Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

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mrsonchus
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#31 Post by mrsonchus » Fri Oct 26, 2018 4:53 pm

mnmyco wrote:I have a canon 60d and an ortholux with a trinocular head. I use this:

https://www.amazon.com/OMAX-Microscope- ... B01D914LT2

It works in any eyepiece so I do not need all the other attachments. It is a built in 2x lens.

mnmyco
A perfectly food adapter. I know also because when I use my Canon EOS1200D with my trinicular stereo 'scope I use this one and it gives excellent images. The photo-port has a simple adapter to 23mm into which this one 'plugs' with the Canon atop. The height of the photo-port is adjustable and this enables parfocality of camera and eyepiece....

Here's a picture,
This is a 5mp ToupCam that I also use, tethered (USB2) to a laptop and ToupView software,
ws_DSCN9832.jpg
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This is the adapter you show, badged by 'Brunel Microscopes' here in the U.K.,
ws_DSCN9834.jpg
ws_DSCN9834.jpg (66.97 KiB) Viewed 17570 times
Fitted it looks like this, and is again tethered via USB2 to my laptop running Canon's camera-control software,
ws_DSCN9835.jpg
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The adapter you show really does work very well indeed. When I mount the Canon to my Orthoplan however I was lucky enough to spot the entire Leitz optical adapter for a reasonable (very) price and use this although the adapter here would be fine also....

John.
John B

einman
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#32 Post by einman » Fri Oct 26, 2018 6:55 pm

Guys,
Can you post a shot of your set-up so we can compare against mine? Notice the trinoc on my Leitz Dialan has a built in 1.25X lens prior to the variable phototube. Not all Leitz trinoc heads are the same.

MichaelG.
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#33 Post by MichaelG. » Fri Oct 26, 2018 8:57 pm

MichaelG. wrote:Sorry, I will be out for a while ... but will resume this interesting discussion later.
Hello again ... I'm back

Thinking this through: I believe that [in common with most other eyepieces] the zoom unit itself was designed to produce a virtual image at 'infinity' ... and that the additional lens in the camera module focused that onto the film.
i.e. although built as a unit, it was an 'afocal' system ... just like using your complete camera [with its lens] to photograph through the normal eyepiece of the microscope.

BUT this zoom 'eyepiece' [again, in common with most eyepieces] is also capable of projecting a real image at some finite distance. ... If the optical corrections are adequate then this allows you to place a sensor directly at that location [without a camera lens] ... The evidence from einman tells us that this works nicely.

It is very likely that the sensor focus will not be parfocal with the visual eyepieces.

I hope that makes sense [especially as English is not your first language] ... I will try to clarify any points that trouble you.

MichaelG.
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#34 Post by einman » Sat Oct 27, 2018 2:07 am

By the way my system is parfocal as well. It does not appear that the heads pictured contain a 1.25X lens as does mine. Just a comment.

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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#35 Post by einman » Sat Oct 27, 2018 2:21 am

There are variations in the heads available for Leitz scopes. Here are the 2 Diaplans I own. The one on the right has a 1.25X lens in the quad head. It is quad because it has a camera port to the rear as well. The one on the left does not have the 1.25x lens. The system on the right is parfocal and is set up as described earlier. It has a wide field head and eyepieces. The FOV on the sensor is smaller than is observed through the eyepieces, in part because they are 26mm super wide FOV eyepieces.

Image

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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#36 Post by MichaelG. » Sat Oct 27, 2018 8:27 am

There may be another significant difference between the systems being used by 92111 and by einman:

einman uses a Canon DSLR, successfully
92111 has a Sony mirrorless camera https://www.dpreview.com/reviews/sonynex5n

The Flange-to-Sensor distance is much smaller on the Sony ... an extension tube may be required.

MichaelG.
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92111
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#37 Post by 92111 » Sat Oct 27, 2018 9:17 am

yes.that is what i want to express.i bought a wrong adapter.the new adapter is in the way.

