Search found 4746 matches

by Pau
Wed Dec 09, 2020 2:41 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Windows of Papilio ulysses wing scale
Replies: 17
Views: 3472

Re: Windows of Papilio ulysses wing scale

Wow, they are really curved!

Any chance of seeing a 100% crop test?
by Pau
Tue Dec 08, 2020 10:04 am
Forum: Equipment Discussions
Topic: Speccing out a jewelry photography setup
Replies: 6
Views: 1369

Re: Speccing out a jewelry photography setup

Just a very wild guess: Because 0.2-1x range is well covered with high quality by many non zoom camera macro lenses and (at least at the higher limit) you'd need to do focus stacking, I can imagine a system with two stepper motors: - one motor moves the camera + lens or subject stage for focusing wi...
by Pau
Sat Dec 05, 2020 11:13 am
Forum: Equipment Discussions
Topic: Setup for the Mitutoyo M Plan Apo 50x / 0.55
Replies: 13
Views: 1641

Re: Setup for the Mitutoyo M Plan Apo 50x / 0.55

Is your Raynox focused to infinite?

If both are used as they should the 50/0.80 will be sharper (and with higher resolution) than the 50/0.55
by Pau
Sat Dec 05, 2020 9:50 am
Forum: Equipment Discussions
Topic: Setup for the Mitutoyo M Plan Apo 50x / 0.55
Replies: 13
Views: 1641

Re: Setup for the Mitutoyo M Plan Apo 50x / 0.55

I tend to agree with Viktor

Few questions:
What's the observed issue? 0.55 is close enough to 0.42 to work fine in the same rig (and it never will be equally sharp at the sensor side)
what's the NA of your Oly?
Are both 50X meant for non glass covered subjects?
Are you able to return the Mitutoyo?
by Pau
Sat Dec 05, 2020 3:53 am
Forum: Equipment Discussions
Topic: Olympus 20x Objective
Replies: 5
Views: 1371

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: 917

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: 2952

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: 2952

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: 2952

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: 2715

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: 2560

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: 2003

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: 4
Views: 1292

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: 2617

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: 1135

Re: Twisty diatom and [perhaps] silicoflagellate

Any chance of making a stereo pair of the S. spiralis? It seems an excellent candidate!