Search found 5328 matches

by Pau
Sun Mar 17, 2024 3:42 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Wasp, Nuthin' Fancy
Replies: 6
Views: 114

Re: Wasp, Nuthin' Fancy

On second study, I'm not seeing a bi-color mandible at all. What's happening is that the mandible on the right side (critter's left) is tipped upward/inward at a very unusual angle, exposing a darker structure that would ordinarily be hidden behind it. To me it seems broken, isn't it? Anyway, a ver...
by Pau
Sat Mar 09, 2024 8:55 am
Forum: Equipment Discussions
Topic: Hoffman Modulation Contrast (HMC) for Leitz Orthoplan?
Replies: 6
Views: 928

Re: Hoffman Modulation Contrast (HMC) for Leitz Orthoplan?

In a similar way as Phase Contrast, HMC needs dedicated objectives with the modulation plate built in* (and the matched HMC plate at the condenser). Do you have such objectives? Oblique illumination techniques can deliver DIC like relief contrast with normal objectives, there are many threads and po...
by Pau
Wed Mar 06, 2024 2:24 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Galanthus
Replies: 12
Views: 297

Re: Galanthus

Very nice!
Still the texture of the flower pedals is breathtakingly beautiful, really looks like glittering snow/ice.
You're resolving the cells
by Pau
Sat Feb 24, 2024 11:40 am
Forum: Equipment Discussions
Topic: Advice Needed
Replies: 9
Views: 408

Re: Advice Needed

I must confess that I don't understand well your equipment nor your goals, maybe I'm too obtuse but I think that the info you provided is insufficient to give any useful advice. - Please post clear pictures of your microscope including the episcopic illuminator - Please provide more info about your ...
by Pau
Thu Feb 22, 2024 8:03 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: some scales
Replies: 120
Views: 5860

Re: some scales

=D> =D> =D>
this stereo is quite an experience!
by Pau
Sat Feb 17, 2024 10:27 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Debunking the high NA / coverslip correction myth
Replies: 73
Views: 31824

Re: Debunking the high NA / coverslip correction myth

Hi Macrero, May I ask again an unanswered question? - Is the objective refocused? (from the normal infinite design position, 1mm WD) If so, closer or farther of the sample? (my bet is that it is refocused closer although farther would be more desirable) How much? In your image I can see very little ...
by Pau
Thu Feb 15, 2024 5:20 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Debunking the high NA / coverslip correction myth
Replies: 73
Views: 31824

Re: Debunking the high NA / coverslip correction myth

How did you get a so tiny coverslip? Did you cut it?

it seems interesting!
by Pau
Thu Feb 15, 2024 4:41 am
Forum: Equipment Discussions
Topic: What are these?
Replies: 9
Views: 424

Re: What are these?

Without knowing anything ... teleconverters? Never mind - that would need a bayonet at the other end too. This is also my bet: teleconverters devoid of the rear male bajonet: at the second image we can see that they're acting like divergent lenses. Although teleconverters could work I've never seen...
by Pau
Fri Feb 02, 2024 3:40 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Kinoite on Apophyllite from the Christmas Mine
Replies: 5
Views: 449

Re: Kinoite on Apophyllite from the Christmas Mine

Guppy wrote:
Fri Feb 02, 2024 3:12 am
In the 3D view, the left and right are reversed 😊
Not really reversed, right image is at right side and left at left :D
But not good to see with the eyes crossed
by Pau
Fri Feb 02, 2024 1:20 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Kinoite on Apophyllite from the Christmas Mine
Replies: 5
Views: 449

Re: Kinoite on Apophyllite from the Christmas Mine

Nice sample and picture!

Please note that the stereo is parallel type (the one I prefer but not the more usual here that are to be seen with crossed eyes)
by Pau
Wed Jan 31, 2024 8:40 am
Forum: Equipment Discussions
Topic: microscope lens 10x
Replies: 37
Views: 1972

Re: microscope lens 10x

52mm (male) to RMS (female) adapter. In this case no need of two steps
This is pretty common at ebay and other sites

No idea about your zoom convenience. What camera do you use?
by Pau
Mon Jan 29, 2024 11:30 am
Forum: Equipment Discussions
Topic: microscope lens 10x
Replies: 37
Views: 1972

Re: microscope lens 10x

Yes, almost 100% for sure this is RMS, full corrected and computed for 180mm tube lens like the UIS series If so, the magnification on sensor with a 100mm lens focused to infinite would be about 5.55X. Being designed for 22mm FN, likely it would not cover the sensor with good quality up to the corne...
by Pau
Mon Jan 29, 2024 11:08 am
Forum: Equipment Discussions
Topic: ultra macro suggestions beyond 10x -- cheaper but ok objectives to play with? Sony aps-c
Replies: 36
Views: 1799

Re: ultra macro suggestions beyond 10x -- cheaper but ok objectives to play with? Sony aps-c

This is not the BD version. Infinity non-bd CF objectives have an RMS thread. The infinity CF BDs use an m27x0.75 thread. Normal LU plans use the same 25x0.75mm thread as other eclipse objectives, that should be fixed on the list. When reading the original post (I now see that it has been edited, a...
by Pau
Sun Jan 28, 2024 1:43 am
Forum: Equipment Discussions
Topic: ultra macro suggestions beyond 10x -- cheaper but ok objectives to play with? Sony aps-c
Replies: 36
Views: 1799

Re: ultra macro suggestions beyond 10x -- cheaper but ok objectives to play with? Sony aps-c

mkbn wrote:
Sat Jan 27, 2024 6:41 pm
...plus figure out whatever thread that objective has to 3d print an adapter for that to the 210mm lens.
From our FAQ: Screw Threads we use
viewtopic.php?p=73370#p73370
26mm x 0.75mm Nikon BD 210mm finite objectives, Nikon LU Infinites, and others