92111
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#38 Post by 92111 » Mon Oct 29, 2018 6:57 am

hello everyone ,after change a adapter,it works? i can get FOV when variable lens at 10x,but i can't get a FOV when it at 5x,how can i make it in best work situation.
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#39 Post by 75RR » Mon Oct 29, 2018 7:09 am

... i can't get a FOV when it at 5x,how can i make it in best work situation.
There may be an auxiliary lens below the condenser that you swing in with low magnification objectives.
Make sure you swing it out at higher magnifications.
Alternatively some condensers have a swing lens on the top.
If it is on top then you need to swing it out. In others the top lens simply unscrews. Not sure which you have.
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#40 Post by MichaelG. » Mon Oct 29, 2018 8:36 am

92111 wrote:hello everyone ,after change a adapter,it works? i can get FOV when variable lens at 10x,but i can't get a FOV when it at 5x,how can i make it in best work situation.
Good to see that it works at 10x

As I mentioned before: You are operating this 'eyepiece' outside its design envelope.
You may find, however, that an increased length of extension tube would help.
... I can only suggest that you experiment.

Alternatively; you could try the 'afocal' arrangement [with a standard lens on the camera], which is much closer to how the 'zoom eyepiece' was intended to be used.

MichaelG.
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92111
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#41 Post by 92111 » Mon Oct 29, 2018 1:11 pm

MichaelG. wrote: You are operating this 'eyepiece' outside its design envelope.


MichaelG.
should i buy this?
https://item.taobao.com/item.htm?spm=a2 ... =14#detail

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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#42 Post by MichaelG. » Mon Oct 29, 2018 1:34 pm

92111 wrote:
MichaelG. wrote: You are operating this 'eyepiece' outside its design envelope.

MichaelG.
should i buy this?
https://item.taobao.com/item.htm?spm=a2 ... =14#detail
I don't think you need to do that ...
First try holding [using tripod or other stand] the Sony Nex with a lens fitted above the Zoom Eyepiece.

MichaelG.
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Too many 'projects'

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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#43 Post by 92111 » Mon Oct 29, 2018 2:44 pm

thank you MichaelG.
i need time to do that ,my two hand sony has no lens ,and i have no money now.
i find my sony not good at record vedio,i don't like take photos ,l like vedio

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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#44 Post by einman » Mon Oct 29, 2018 3:12 pm

You will need to use the swing in lens on top of the condenser assuming the condenser you have has that accessory. Anything below 10x requires the swing in lens generally.

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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#45 Post by 92111 » Mon Oct 29, 2018 3:19 pm

einman wrote:You will need to use the swing in lens on top of the condenser assuming the condenser you have has that accessory. Anything below 10x requires the swing in lens generally.
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#46 Post by einman » Mon Oct 29, 2018 3:36 pm

I believe that condenser uses a slide in and out lens. You should be able to move the condenser top in and out as I recall.

92111
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#47 Post by 92111 » Fri Nov 16, 2018 2:41 am

MichaelG. wrote:
Alternatively; you could try the 'afocal' arrangement [with a standard lens on the camera], which is much closer to how the 'zoom eyepiece' was intended to be used.

MichaelG.
can i use industrial camera lens? like this?,they are very cheap in china.
https://picclick.com/1pc-Used-Good-TAMR ... 45278.html
https://www.ebay.com/itm/163059545286
https://picclick.com/TAMRON-20HC-25mm-1 ... 91056.html

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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#48 Post by MichaelG. » Fri Nov 16, 2018 8:04 am

92111 wrote:
MichaelG. wrote:
Alternatively; you could try the 'afocal' arrangement [with a standard lens on the camera], which is much closer to how the 'zoom eyepiece' was intended to be used.

MichaelG.
can i use industrial camera lens? like this?,they are very cheap in china.
https://picclick.com/1pc-Used-Good-TAMR ... 45278.html
https://www.ebay.com/itm/163059545286
https://picclick.com/TAMRON-20HC-25mm-1 ... 91056.html
Those industrial lenses are typically 'C mount' or 'CS mount' [same mounting but different flange-focus]
https://www.ikegami.com/cb/products/pdf ... smount.pdf
... Do you have mount adapter for the Sony? or do you also have a 'C mount' camera'

I notice that you wrote, on 29-October:
i need time to do that ,my two hand sony has no lens ,and i have no money now.
i find my sony not good at record vedio,i don't like take photos ,l like vedio
... so I am a unsure about your intentions

