Search found 4579 matches

by Lou Jost
Fri Dec 11, 2015 8:49 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Tanzania part XXVIII
Replies: 12
Views: 4390

Nothing is known about the fluorescence of the species I work with. That's why it is so interesting to me.
by Lou Jost
Fri Dec 11, 2015 6:53 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Photo of Ploum
Replies: 205
Views: 101331

These are very beautiful. I especially like your "Realgar, Stibnite". Maybe because nearly the whole frame is full of interesting textures and colors.

When I was a little kid I had a tiny little piece of realgar/orpiment. It was one of my most beautiful possessions at the time.
by Lou Jost
Fri Dec 11, 2015 6:33 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Tanzania part XXVIII
Replies: 12
Views: 4390

Paul, thanks very much for that link. I will buy one right now. I am very curious about the possibility of fluorescence in orchids, especially those whose flowers imitate arthropods. I am glad you didn't let your bad experiences spoil the country. It is hard to learn "street smarts", but one does le...
by Lou Jost
Fri Dec 11, 2015 4:54 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: camera tethering + Stackshot ?
Replies: 17
Views: 3195

Aww, that would be too easy....Yes, that's a good suggestion.
by Lou Jost
Wed Dec 09, 2015 7:37 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: camera tethering + Stackshot ?
Replies: 17
Views: 3195

Hi Chris, yes, that's the cause of the problem. The ControlMyNikon manual blames the delay on the number of images on the card. However, I used the same camera with about the same number of images with a free program called digiCamControl, and I do not recall having this problem. That's why I think ...
by Lou Jost
Wed Dec 09, 2015 6:46 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: camera tethering + Stackshot ?
Replies: 17
Views: 3195

I'm a beginner who has been trying various tethering programs. ControlMyNikon is also the one I ended up keeping. It's only problem is the unnecessary, potentially very long time it takes to establish a connection between camera and computer. The delay is so long that it is easy to think the program...
by Lou Jost
Tue Dec 08, 2015 9:07 pm
Forum: Photography Through the Microscope
Topic: Water drops on Salvinia
Replies: 15
Views: 1772

Absolutely brilliant! Very creative and elegantly executed.
by Lou Jost
Tue Dec 08, 2015 4:59 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Lighting for macro photography of fern gametophytes
Replies: 600
Views: 117697

Maybe gelatin would work for you. All I can say is that even solid marble is non-rigid when doing high magnification microscopy, so I am skeptical about gelatin. But what is rigid and what is not rigid depends on the magnification and the frequency of the environmental vibrations, so I guess there's...
by Lou Jost
Tue Dec 08, 2015 2:19 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Lighting for macro photography of fern gametophytes
Replies: 600
Views: 117697

Maybe I am still not understanding something. Gelatine, at least here, wiggles. It is not rigid. It is like a soft spring. It could even amplify vibration movement.
by Lou Jost
Tue Dec 08, 2015 10:35 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Lighting for macro photography of fern gametophytes
Replies: 600
Views: 117697

Oh. If gelatine there means the same thing as it does in the US or Ecuador, that would seem to be about the worst possible thing if you have environmental vibrations.... Camera and subject need to be connected by an absolutely rigid assembly. The whole rigid camera+subject assembly should be put on ...
by Lou Jost
Tue Dec 08, 2015 8:31 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Lighting for macro photography of fern gametophytes
Replies: 600
Views: 117697

Do you mean you want to completely embed it in the gelatine? If you are going to go to that extreme, better to use a viscous liquid like glycerine, which should damp most vibrations if you let it sit briefly after each movement. But maybe I misunderstand you.
by Lou Jost
Sun Dec 06, 2015 1:19 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Lighting for macro photography of fern gametophytes
Replies: 600
Views: 117697

No, attaching the microscope objective to the lens is trivial and cheap!!!! There's a ton of stuff on this forum showing exactly what you need.

Edit-this comment was aimed at your second-last comment, not your last one, which crossed mine in cyberspace.
by Lou Jost
Sun Dec 06, 2015 8:57 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Lighting for macro photography of fern gametophytes
Replies: 600
Views: 117697

All I know is that Canon makes its SDK library available and people have written programs to run Canons. I am sure people here know more about this than I do. For examples of the literature see: https://www.didp.canon-europa.com/ http://www.codeproject.com/Articles/688276/Canon-EDSDK-Tutorial-in-Csh...
by Lou Jost
Sun Dec 06, 2015 7:03 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Lighting for macro photography of fern gametophytes
Replies: 600
Views: 117697

I'm a beginner so take this with a grain of salt. Since you are a programmer, you can probably write a script for your Canon to step-focus and do everything automatically, without having to move camera or subject. Apparently you pay a small price in image quality, but I think the image quality diffe...
by Lou Jost
Sat Dec 05, 2015 5:26 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Lighting for macro photography of fern gametophytes
Replies: 600
Views: 117697

It would be worth trying the stretchy men just for fun. I can imagine how your setup will look...a sandwich of granite slabs with heads and arms of stretchy men sticking out from the edges--it would be unique!