Search found 4842 matches

by Pau
Sat Jun 19, 2021 3:08 am
Forum: Equipment Discussions
Topic: Article: Camera mounting for Olympus' modern BX range
Replies: 11
Views: 181

Re: Article: Camera mounting for Olympus' modern BX range

Thanks for the clarification!
by Pau
Sat Jun 19, 2021 2:15 am
Forum: Equipment Discussions
Topic: Article: Camera mounting for Olympus' modern BX range
Replies: 11
Views: 181

Re: Article: Camera mounting for Olympus' modern BX range

I will second the request for a few photos--I didn't realize you could cover full frame, though i suppose it makes sense since with the uw tube lens tbr image produced is good to the corners of aps-c, so you'd expect the usable image circle to be bigger even if there's a little degradation. Maybe l...
by Pau
Sat Jun 19, 2021 2:03 am
Forum: Equipment Discussions
Topic: Article: Camera mounting for Olympus' modern BX range
Replies: 11
Views: 181

Re: Article: Camera mounting for Olympus' modern BX range

The objective comparison will have to involve lower magnifications. At higher ones, it's just going to be optical enlargement, with no gained detail. ... Yes, a 10X or 20X plan apo are usually the more adequate (lower mag ones often deliver worse corners and as you suggest higher mag easily goes in...
by Pau
Fri Jun 18, 2021 8:08 am
Forum: Equipment Discussions
Topic: Article: Camera mounting for Olympus' modern BX range
Replies: 11
Views: 181

Re: Article: Camera mounting for Olympus' modern BX range

I would have showed the complete photos of the setup in, but I currently only have one camera. I suppose I can just use a toy one as an illustration, I still have that nanoblocks Nikon F. Yes, the toy Nikon F would look nice, phone photos of the actual camera also would do. What kind of picture tes...
by Pau
Fri Jun 18, 2021 7:30 am
Forum: Equipment Discussions
Topic: Article: Camera mounting for Olympus' modern BX range
Replies: 11
Views: 181

Re: Article: Camera mounting for Olympus' modern BX range

Hi Macro_Cosmos,

This is a very interesting article.
IMO it would be much improved if complemented with actual picture tests of your different approaches and also would be nice to see the complete setups mounted.
by Pau
Tue Jun 08, 2021 10:45 am
Forum: Equipment Discussions
Topic: Need help on putting a Microscope Objective on a zoom lens
Replies: 22
Views: 457

Re: Need help on putting a Microscope Objective on a zoom lens

Macron wrote:
Tue Jun 08, 2021 5:09 am
MODERATOR Remove all LINKS in this thread on https://www.chaachouet/
...
I've done it in all the posts quoting it. You can delete it or not at your original post according with your convenience
Pau
by Pau
Wed Jun 02, 2021 10:52 am
Forum: Equipment Discussions
Topic: Olympus BH-2 voltage adjustment?
Replies: 8
Views: 153

Re: Olympus BH-2 voltage adjustment?

(I'm not sure to really understand the question) I can see the the switch underneath the microscopes is labeled 100-115V, on the inside the switch is labeled something like 230-250V. Is there maybe just a different tapping on the transformer that can be used to change them to 230-245V? I can't say f...
by Pau
Tue May 25, 2021 11:59 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Fleeting fern fluorescence
Replies: 8
Views: 230

Re: Fleeting fern fluorescence

Lou, this is a very interesting thread, and an excellent stack,BTW After a bit more testing, I see that my home-made UV flashes are not only weak, they are also leaking lots of red (and IR?) light. My UV-pass filters, which I have mounted on the flashes, are the kind that also pass IR. This never ma...
by Pau
Sat May 22, 2021 11:59 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Fruit fly
Replies: 7
Views: 433

Re: Fruit fly

Really good image!

Is it Ceratitis capitata? (Known in Spain as "mosca del Mediterráneo" despite non being native of this area)
by Pau
Thu May 20, 2021 11:24 am
Forum: Nature Photography -- Macro and Close-up
Topic: Rhithrogena picteti (Mayfly)
Replies: 7
Views: 296

Re: Rhithrogena picteti (Mayfly)

Excellent pictures and sequence!

Welcome to the forum, Peter
by Pau
Mon May 17, 2021 10:16 am
Forum: Equipment Discussions
Topic: episcopic adapter
Replies: 6
Views: 270

Re: episcopic adapter

Beginning from the end, And one last question. Isn't this system extremely sensitive to loss of contrast and reflections in the image? Yes, it is, due to reflections both on the subject surface and on the objective lens elements. In many cases this kind of systems use crossed polarizers, a polarizer...
by Pau
Mon May 17, 2021 3:24 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Wandering into fluoroverse
Replies: 6
Views: 344

Re: Wandering into fluoroverse

Thanks for your comments, I love this kind of DIY frankenscopes and yours is really notable :D
Some time after completing this I found a rare, top quality original epi-fluoro head for my workhorse, Zetopan...
Would be nice to see it!
by Pau
Mon May 17, 2021 3:19 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Portulaca seeds
Replies: 15
Views: 848

Re: Portulaca seeds

Searching with some more patience I've also found few images and infos of Portulaca metallic looking seeds. All they point to other species than P. oleracea http://cellimagelibrary.org/images/41657 https://cdeep3m-viewer.crbs.ucsd.edu/image_viewer/CIL_41657 (Honorable mention at Olympus BioScapes 20...
by Pau
Sun May 16, 2021 2:42 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Wandering into fluoroverse
Replies: 6
Views: 344

Re: Wandering into fluoroverse

Very nice project! and results, BTW

Time ago I made a similar but more complex and much less brave device, now a bit improved with more and better UV LEDs and a big Leica light shield for the LEDs
viewtopic.php?p=201937#p201937