MichaelG.
.
.
Edit: Different C-Mount lenses cover various 'image circles' ... Longer focal length length lenses [around 35 to 45 mm] are likely to give better coverage on the Sony Nex5 sensor. ... The short focal lengths will probably 'vignette' quite severely.
.
Edit: Here is a useful discussion:
https://www.dpreview.com/forums/thread/3052859
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#49 Post by 92111 » Mon Nov 26, 2018 11:22 am

Hi mrsonchus
how can i get right from left
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mrsonchus
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#50 Post by mrsonchus » Mon Nov 26, 2018 11:39 am

Hmm, that certainly looks like the reduction-lens I have...... I don't really know how to proceed exactly, but my first move would be a disassembly of the housing to 'get to the basic unit' that is the same as mine....

I'd suggest a new thread with this one, as it'll catch the eye more of some of the absolute experts here in the forum when it comes to the refurbishment, restoration and alteration of 'scopes. There are several very experienced and skilled folk here that will be able to give you some far more accurate advice than I.

Looks very promising so-far though. Interested to see how this one goes.

regards, John B.
John B

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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#51 Post by Radazz » Mon Dec 10, 2018 5:53 am

mnmyco wrote:I have a canon 60d and an ortholux with a trinocular head. I use this:

https://www.amazon.com/OMAX-Microscope- ... B01D914LT2
It works in any eyepiece so I do not need all the other attachments. It is a built in 2x lens.

mnmyco
This OMAX adapter works very well with the Nikon trinocular head. The shoulders of the adapter sit right on top of the photo tube, and this supports my EOS 7D much more securely than just the 23mm end that fits into the eyepiece.

Radazz
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mnmyco
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#52 Post by mnmyco » Mon Dec 10, 2018 2:20 pm

Radazz wrote:
mnmyco wrote:I have a canon 60d and an ortholux with a trinocular head. I use this:

https://www.amazon.com/OMAX-Microscope- ... B01D914LT2
It works in any eyepiece so I do not need all the other attachments. It is a built in 2x lens.

mnmyco
This OMAX adapter works very well with the Nikon trinocular head. The shoulders of the adapter sit right on top of the photo tube, and this supports my EOS 7D much more securely than just the 23mm end that fits into the eyepiece.

Radazz
I agree that a trinocular head is the way to go with this thing if, like you and me,a heavy camera is going to be used. It also eliminates the tendency of the camera to rotate if you have not achieved perfect balance, or do not have a set screw in to hold it in place.

mnmyco

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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#53 Post by Rorschach » Sat Mar 28, 2020 7:05 pm

I am getting to be quite the thread necormancer here, resurrecting old threads left and right.

However, please allow me to introduce another horse to this race:
Leitz_multi_eyepiece_adapter1.jpg
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It is mounted to a Leitz trinocular that I bought couple days ago. I should get it next week or so.
Leitz_multi_eyepiece_adapter2.jpg
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Currently it seems to have a 23mm barrel eyepiece which is apparently a photo eyepiece (the letter 'F' in red means that, no?). But I will want to replace that with a 30mm barrel widefield Periplan photo eyepiece that I managed to find.
Leitz_multi_eyepiece_adapter3.jpg
Leitz_multi_eyepiece_adapter3.jpg (57.55 KiB) Viewed 11438 times
Does anyone have experience of this adapter? I haven't seen them for sale very often.

Parcival
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#54 Post by Parcival » Wed Nov 25, 2020 9:25 pm

92111 wrote:
Mon Nov 26, 2018 11:22 am
Hi mrsonchus
how can i get right from left
Did you get an answer to that question?
You can unscrew this intermediate lensgroup using one of those 2 prong lens repair tools. What comes out is 37mm wide and has a 0.75mm thread.
I thought it was 37x1mm so ordered a 37x1->42x1 mm ring. A threaded 50mm (I would go for the 70mm version next time,) m42 extension tube and a 45x1->42x1 mm ring. Already had some m42 macrotubes.

Put the 37->42 mm ring onto the 0.32x lens (oops, it will catch, but don't use force or you'll damage the threads)
Screw this combination into the extension tube, with the markings pointing away from the camera. More see below.
Put the vario orthomat eyepiece in the 38mm port, screw on the 45->42 ring. Next a macro ring, this lenght isn't critical. Next the extension tube with the 0.32x inside. On top a m42 -> your camera mount, in my case sony e-mount.

