Optiphot with infinity objectives

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Saul
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Optiphot with infinity objectives

Post by Saul »

Attempt to use infinity objectives on the Optiphot:

With Sigma LSA

Image

Image

With Surplusshed 125mm achromat. I liked initial results with this tube lens (no more testing done yet), not sure how it compares with Raynox 250. It is compact & cheap, fits well to the printed part.
Photo with SS 125mm achromat:
http://www.photomacrography.net/forum/v ... 605#246605

Image

Image

Image
Last edited by Saul on Sun Apr 21, 2019 8:01 pm, edited 2 times in total.

JohnyM
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Post by JohnyM »

How do you handle tube lenght with 125mm and trinoc?

Saul
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Post by Saul »

JohnyM wrote:How do you handle tube lenght with 125mm and trinoc?
Luckily, with head (removed original tube, pls. see the photo), distance between objective & TL is ~5cm and between TL & sensor is ~125cm. Did not try yet to play with smaller distance or set up to the infinity. And, honestly, there is not too much room to play - if I'll make different 3d adapter, I could gain max 3mm. Unless I remove head, in this case I can go closer.

Saul
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Post by Saul »

One more setup:

Image

Image

Smokedaddy
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Post by Smokedaddy »

... interesting, nice job so far.

Saul
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Post by Saul »

Smokedaddy wrote:... interesting, nice job so far.
Thanks, James !

Pau
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Post by Pau »

Saul, this is again a most interesting project...and a well done one!

I'm very curious about your results, as I also have the Nikon CFI 20/0.75 and Sigma LSA, but the only adaptation I've done is putting the LSA on bellows in the place of the microscope head.

- Are the eyepieces parfocal with the camera?
- Does the objective really work as infinite corrected?*
- If you have another CFI 60 objective, is it parfocal with the 20/0.75?

* With your last setup outside the microscope frame, with the microscope head + LSA alone you would be able to see focused things at infinite like with binoculars, I guess

Thanks for sharing your projects
Pau

Ichthyophthirius
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Post by Ichthyophthirius »

Pau wrote: - Are the eyepieces parfocal with the camera?
- Does the objective really work as infinite corrected?
That would be interesting to find out. My Optiphot head has a system of negative and positive tube lenses https://www.photomacrography.net/forum/ ... p?p=206784

It would be interesting to know how this adds up.

Regards, Ichty

Saul
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Post by Saul »

Pau wrote:Saul, this is again a most interesting project...and a well done one!
Thanks Pau !
I'm very curious about your results, as I also have the Nikon CFI 20/0.75 and Sigma LSA, but the only adaptation I've done is putting the LSA on bellows in the place of the microscope head.

- Are the eyepieces parfocal with the camera?
No. If honestly - I did not try to get parfocality, but it could be done (it is almost there)
- Does the objective really work as infinite corrected?*
Yes. Tested separately. And distances matching also
- If you have another CFI 60 objective, is it parfocal with the 20/0.75?
I have Nikon CF Plan 20x 0.46. And it is not parfocal with 20/0.75. Did not try with Mitu 20x .

Pau
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Post by Pau »

Thanks Saul,
- Are the eyepieces parfocal with the camera?


No. If honestly - I did not try to get parfocality, but it could be done (it is almost there)
Would be interesting to try it...and later to inform us :D
- If you have another CFI 60 objective, is it parfocal with the 20/0.75?
I have Nikon CF Plan 20x 0.46. And it is not parfocal with 20/0.75. Did not try with Mitu 20x .
Is your CF plan 20X old style RMS 45mm? If so it can't be parfocal at least without a 15mm extension ring, the same but opposite with the Mitutoyo that is much longer (but this is trivial)
Pau

JH
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Post by JH »

Saul wrote:One more setup:

Image
Very interesting, thanks for posting. I have very little experience with 3D printing. What material do you recommend if I want to print a reliable part for this type of use?

Best regards
Jörgen Hellberg
Jörgen Hellberg, my webbsite www.hellberg.photo

Saul
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Post by Saul »

Pau wrote:...Is your CF plan 20X old style RMS 45mm? If so it can't be parfocal at least without a 15mm extension ring, the same but opposite with the Mitutoyo that is much longer (but this is trivial)
It is 27mm, first couple photos of the post.

Saul
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Post by Saul »

JH wrote:...Very interesting, thanks for posting. I have very little experience with 3D printing. What material do you recommend if I want to print a reliable part for this type of use?...
Hi, Jörgen !
Mostly I'm using PLA+, sometimes (if I need stronger part) - PETG (but it is shiny)

JH
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Post by JH »

Thanks Saul
It is always interesting to follow your posts.
Best regards
Jörgen Hellberg
Jörgen Hellberg, my webbsite www.hellberg.photo

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