mountain swallowtail

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rjlittlefield
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Re: mountain swallowtail

Post by rjlittlefield »

Medwar wrote:
Mon Jun 14, 2021 1:22 pm
rjlittlefield wrote:
Fri Jan 08, 2021 5:34 pm
At 50X NA 0.55, you're running at effective aperture f/45 (=50/(2*0.55)). Even for extreme blue wavelength 400 nm, that still puts the diffraction cutoff frequency at 18.2 microns per cycle. Against that, your camera has a sensor that is 3.2 microns per pixel.
It will be 25x NA 0.55, because of the 100mm TL, so it's F/27, rigth? Still in the diffration territory for this sensor though.
Good catch. Yes, the one with 100mm TL will be f/27.

--Rik

Adalbert
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Joined: Mon Nov 30, 2015 1:09 pm

Re: mountain swallowtail

Post by Adalbert »

Hello Pawel,
I have just tested some options/settings and compared the results 😊.
Best, ADi

Adalbert
Posts: 1424
Joined: Mon Nov 30, 2015 1:09 pm

Re: mountain swallowtail

Post by Adalbert »

Hi Medwar,
One question - with Canon 100mm L, do all your Mitutoyos fully cover an APS-C?
5x, 10x, 20x, 50x yes but 2x not
Best, ADi

klevin
Posts: 78
Joined: Fri Dec 14, 2012 5:28 pm
Location: SW New Hampshire, USA

Re: mountain swallowtail

Post by klevin »

Thanks for the link to your FB page with the equipment pictures. Thought provoking and idea provoking.

Adalbert
Posts: 1424
Joined: Mon Nov 30, 2015 1:09 pm

Re: mountain swallowtail

Post by Adalbert »

Hello Klevin,
But you can find everything in this forum (not only in FB)
E.g.
viewtopic.php?p=245808#p245808
viewtopic.php?p=186841#p186841
Best, ADi

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