On 3/13/2018 6:17 AM, Jan Steinman via olympus wrote:
From: Moose <olymoose@xxxxxxxxx>
Rather than all the Lieberkuhn
illumination for lighting from below through a transparent/translucent stage...
That's' “The Olympus Way,” as shown in their glossy sales literature.
However, there’s some interesting, creative work going on over at photomicrography.net. Put
“lieberkuhn” in the search field to see what people are cobbling together. The
conventional wisdom is to set things up horizontally, with (in order) your camera, Lieberkuhn
reflector, subject, light shield, then light source.
But then, they don't have an Oly Macrophoto Stand VST-1 & B Adapter & Extension Bar VST-E :-)
<http://omesif.moosemystic.net/om-sif/macrophotogroup/vst-1.htm>
Here’s one example, using RMS microscope optics:
http://www.photomacrography.net/forum/viewtopic.php?t=35424&highlight=lieberkuhn
Yup, I've already looked at those, and others elsewhere.
It’s a bit more trouble to set up and control than “The Olympus Way,” but then
it’s available, cobbled out of stuff you probably have laying around the house.
They all look highly jury-rigged, which would be OK, but for a couple of things. For one, the Oly stand, 65-166 tube,
bellows, and so on, are so, so solid, and work so precisely that, so far, with 38/2.8 and simple, continuous lighting,
everything is dead quick and easy. By comparison, those other, horizontal set-ups look less than really solid.
They also are large to huge. I couldn't leave them set-up all the time, so each use would be a new adventure in Rube
Goldberg land. The VST-1 with 65-116 tube and 38/2.8 mounted is sitting on a bookshelf. I can put it over on my desk,
attach A7 and be making images in moments.
The fussy, and probably impossible to find, Oly parts are the Lieberkuhn reflector itself and the lighting stuff. The
lighting is a lot of old ways to get illumination from below. As I suggested, the cheap 4x5" 'light tables' do all that
with cool, continuous light. They may or may not be as bright, but the goal is evenness, not fast shutter speeds - and I
have one I've already used for trans-illumination.
Also, being relatively cool and horizontal, one may just cut out shadow shapes and lay them on the surface. So, for at
least the first round, I think all I need is a Lieberkuhn reflector. Looking at the set-ups on on photomicrography.net
and elsewhere, it appears that they are easy to cobble up. I was particularly interested in one poster who said slightly
crumpled Al foil worked better than smooth.
The guy making them on a 3D printer also showed a clip-on one in his tests, but doesn't show it for sale. The others he
sells are designed with male threads to fit filter rings, but the Oly 20 & 38 mm have female threads for the macro
lights, not filter threads, they also are far back from the FEs and Oly themselves chose to attach their reflectors up
front.
Looking at the 38/2.8, it seems one might just slip a piece of white plastic or shiny Al with the right size hole over
the front and hold it on with an O-ring.
Rube Moose
--
What if the Hokey Pokey *IS* what it's all about?
--
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