For starters, see the article at https://zerenesystems.com/cms/stacker/docs/troubleshooting/ringversusrail .
Then feel free to discuss further here. I wrote that article, so I'll be happy to expand or clarify as needed.
--Rik
Search found 18927 matches
- Wed May 25, 2022 11:32 am
- Forum: Beginners Macro
- Topic: Rail Focus or Lens Focus
- Replies: 2
- Views: 35
- Tue May 24, 2022 11:00 am
- Forum: Equipment Exchange
- Topic: FS:(europe) Mitutoyo plan apo 20x 0.42
- Replies: 10
- Views: 719
Re: FS:(europe) Mitutoyo plan apo 20x 0.42
I agree that people may see the plastic wrap as scratches. I certainly did.
But be aware, the link in your posting is broken so it leads only to an error page, not an explanation.
--Rik
But be aware, the link in your posting is broken so it leads only to an error page, not an explanation.
--Rik
- Sun May 22, 2022 10:27 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Scales on the wing of Urania leilus
- Replies: 6
- Views: 144
Re: Scales on the wing of Urania leilus
I use the mjkzz Qool rail with IR controller. I use a longer exposure (0.6-1s) and set the speedlichts to flash after 0.3s to eliminate vibration from the rear curtain. Ah, thanks. So then, the technique described at https://www.mjkzz.com/single-post/2018/05/08/flashes-continuous-lights-and-flash-t...
- Sun May 22, 2022 3:42 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Scales on the wing of Urania leilus
- Replies: 6
- Views: 144
Re: Scales on the wing of Urania leilus
Bart, welcome to image posting.* These images are very nice -- great light especially on the shiniest scales! I am puzzled, what does "mid curtain flash" mean? --Rik *(One minor niggle: the posting guidelines indicate a limit of 6 images per day in the image galleries. We do make exceptions to that ...
- Fri May 20, 2022 8:45 pm
- Forum: Photography Through the Microscope
- Topic: ID help for fugitive from Stentor Coeruleus
- Replies: 3
- Views: 141
Re: ID help for fugitive from Stentor Coeruleus
Nice video!
This is not my area of expertise, but I wonder if the fugitives are things that the Stentor sucked in, could not digest, and is now getting rid of.
See https://www.microbehunter.com/microscop ... 3&p=110469 .
I have no clue about ID on the fugitives.
--Rik
This is not my area of expertise, but I wonder if the fugitives are things that the Stentor sucked in, could not digest, and is now getting rid of.
See https://www.microbehunter.com/microscop ... 3&p=110469 .
I have no clue about ID on the fugitives.
--Rik
- Fri May 20, 2022 6:51 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: rare male of Encarsia formosa (parasitic wasp of whiteflies)
- Replies: 0
- Views: 117
rare male of Encarsia formosa (parasitic wasp of whiteflies)
In earlier posts ( HERE and HERE ), I have shown and talked about the whiteflies and parasitic wasps that took up residence on a basil plant in my kitchen. The wasps are Encarsia formosa , or something very much like them. These critters have a very lopsided distribution of genders in their populati...
- Fri May 20, 2022 5:09 pm
- Forum: General Discussion Forum and Community Announcements
- Topic: Andy Murray talks about photographing springtails in the field
- Replies: 0
- Views: 46
Andy Murray talks about photographing springtails in the field
Visit https://www.chaosofdelight.org/ and you will be instantly introduced to the world as photographed by Andy Murray, up close and personal with springtails going about their daily lives. Visit https://youtu.be/0DShg_4Hlkk?t=1 , and you can listen to Andy talk about why and how he shoots those pho...
- Fri May 20, 2022 4:24 pm
- Forum: Equipment Discussions
- Topic: lighting cage with CAMVATE clamps and arms
- Replies: 5
- Views: 415
Re: lighting cage with CAMVATE clamps and arms
Thanks for the interest and feedback. I hasten to point out that I have cribbed shamelessly off other people's ideas, particular those videos by Allan. The use of stiffer material for the cage is a good option to pursue. I will be very interested to see what you come up with, and I'm quite sure Alla...
- Fri May 20, 2022 10:04 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Arum maculatum
- Replies: 9
- Views: 210
Re: Arum maculatum
My Chrome browser does such text translations also. This happens automatically when the whole page is in foreign language. In the case here with veed.io, the translation in browser does not work because the voice-to-text German subtitles are encoded in some strange way that prevents the browser from...
- Thu May 19, 2022 7:47 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Hexamethyldisilazane (HMDS) -- a drying aid
- Replies: 6
- Views: 872
Re: Hexamethyldisilazane (HMDS) -- a drying aid
The previously mentioned flying aphids came out so badly that I never bothered photographing them. But more recently, I had another occasion to try drying with HMDS, this time with some small wasps. These are the parasites on whiteflies that I have posted about HERE and HERE . These subjects are tin...
- Thu May 19, 2022 6:45 pm
- Forum: General Discussion Forum and Community Announcements
- Topic: ptychographic X-ray laminography
- Replies: 0
- Views: 39
ptychographic X-ray laminography
The May 2022 issue of IEEE Spectrum describes an imaging technique that was new to me: "ptychographic X-ray laminography". The entire article appears to be publicly available: https://spectrum.ieee.org/chip-x-ray . Quick summary is that the authors are using a form of scanning X-ray diffraction, to ...
- Thu May 19, 2022 5:27 pm
- Forum: Photography Through the Microscope
- Topic: A Choanoflagellate and Lacrymaria
- Replies: 3
- Views: 182
Re: A Choanoflagellate and Lacrymaria
These are lovely!
--Rik
--Rik
- Thu May 19, 2022 5:03 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Arum maculatum
- Replies: 9
- Views: 210
Re: Arum maculatum
Got it, thanks. There's a nice video at 1:50-2:00 of https://av.tib.eu/media/11548 . As an experiment, I downloaded the video, extracted the audio, and uploaded that to veed.io to generate subtitles from the audio. For the indicated section, veed.io gave: Die Antheren der männlichen Blüten platzen b...
- Thu May 19, 2022 11:55 am
- Forum: Equipment Discussions
- Topic: Edmund Optics article on Reflective Objectives
- Replies: 21
- Views: 316
Re: Edmund Optics article on Reflective Objectives
...specific spacing and diameter of the entrance hole... With the nosepiece it is much better as I remember. Mine did not have a nosepiece, but I experimented with adding a conical hood. That worked sort of OK in terms of controlling the stray light, but only when the hood extended so far from the ...
- Thu May 19, 2022 11:27 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: perspective on O-ring (images added)
- Replies: 5
- Views: 192
Re: perspective on O-ring (images added)
...you told that there are no burs or sharp corners. Is the a cross bore (without chamfers) where the O-Ring has to be pussed over? Those cutting lines would fit perfectly for that. Not quite right -- I said only that I found no burrs. I did not specifically check for sharp corners without burrs, b...