to have a thread or pdf file readily available that summarizes the specs.
--Rik
- naturephoto1
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A first (very garish PMAXmethod ) effort from me on this JML 20:1, adding to the sunset fan club. The corners on APSC arn't great but still, value for money. Flickr seemed to like it though.
Sunset Moth Scales by Johan J.Ingles-Le Nobel, on Flickr
Sunset Moth Scales by Johan J.Ingles-Le Nobel, on Flickr
My extreme-macro.co.uk site, a learning site. Your comments and input there would be gratefully appreciated.