Looking for Olympus Photomicro Adapter L

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Vortimoeba
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Looking for Olympus Photomicro Adapter L

#1 Post by Vortimoeba » Tue Oct 27, 2020 1:59 pm

Hi! I am trying to set up a trinocular Olympus CX43 for DSLR photography and have stalked the forums and read the Alan Wood site to help determine what adapters I need.

So far, I have been able to source the U-SPT, PE 2.5x and a camera adapter. However, I cannot find an Olympus Photomicro Adapter L anywhere. The closest I've come is the Spach Optics website, but they don't seem to be interested in either answering their phones or replying to emails / webforms.

My questions:
I don't suppose anyone reading might be willing to part with their Olympus Photomicro Adapter L?
Has anyone heard of / used Spach Optics? What did they think? (Interestingly, their prices for other used items are far higher than Olympus quoted me for brand new parts)
Are there other options? I have heard about the Diagnostic Instruments PA1-10A, but can't find one of these either.

Thankyou for any help you can provide

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mrsonchus
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Re: Looking for Olympus Photomicro Adapter L

#2 Post by mrsonchus » Tue Oct 27, 2020 2:07 pm

Hi, here's one in the U.K. for a good price....
John B

viktor j nilsson
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Re: Looking for Olympus Photomicro Adapter L

#3 Post by viktor j nilsson » Tue Oct 27, 2020 2:14 pm

Are you sure you need the Photomicro Adapter L? I was under the impression that this was only for the finite era (i.e. BH and BH2) stands, not for the infinity scopes (CX/BX)? I may be wrong, though. I am only familiar with the finite microscopes.

Scarodactyl
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Re: Looking for Olympus Photomicro Adapter L

#4 Post by Scarodactyl » Tue Oct 27, 2020 5:53 pm

viktor j nilsson wrote:
Tue Oct 27, 2020 2:14 pm
Are you sure you need the Photomicro Adapter L? I was under the impression that this was only for the finite era (i.e. BH and BH2) stands, not for the infinity scopes (CX/BX)? I may be wrong, though. I am only familiar with the finite microscopes.
The PE eyepieces have the same sensor distance, and at least some of the adapters have the same 38mm dovetail as the finite era.

I'd suggest doing this instead of buying an expensive photomicro L: viewtopic.php?f=9&t=9093
The photomicro is beautiful, surely the most stylish miroscope camera adapter ever made by a long shot, but imo it's better to save some dough and spend it on optics instead.

Vortimoeba
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Re: Looking for Olympus Photomicro Adapter L

#5 Post by Vortimoeba » Tue Oct 27, 2020 8:06 pm

mrsonchus wrote:
Tue Oct 27, 2020 2:07 pm
Hi, here's one in the U.K. for a good price....
Oh thanks for that. Didn’t come up in my EBay searches, perhaps because the seller doesn’t list Australia as a shipping destination. I’ve now asked them if they’d consider this.
viktor j nilsson wrote:
Tue Oct 27, 2020 2:14 pm
Are you sure you need the Photomicro Adapter L? I was under the impression that this was only for the finite era
Honestly I’m not sure at all. Would anyone be able to shed more light on this? I suppose it would be necessary to use the adapter if using a photo eyepiece as Scarodactyl suggested. Without the photo eyepiece, I’d imagine that connecting a camera on the end of the trinocular port would mean the light beam would be wider than the camera sensor. Not sure. I don’t even have the microscope yet. I was deferring to the Alan Wood CX microscope adapter article, but didn’t contemplate that some CX models may not have used infinity objectives.
Scarodactyl wrote:
Tue Oct 27, 2020 5:53 pm
I'd suggest doing this instead of buying an expensive photomicro L: viewtopic.php?f=9&t=9093
That’s an interesting adapter variation! I’ll look into alternatives like that if I’m unable to buy the UK adapter.

Thankyou for your help! If anyone could shed further light on alternatives for infinity focus objectives that would be great.

Scarodactyl
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Re: Looking for Olympus Photomicro Adapter L

#6 Post by Scarodactyl » Tue Oct 27, 2020 8:13 pm

Just to be clear, at least earlier model olympus infinity microscopes use exactly the same mounting hardware as the BH2 series. It's a wonderful bit of backwards/forwards compatibility. They may have changed it at some later point, but it worked that way on the BX40 I had for a bit.