Early measurement put the lens at about 80mm from the film plane however this lenght is critical and has to be adjusted to within 0.2mm. Doing so is fairly straight forward though. All you need is a stage micro meter and a plan objective.
Focus though the normal eyepieces. Take a look through lifeview on the camera. The centre of the image should be in focus at this point. However the image will be out of focus at the edge (use a low power plan objective on the scope and the zoom focus assist on the camera). At this stage it is advantageous that the 0.32x lens is slightly too high up the extension tube. By slightly unscrewing the adapter you're extending the lenght by 1mm/turn. Next screw the 0.32x lens down by the same amount. If you needed to insert 1cm, screw down the lens with 10 turns. Go back an forth though this until the edge is in focus. Don't adjust the focus on the scope.
In my situation the 0.32x ended up near the bottom of the 50mm tube, the macro tube at the bottom keeps the 0.32x into place because it is just touching it.
0.32x lens inside 50mm m42 extension tube
0.32x lens inside 50mm m42 extension tube
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The combination is now ready for use.
Btw that 45x1 is also found on the clamp that fits over the trioccular tube. Here with a periplan gw 4x high point.
127237082_10224137875343007_3677531366607768613_o.jpg
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The image stays in focus while turning the zoom ring on the eyepiece, and with different objectives.
Did try a setup without the 0.32x and the image would one be in focus at one setting of the eyepiece. Not acceptable.

Parcival
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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#55 Post by Parcival » Sun Nov 29, 2020 8:17 am

Here is a test shot on an ortholux of a water flea with a npl fluotar 25/160 0.17 and the vario orthomat occular set at 5x (1/1250s)
DSC04776-03-01.jpeg
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This one is with npl fluotar 10/170 0.17 the occular set at 5x (1/300s)
DSC04774-03.jpeg
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Light intensity was raised so that the shutter speed was above 1/250 to avoid shutter shock blur. Which is worst around 1/100s with my nex3. Pwm dimming was turned off to avoid striping and dimming was done using current limiting with a 10W cree neutral white led.

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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#56 Post by amhosib » Sun Mar 14, 2021 9:07 pm

Coming in on the tail-end of the vario orthomat setup.
I assume that the "vario" is essentially an afocal unit that requires the stepdown 0.32 lens to focus onto the camera plate.
That being the case, the length of "tube" between the vario and step down is not really a specific value.
However, this factor does have a significant effect on vignetting (or not) when coupled to the orthoplan scope.
Any value greater than 50mm gives problems.
My solution using the relay lens and its housing, was to locate within a machined sleeve of 30mm length, threaded at the bottom to fit the 45x1mm thread on the vario orthomat. The housing then rests on the upper surface of the vario and provides vignet free imaging throughout the zoom range with both full frame and apc cameras.
Whilst the optical physics may be questionable, it serves me well.
The 5 value equates to a 1.6x relay lens, ideal for APC sensors .
The value 8 is a nice one for full frame, equivalent to 2.5
I am amazed at how good the images are, and parfocality etc such that I will now get rid of my Wild/Leitz/Leica specific phototube set ups.
Since I had the vario for quite some time, I dont know why I did not sort earlier

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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#57 Post by amhosib » Fri Mar 19, 2021 9:26 am

Again, a late response.
You can also use a standard periplan gw eyepiece at both x6.3 and x10.
They are both 30mm tubes and so a straight fit.
Using a x6.3 gives a tube factor of x2, so is more suitable for APC cameras.
A better solution is to adapt a vario orthomat 11 lens and this can cover full frame and apc without any vignetting provided that your tube length is right.

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Re: Connecting Canon DSLR to Leitz trinocular head with all-Leitz components

#58 Post by Entomo » Sun Jan 09, 2022 11:04 am

Hello. I'm interested to know if anyone has used a setup with the Orthomat-W (https://www.ebay.it/itm/234103189242?ha ... Swyt9g~J9p). Can its optics be used in some way as the vario Orthomat? I'm trying to get the best setup (in terms of resolution and contrast for photographic)
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