Search found 5981 matches
- Wed Apr 17, 2024 6:22 pm
- Forum: Equipment Discussions
- Topic: EL Nikkor+Fujifilm GFX
- Replies: 44
- Views: 971
Re: EL Nikkor+Fujifilm GFX
Chris, that's very useful info about the Mejiro Gnossen FL0530. I'm surprised to see that the range of corrected wavelengths does not include violet or deep red. This suggests there might be CA in some subjects. Have you seen any? Also, can you recommend a vendor? Chendata is sold out. This is the ...
- Wed Apr 17, 2024 2:51 pm
- Forum: Equipment Discussions
- Topic: EL Nikkor+Fujifilm GFX
- Replies: 44
- Views: 971
Re: EL Nikkor+Fujifilm GFX
Chris, that's very useful info about the Mejiro Gnossen FL0530. I'm surprised to see that the range of corrected wavelengths does not include violet or deep red. This suggests there might be CA in some subjects. Have you seen any?
Also, can you recommend a vendor? Chendata is sold out.
Also, can you recommend a vendor? Chendata is sold out.
- Tue Apr 16, 2024 6:43 am
- Forum: Equipment Discussions
- Topic: Exactly how fragile are the mitutoyo 10x 20x etc, or is it an enigma?
- Replies: 30
- Views: 839
Re: Exactly how fragile are the mitutoyo 10x 20x etc, or is it an enigma?
"I don't think a 50x HR 0.75 NA is going to fall (gently?) from the sky at me anytime for an unreal price :D" Well, you already have something better than that (same NA and with a FOV more than twice as large), and for $100! The 20x/0.75s are awesome but there is some difference between 1mm of work...
- Mon Apr 15, 2024 7:34 pm
- Forum: Equipment Discussions
- Topic: Exactly how fragile are the mitutoyo 10x 20x etc, or is it an enigma?
- Replies: 30
- Views: 839
Re: Exactly how fragile are the mitutoyo 10x 20x etc, or is it an enigma?
"I don't think a 50x HR 0.75 NA is going to fall (gently?) from the sky at me anytime for an unreal price "
Well, you already have something better than that (same NA and with a FOV more than twice as large), and for $100!
http://www.photomacrography.net/forum/v ... 07#p295907
Well, you already have something better than that (same NA and with a FOV more than twice as large), and for $100!
http://www.photomacrography.net/forum/v ... 07#p295907
- Mon Apr 15, 2024 11:20 am
- Forum: Equipment Discussions
- Topic: Panasonic 45-175 mm as tube lens / focus bracketing
- Replies: 20
- Views: 483
Re: Panasonic 45-175 mm as tube lens / focus bracketing
Remember that the objective is stopping down the lens very much more than the camera thinks, and so the automatically calculated step size, based on the chosen step setting and the fully open tube lens aperture, is much too small for the actual optical arrangement.
- Sun Apr 14, 2024 7:07 pm
- Forum: Equipment Discussions
- Topic: Panasonic 45-175 mm as tube lens / focus bracketing
- Replies: 20
- Views: 483
Re: Panasonic 45-175 mm as tube lens / focus bracketing
I hope you have a lot of fun with it. I predict you will soon need to buy some new hard drives jejeje.
- Sun Apr 14, 2024 7:03 am
- Forum: Equipment Discussions
- Topic: Exactly how fragile are the mitutoyo 10x 20x etc, or is it an enigma?
- Replies: 30
- Views: 839
Re: Exactly how fragile are the mitutoyo 10x 20x etc, or is it an enigma?
Chris S., this is great data, nice to have real numbers. And what a generous help you have been giving to forum members by vetting these objectives!
- Sat Apr 13, 2024 8:21 pm
- Forum: Equipment Discussions
- Topic: Exactly how fragile are the mitutoyo 10x 20x etc, or is it an enigma?
- Replies: 30
- Views: 839
Re: Exactly how fragile are the mitutoyo 10x 20x etc, or is it an enigma?
Was it this one Lou? https://www.photomacrography.net/forum/viewtopic.php?t=41684#p262323 That one, and other diatom shots like it were done with a ,50x Mitty pushed down to 33x on a 135mm tube lens. Cheers Maybe that was it. That's a lovely shot, similar to the one I am thinking of. But I thought ...
- Sat Apr 13, 2024 2:53 pm
- Forum: Equipment Discussions
- Topic: Lasertec 5x 0.25 HR Objective on eBay
- Replies: 48
- Views: 6257
Re: Lasertec 5x 0.25 HR Objective on eBay
Sometimes there are reasonably priced 10x 0.50 objectives on eBay. I found and bought an affordable Nikon 10x 0.50 S Fluor with a working distance of 1.2mm.
- Sat Apr 13, 2024 2:37 pm
- Forum: Equipment Discussions
- Topic: Exactly how fragile are the mitutoyo 10x 20x etc, or is it an enigma?
- Replies: 30
- Views: 839
Re: Exactly how fragile are the mitutoyo 10x 20x etc, or is it an enigma?
Steve, a long time ago I thought you had posted here a reflected-light photo of a singe diatom on edge, on a glass coverslip or slide, beautifully lit like a macro, using a 100x Mitu?? My recollection could be bad of course. I can still see the photo in my head, though....it was really nice.
- Sat Apr 13, 2024 11:13 am
- Forum: Equipment Discussions
- Topic: Exactly how fragile are the mitutoyo 10x 20x etc, or is it an enigma?
- Replies: 30
- Views: 839
Re: Exactly how fragile are the mitutoyo 10x 20x etc, or is it an enigma?
Well, I dropped one from waist height onto a bare concrete floor. I think it is de-centered now, but still produces pretty good images overall.
- Fri Apr 12, 2024 6:00 am
- Forum: Equipment Discussions
- Topic: Panasonic 45-175 mm as tube lens / focus bracketing
- Replies: 20
- Views: 483
Re: Panasonic 45-175 mm as tube lens / focus bracketing
Great additional information! Yes, the main constraint is the amount of focus throw available. The 45-175mm lens is particularly good for that, relative to other lenses I've tested. I have not tested most of the other zooms mentioned. And yes, this method does produce incredibly fast stacks, and is ...
- Thu Apr 11, 2024 6:38 pm
- Forum: Equipment Discussions
- Topic: KEYENCE VH-Z75 what is it?
- Replies: 4
- Views: 180
Re: KEYENCE VH-Z75 what is it?
Looks expensive and interesting.
- Thu Apr 11, 2024 6:36 pm
- Forum: Equipment Discussions
- Topic: Panasonic 45-175 mm as tube lens / focus bracketing
- Replies: 20
- Views: 483
Re: Panasonic 45-175 mm as tube lens / focus bracketing
I have noticed a recent change in behavior of notifications from the forum. Nowadays I do not get a notification of new replies to a post I have responded to. Maybe some flag got cleared by me accidentally?? It's also possible that some conflict has developed between the email servers used by you a...
- Thu Apr 11, 2024 1:59 pm
- Forum: Equipment Discussions
- Topic: Panasonic 45-175 mm as tube lens / focus bracketing
- Replies: 20
- Views: 483
Re: Panasonic 45-175 mm as tube lens / focus bracketing
Björn, Regarding your PM, see FAQ: There's a PM stuck in my Outbox. What's wrong? Most likely Lou is just away from his computer for a while and will see your message when he gets back. As for focus bracketing, I have no experience with that exact lens but perhaps some general info will help. A goo...