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mrsonchus
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Re: Looking for Olympus Photomicro Adapter L

#7 Post by mrsonchus » Tue Oct 27, 2020 8:44 pm

Argghhh Just realised I've been cracking-on about the U-SPT adapter which sits below the L adapter - apologies folks... :oops: :oops:
Last edited by mrsonchus on Tue Oct 27, 2020 8:54 pm, edited 1 time in total.
John B

viktor j nilsson
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Re: Looking for Olympus Photomicro Adapter L

#8 Post by viktor j nilsson » Tue Oct 27, 2020 8:45 pm

Scarodactyl wrote:
Tue Oct 27, 2020 8:13 pm
Just to be clear, at least earlier model olympus infinity microscopes use exactly the same mounting hardware as the BH2 series. It's a wonderful bit of backwards/forwards compatibility. They may have changed it at some later point, but it worked that way on the BX40 I had for a bit.
Wonderful compatibility for sure! But very strange that they never made a white version for the CX/BX line, but instead discontinued the adapter L in 2003. I just looked through a BX51 brochure to try to figure out how what you would use to hook up a full frame camera using more recent accessories, but I found the flow chart to be 100% confusing. Is there really no modern equivalent to the Photomicro Adapter L? I find that strange.

Vortimoeba
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Re: Looking for Olympus Photomicro Adapter L

#9 Post by Vortimoeba » Wed Oct 28, 2020 10:13 pm

viktor j nilsson wrote:
Tue Oct 27, 2020 8:45 pm
Is there really no modern equivalent to the Photomicro Adapter L? I find that strange.
Yes I think it’s really strange too.

I don’t quite understand the setup because none of it is in front of me. I’m assuming the light coming out of the trinocular port is still collimated / infinity corrected. Why does the U-SPT need to be so long? I then assume the photo eyepiece PE 2.5x is acting as the trinocular port’s “tube lens”, is this correct? The PE 2.5x then focuses the real image onto the camera’s image sensor at a predetermined distance of 125mm, so it makes sense that the Photomicro Adapter L is fairly long.

In other news, the seller has agreed to ship to me so I’ve managed to snag myself that silver Photomicro Adapter L mrsonchus pointed me to.

Thanks!

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Re: Looking for Olympus Photomicro Adapter L

#10 Post by carlh6902 » Thu Oct 29, 2020 12:12 am

This isn't really relevant to this discussion, but I'll add this little tidbit here, just so that any future searchers have a chance to see it. The Photomicro L Adapter has the proper bore to accept the NFK projection optics, but the U-SPT (UIS version) does not. The bore is bigger in the UIS one, and the NFK 2.5x will drop all the way in! The opposite of course is therefore true. The UIS version will not fit into the Photomicro L Adapter.

Carl
--- If you're in the Kansas City area and you need help with an Olympus BH-2 scope, PM me. I love to work on these things ---

Scarodactyl
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Re: Looking for Olympus Photomicro Adapter L

#11 Post by Scarodactyl » Thu Oct 29, 2020 12:49 am

Vortimoeba wrote:
Wed Oct 28, 2020 10:13 pm
. I’m assuming the light coming out of the trinocular port is still collimated / infinity corrected. Why does the U-SPT need to be so long? I then assume the photo eyepiece PE 2.5x is acting as the trinocular port’s “tube lens”, is this correct?
No, all the light first passes through the tube lens in thr base of the head in an Olympus system, so from the neck up it is finite. There are some stereo systems that work like you are thinking but it isn't something I've seen in a compound scope.

enricosavazzi
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Re: Looking for Olympus Photomicro Adapter L

#12 Post by enricosavazzi » Fri Nov 13, 2020 7:32 am

Vortimoeba wrote:
Tue Oct 27, 2020 8:06 pm
viktor j nilsson wrote:
Tue Oct 27, 2020 2:14 pm
Are you sure you need the Photomicro Adapter L? I was under the impression that this was only for the finite era
Honestly I’m not sure at all. Would anyone be able to shed more light on this? I suppose it would be necessary to use the adapter if using a photo eyepiece as Scarodactyl suggested. Without the photo eyepiece, I’d imagine that connecting a camera on the end of the trinocular port would mean the light beam would be wider than the camera sensor. Not sure. I don’t even have the microscope yet. I was deferring to the Alan Wood CX microscope adapter article, but didn’t contemplate that some CX models may not have used infinity objectives.
I have the Olympus Photomicro L adapter (the late "creamy"-colored model) and it works fine on the U-SPT. The L adapter has an Olympus OM mount, and from that end you need an adapter for your camera. OM adapters are available for virtually all mirrorless camera systems, but there are a few DSLR lens mounts that cannot be adapted to OM because their flange distance is too high.

Scarodactyl
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Re: Looking for Olympus Photomicro Adapter L

#13 Post by Scarodactyl » Wed Nov 18, 2020 3:34 am

This is presumably the modern equivalent
https://www.ebay.com/itm/193755266703

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