Hi folks
No idea what this lens was intended for, picked it up cheap on ebay.
Some stacked shots I made with my EOS 650D. I used RawTherapee, Zerenestacker and Photoshop. The results are okay, not as sharp as I'd like, some diffuse glow. Maybe It's my fault the results are not so sharp and I used it outside it's intended magnification range?
Flies with Olympus 22.5mm f3.5
Moderators: rjlittlefield, ChrisR, Chris S., Pau
-
- Posts: 4
- Joined: Fri Sep 11, 2020 3:35 pm
- Location: UK
Re: Flies with Olympus 22.5mm f3.5
I seem to remember seeing one of these or like this on the end of an optical cable for industrial inspection.
BR
John
BR
John
-
- Posts: 4
- Joined: Fri Sep 11, 2020 3:35 pm
- Location: UK
Re: Flies with Olympus 22.5mm f3.5
Hi John
Could well be. My guess was microfiche but it's only a guess.
I am curious if it can perform better, but not having any info on it, I have no idea what magnification it is optimised for.
Could well be. My guess was microfiche but it's only a guess.
I am curious if it can perform better, but not having any info on it, I have no idea what magnification it is optimised for.
Re: Flies with Olympus 22.5mm f3.5
I have an almost identical Olympus 35mm f/4.5. I was not impressed with it.
- rjlittlefield
- Site Admin
- Posts: 23562
- Joined: Tue Aug 01, 2006 8:34 am
- Location: Richland, Washington State, USA
- Contact:
Re: Flies with Olympus 22.5mm f3.5
That's an unusual level of precision on the focal length: 22.25 mm. Seems like it must have been made for some very specific purpose.
My wild guess would be that it's a microfilm/microfiche lens, optimized for looking through thick glass.
--Rik
My wild guess would be that it's a microfilm/microfiche lens, optimized for looking through thick glass.
--Rik
Re: Flies with Olympus 22.5mm f3.5
That would be very interesting and useful!optimized for looking through thick glass.
- rjlittlefield
- Site Admin
- Posts: 23562
- Joined: Tue Aug 01, 2006 8:34 am
- Location: Richland, Washington State, USA
- Contact:
Re: Flies with Olympus 22.5mm f3.5
Well, it's just a wild guess. But I have used microfilm/microfiche readers that had carrier plates maybe 5 mm thick, and the text on screen looked good everywhere.
Working distance on those readers was pretty short, unfortunately.
--Rik
Re: Flies with Olympus 22.5mm f3.5
I hope you are right, that would be really useful for shooting through liquid.