Search found 645 matches

by Scarodactyl
Fri May 14, 2021 7:47 pm
Forum: Equipment Discussions
Topic: Epi DIC on Mitutoyos with a Nikon slider
Replies: 4
Views: 279

Re: Epi DIC on Mitutoyos with a Nikon slider

Whoops, sorry I forgot to actually respond here! Here's a picture of the whole thing, taken from a low angle so you don't see my super cluttered table. https://i.imgur.com/k8tgNZh.png Assembling the illuminator was its own whole thing. I'm using a Nikon infinity optiphot illuminator, but it came off...
by Scarodactyl
Fri May 14, 2021 7:23 pm
Forum: Photography Through the Microscope
Topic: DIC versus other forms of Microscopy
Replies: 7
Views: 101

Re: DIC versus other forms of Microscopy

This is just a single image but I was pretty impressed with it http://www.photomacrography.net/forum/viewtopic.php?p=269633#p269633 (the onion skin is good too but looks more obliquey to me) Hard to say until you have a wider range of samples photographed, but I'm definitely ordering some polycarbon...
by Scarodactyl
Fri May 14, 2021 2:41 pm
Forum: Photography Through the Microscope
Topic: DIC versus other forms of Microscopy
Replies: 7
Views: 101

Re: DIC versus other forms of Microscopy

That was a nice read and the images are fantastic. I wonder if Sanderson DIC is going to end up being a big deal. I've only seen Saul's sample images but they looked extremely promising, and it should be much cheaper than Nomarski. Epi DIC systems can be surprisingly cheap, and from time to time I w...
by Scarodactyl
Thu May 13, 2021 4:26 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Can we discuss perspective and perception of scale?
Replies: 3
Views: 159

Re: Can we discuss perspective and perception of scale?

The coarseness of thr surface texture is giving some information here. Of course it's too easy for us to cheat since we recognize little things like where the focus stack ends or the unusual glow/reflections you tend to see in high mag scenes--these things are less likely for a random viewer to noti...
by Scarodactyl
Wed May 12, 2021 3:48 pm
Forum: Equipment Discussions
Topic: are 3d resin printers good for us?
Replies: 6
Views: 262

Re: are 3d resin printers good for us?

If I understand right PETG and ABS are pretty similar on the deformation front (ie, not a particular issue). PLA is the main offender there. It's definitely easy to adapt these scanner lenses with 3d printed parts. I printed this sleeve to press fit the lens into the inside (ended up perfect, takes ...
by Scarodactyl
Wed May 12, 2021 9:52 am
Forum: Equipment Discussions
Topic: are 3d resin printers good for us?
Replies: 6
Views: 262

Re: are 3d resin printers good for us?

Rms and m42 are not really a problem for an fdm printer, though female threads need a little tweaking to compensate for them printing a little tighter than specced. Resin printers do have much finer detail but the amount of post processing and lower overall strength make them a bit less appealing wh...
by Scarodactyl
Mon May 10, 2021 4:45 pm
Forum: Equipment Discussions
Topic: Shucked objective--anyone maybe recognize the make?
Replies: 0
Views: 155

Shucked objective--anyone maybe recognize the make?

I recently made an offer on this objective on eBay because it was already fairly cheap, and I could tell it had a longer-than-45mm parfocal length, meaning it was likely a relatively newer design. Objectives are often shucked for incorporation into third party equipment, either to fit better or remo...
by Scarodactyl
Mon May 10, 2021 1:50 am
Forum: Photography Through the Microscope
Topic: Polarized live Diatom (Pleurosigma sp)
Replies: 4
Views: 160

Re: Polarized live Diatom

Well, painful as the workflow might be the results are hard to argue with. Great work!
by Scarodactyl
Tue May 04, 2021 6:05 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Haze?
Replies: 23
Views: 578

Re: Haze?

rjlittlefield wrote:
Tue May 04, 2021 3:51 pm
the second result does not show focus gaps.
I am not sure about this, it is hard to tell with the lower resolution image, but I think I might still be able to see the band I highlighted? I am really not sure though.
by Scarodactyl
Tue May 04, 2021 10:37 am
Forum: Equipment Discussions
Topic: Help to choose between two Mitutoyo 20x lens
Replies: 10
Views: 263

Re: Help to choose between two Mitutoyo 20x lens

The BD is the same as the m plan optically, but if you remove the shell it is a little slimmer whixh is good for lighting. In practice I have nwver had much trouble with the normal 20x, as the working distance is plenty long.
by Scarodactyl
Tue May 04, 2021 9:24 am
Forum: Equipment Discussions
Topic: Help to choose between two Mitutoyo 20x lens
Replies: 10
Views: 263

Re: Help to choose between two Mitutoyo 20x lens

Skip the SL, the resolution is much lower. You only want the normal M plan apo.
The 20x m plan apo is a great objective, you will have fun with it as long as your focusing setup can handle it.
by Scarodactyl
Mon May 03, 2021 4:11 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Haze?
Replies: 23
Views: 578

Re: Haze?

Image
See the area I've outlined in white which follows the contours like a topo line--it looks like no in focus shot was taken at that depth.
by Scarodactyl
Mon May 03, 2021 1:14 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Haze?
Replies: 23
Views: 578

Re: Haze?

Is this a stack? It looks like a layer missed focus.
by Scarodactyl
Sun May 02, 2021 12:03 pm
Forum: Equipment Discussions
Topic: Parallel sensor alignment / digital spirit levels
Replies: 12
Views: 455

Re: Parallel sensor alignment / digital spirit levels

A coaxial illuminator helps for visual alignment using my magnetic positioning stand, DIC helps a bit more. I also have a couple interferometry objectives if I'm feeling particularly special, though they're really too sensitive so they've mostly just been showing me I need to get some sorbothane pad...
by Scarodactyl
Sun May 02, 2021 1:03 am
Forum: Equipment Discussions
Topic: Optem HR 20x
Replies: 3
Views: 194

Re: Optem HR 20x

Thr EO situation is a bit odd, since they still have it labelled as EO HR on the site but the picture is of an optem objective. My 10x was a Kramer-labelled one. I do like the snazzy blaxk and gold look. I think Navitar actually makes their own optics (at least some), a real novelty in today's world...