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Mineral Photography40x - 50x lenses?

19th Mar 2019 21:04 GMTOT. Ljøstad Expert

Have somebody used a 40x - 50x microscope lens for mineral photography?

19th Mar 2019 23:30 GMTJeff Weissman Expert

OT, I'd think that the working distance would be way to small to properly illuminate the specimen at 40x. I have this issue working with a 20x microscope lens. There are extra long WD lens out there, maybe they will work, but I haven't tried one.

20th Mar 2019 02:55 GMTHiro Inukai

Mitutoyo has three 50x objectives but only one has enough working distance in my opinion to be usable for mineral photography:


0.42 NA, 20mm WD

0.55 NA, 13mm WD

0.75 NA, 5.2mm WD


The (relatively) popular 10x/0.28 NA Mitutoyos have a generous 33mm WD, more than enough for lighting; 20mm is getting uncomfortable but it's still possible to light the subject.


My overriding concern with such high magnifications for mineral photography is the difficulty in focus stacking such highly reflective and geometric structures. Even slabbing images and stacking at 10x, I struggle with light halos and the very weird phenomenon of actually being able to see "around" an object.

21st Mar 2019 20:07 GMTOT. Ljøstad Expert

I have no problem illuminating specimens with my Mitutoyo 20X. Insect photographers takes some fantastic photos using 40 and 50X SLWD and ELWD microscope lenses, so why should not mineral photographers get the same high quality results of minerals? I will give it a try.

23rd Mar 2019 19:02 GMTHarald Schillhammer Expert

Lazlo Toth from Hungary is creating outstanding photos with a 50x lens, however, I don't know right now which one he uses.

24th Mar 2019 04:19 GMTOT. Ljøstad Expert

It is a pity that he has only posted 7 photos on Mindat.

24th Mar 2019 18:26 GMTHarald Schillhammer Expert

OT. Ljøstad Wrote:

-------------------------------------------------------

> It is a pity that he has only posted 7 photos on

> Mindat.



I agree.
 
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