Search found 4682 matches

by Pau
Sat Dec 05, 2020 3:53 am
Forum: Equipment Discussions
Topic: Olympus 20x Objective
Replies: 1
Views: 29

Re: Olympus 20x Objective

Hi mgnax, welcome aboard!

I have the non BD version and I'm pretty happy with it

https://www.photomacrography.net/forum/ ... 06#p268906
by Pau
Thu Dec 03, 2020 3:41 am
Forum: Nature Photography -- Macro and Close-up
Topic: Some quick focus stacks of live tiger beetles
Replies: 2
Views: 74

Re: Some quick focus stacks of live tiger beetles

Excellent images, even more when knowing how fast are these animals

At the two first ones, are they fighting or trying to mate?
by Pau
Wed Dec 02, 2020 4:32 am
Forum: Equipment Discussions
Topic: Awakening a Leitz SM microscope
Replies: 22
Views: 322

Re: Awakening a Leitz SM microscope

... the results and the infinity possibilities of experimentation of the GNU appeal to me even more than oblique lighting. GNU? Gradient Universal Filter is oblique illumination although done in an imaginative and very useful way. Be aware of the oblique, phase, Rheinberg or DF plates must be place...
by Pau
Mon Nov 30, 2020 1:51 am
Forum: Equipment Discussions
Topic: Awakening a Leitz SM microscope
Replies: 22
Views: 322

Re: Awakening a Leitz SM microscope

I was referring to the dark field condenser, I suspected that it was an oil immersion condenser like Ichty clearly stated. It won't work at all without oil between the top condenser lens and the slide. If it is 1.2 -1.4 model this means that it will work with objectives with NA smaller than 1.2 (alt...
by Pau
Sun Nov 29, 2020 12:31 pm
Forum: Equipment Discussions
Topic: Awakening a Leitz SM microscope
Replies: 22
Views: 322

Re: Awakening a Leitz SM microscope

Hi Tonikon, welcome aboard! (Ichty was writing at the same time, but he's faster :D ) This is a very nice old microscope with top optics for its time. But it is about 65-70yrs old and, as you can understand, techniques have evolved quite a lot (just compare a 1955 car with a today one... they do bas...
by Pau
Thu Nov 26, 2020 1:23 am
Forum: Equipment Discussions
Topic: Adapting aps-C to nikon: a few different methods
Replies: 9
Views: 925

Re: Adapting aps-C to nikon: a few different methods

So, fun fact, this actually doesn't work on the smz-10. The nominal 0.6x reduction in the trinoc port means vignetting occurs with a viewing eyepiece combined with a 40mm lens on aps-c. It actually shrinks towards the middle of the zoom range and then reexpands at the end. In the mean time my optip...
by Pau
Wed Nov 25, 2020 2:27 am
Forum: Equipment Exchange
Topic: WTB : Mitutoyo M Plan Apo 20x
Replies: 16
Views: 357

Re: WTB : Mitutoyo M Plan Apo 20x

Que voulez-vous dire par attention particuliere ? Ol est delicat a utiliser ? Comme lentilles j'ai des Raynox Dcr 150 et 250. Vous avez une idée du prix moyen pour un LMPlanF N 20x Olympus ? I use the Olympus LMPlanFl 20x 0.40 (not the N UIS-2 version but the older UIS) and it is very good, I don't...
by Pau
Sat Nov 21, 2020 11:17 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Volcanic Glass
Replies: 8
Views: 390

Re: Volcanic Glass

Very nice subject and image.

I wonder if you could be able to show a deeper stack, a stereo pair also would be most enjoyable
by Pau
Sat Nov 21, 2020 11:14 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: What's in the name: filter puzzles
Replies: 1
Views: 217

Re: What's in the name: filter puzzles

Interesting post, this is a somewhat complex world, often unnecessarily arcane. So my question is this: is there in some dark corner of the net a "filter bible" that some tormented soul who has been fighting these same ghosts has compiled? I appreciate the sense of humor. I don't think that anyone h...
by Pau
Thu Nov 19, 2020 1:53 pm
Forum: Equipment Discussions
Topic: 40-60 X Objective lens
Replies: 11
Views: 773

Re: 40-60 X Objective lens

Higher resolution (0.65 NA) but much shorter working distance
by Pau
Wed Nov 18, 2020 10:05 am
Forum: Photography Through the Microscope
Topic: Twisty diatom and [perhaps] silicoflagellate
Replies: 2
Views: 242

Re: Twisty diatom and [perhaps] silicoflagellate

Any chance of making a stereo pair of the S. spiralis? It seems an excellent candidate!
by Pau
Wed Nov 18, 2020 2:14 am
Forum: Community Members and Friends
Topic: Got the plague
Replies: 7
Views: 364

Re: Got the plague

Hi Mike,
In most cases it can stop at this phase, I hope this will be yours.

Best wishes
by Pau
Fri Nov 13, 2020 4:01 am
Forum: Equipment Discussions
Topic: 40-60 X Objective lens
Replies: 11
Views: 773

Re: 40-60 X Objective lens

Hi, Could this be a good lens for our photography work https://www.ebay.com/itm/163710772822 It needs complementary aberration corrections done at a dedicated compensating eyepiece, so they only would be convenient with the adequate microscope, not for macro style work. More recent Olympus UIS and ...
by Pau
Fri Nov 13, 2020 3:45 am
Forum: Photography Through the Microscope
Topic: Polypodium sporangia fluorescence
Replies: 15
Views: 676

Re: Polypodium sporangia fluorescence

Thanks, maybe that's the key. Possibly the de-ionised water has a lower surface tension than tap water because of a lack of impurities, it certainly seems to flow more freely on a surface, which would help reduce bubbles. Dave It could be, although I lean to think more about the composition and str...
by Pau
Fri Nov 13, 2020 1:38 am
Forum: Equipment Exchange
Topic: Nikon 20x LWD
Replies: 4
Views: 429

Re: Nikon 20x LWD

.. The objective offered here is highly specialized: phase contrast and designed to look through 1.2 mm of cover glass. It is not suitable for use as an "extreme macro" objective with normal un-covered subjects Its typical use is with inverted microscopes to view through the bottom of a Petri dish ...