Best M43 lens for UV transmission?

4Paul

Mu-43 Regular
Joined
Dec 12, 2014
Messages
152
Location
Switzerland
Real Name
Paul Keller
Having had an OM-D M-1/i converted to UV/IR 'full spectrum', I am attempting to image the 'UV-light guides' for insects on various flowers with the Kolari UV-Bandpass and Zeiss UG-type filters. By design, modern multi-element lenses are not UV-friendly, hence the zoom variety is out. Suggestions for M43-mount lenses (or adaptables) that have proven useful/ideal for UV photography would be most welcome.
Thanks in advance.
Paul, searching the invisible
 

mawz

Mu-43 Veteran
Joined
Mar 2, 2013
Messages
250
Your best bet is probably going to be the Chinese manual lenses. They tend to have fairly simple optical designs and poor coatings, which removes the two main UV-blockers.
 

dlafon

Mu-43 Veteran
Joined
Oct 29, 2017
Messages
301
Location
Mukwonago, WI
Hello,

Here is a site that you may find helpful, lots of tests and comparisons of UV lenses (go to the home page, click photography, and browse all the great articles). http://www.savazzi.net/photography/uv.htm

Also check out this site... https://www.ultravioletphotography.com/content/

I have had some luck with longer exposures in UV through the 14-42mm kit zooms recently and an old 35mm Soligor type manual focus lens from the film era.

Cheers,
Daniel
 

dbateman

Mu-43 Regular
Joined
Feb 17, 2010
Messages
27
The best auto focus lens is the Canon 40mm STM f2.8 on an adapter to m43rds. That lens is amazing and works for all UVA to high IR. Was able to get dark water with 990bp filter even.

For native m43rds lens the old Sigma Art smooth barrel lenses are great. The 30mm f2.8 lens being best, then the 19mm f2.8. I haven't personally tested the 60mm. But its reported as good.

Then the Olympus 30mm f3.5 macro lens is good.
Lastly the Olympus 14-42mm R2 lens is ok in UV.

I haven't gotten around to testing the Panasonic 20mm lens yet. But it might also work.

Depending how deep into UV you need, the Sigma 10-20mm in EF mount also works with an adapter.

Ultraviolet photography forum is the best place for questions.
 

4Paul

Mu-43 Regular
Joined
Dec 12, 2014
Messages
152
Location
Switzerland
Real Name
Paul Keller
Thank you all for your most helpful suggestions. I've started with an old Lithagon 3.5/35mm (in an Exacta mount), but field work (pardon the exaggeration) with manual focus was too much hit-and-miss. I've had beginners luck with the Oly 3.5/30mm Macro and a flash unit with an uncoated tube from the old film days. For interests sake, here the spectra of an uncoated and a coated flash tube. The UV output of the uncoated version goes well below the measurement range of my spectrometer; it covered the narrow-band 365nm filter with ease.
P7057515.JPG
Subscribe to see EXIF info for this image (if available)
P7057516.JPG
Subscribe to see EXIF info for this image (if available)
 

Latest threads

Links on this page may be to our affiliates. Sales through affiliate links may benefit this site.
Mu-43 is a fan site and not associated with Olympus, Panasonic, or other manufacturers mentioned on this site.
Forum post reactions by Twemoji: https://github.com/twitter/twemoji
Forum GIFs powered by GIPHY: https://giphy.com/
Copyright © Amin Forums, LLC
Top Bottom