Search found 465 matches

by JohnyM
Sun Oct 27, 2019 11:02 pm
Forum: Equipment Discussions
Topic: Darkfield Microscopy ??
Replies: 8
Views: 864

Sure. Light your subject from steep angle - like 90 degrees. And make sure your light wont reach the lens.
by JohnyM
Wed Aug 14, 2019 11:40 pm
Forum: Beginners Macro
Topic: Specimen Holder
Replies: 35
Views: 21168

Looks like goniometer without scale or gears.
by JohnyM
Wed May 29, 2019 7:35 am
Forum: Equipment Discussions
Topic: Use cases for ELWD Condensers
Replies: 8
Views: 1820

I often see LWD condensers in upright metalurgical microscopes. Some samples are quite high, and you might want to observe upper part of it. Thanks to LWD design you can focus your light properly. In case of thick opaque samples, you might want to do measurments with backlight, and properly focused ...
by JohnyM
Sun May 12, 2019 6:47 am
Forum: Equipment Discussions
Topic: PZO PhZ question(s)
Replies: 36
Views: 9821

Photo 1 and 2 does not look like you use phase annuli. Are you sure? If so, i dont know what might be your problem. It's been years since i've got rid of mine PHZ kit, but IIRC it did covered APS-C sensor just fine. BTW: I have exact same problem with Nikon 4x PHL objective and concluded that it's j...
by JohnyM
Sat May 11, 2019 8:04 pm
Forum: Equipment Discussions
Topic: PZO PhZ question(s)
Replies: 36
Views: 9821

Good, now ALSO insert condenser phase annuli, without opening the diaphragm.
by JohnyM
Sat May 11, 2019 10:42 am
Forum: Equipment Discussions
Topic: PZO PhZ question(s)
Replies: 36
Views: 9821

Are you using K3-PHZ polarizer? It looks like the one from KPI2 but it's not.

For a test, instea of using polarizer, use aperture diaphragm to obscure outer ring and see what happens.
by JohnyM
Thu May 09, 2019 11:39 pm
Forum: Equipment Discussions
Topic: PZO PhZ question(s)
Replies: 36
Views: 9821

How is your polarizer set?
by JohnyM
Mon Apr 15, 2019 9:43 am
Forum: Equipment Discussions
Topic: Dishonest reselling sites: examples
Replies: 31
Views: 8027

I've purchased from idea"for"life with no problems. Just saying.
by JohnyM
Thu Apr 04, 2019 2:35 pm
Forum: Equipment Discussions
Topic: Zeiss Axiomat question
Replies: 18
Views: 11161

I would love to see it configured for Fedorov, thanks.
by JohnyM
Thu Apr 04, 2019 4:26 am
Forum: Equipment Discussions
Topic: Zeiss Axiomat question
Replies: 18
Views: 11161

Those are sexiest microscopes i've seen! It can even take Fedorov?
Can i request a picture :lol: ?
by JohnyM
Mon Mar 11, 2019 2:29 pm
Forum: Equipment Discussions
Topic: Optiphot with infinity objectives
Replies: 13
Views: 3072

How do you handle tube lenght with 125mm and trinoc?
by JohnyM
Sun Feb 24, 2019 10:52 am
Forum: Equipment Discussions
Topic: adapter for Carl Zeiss Jena phototube setup
Replies: 39
Views: 15913

Apart from the serviceing issues (cacked lubricant), the mechanical quality of these microscopes is very good (not quite as excellent als Leitz or Zeiss West from the same time but certainly better than the small microscopes you get nowadays) I would pick 1Q Jena Micoroscope every time, over sooner...
by JohnyM
Mon Feb 18, 2019 7:03 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Not enough pixels for 20/0.75?
Replies: 14
Views: 6465

rjlittlefield wrote:Perhaps JohnyM overlooked the 1.6X afocal setup used with the 40X, as I initially did.
Indeed i have.
Also i would sworn my post was written differently than it looks now. Until i figure why my mind is playing tricks on me, i'll refrain from further discussion.
by JohnyM
Mon Feb 18, 2019 6:52 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Episcopic TTL microscopy compared Bio vs Industrial
Replies: 10
Views: 4041

Im not sure what you mean. You want to futher diffuse BD light path? Or transform it into typical macro-rig side lighting? If 2nd is the case, i can freely use a ping-pong / diffusion sheet with some Jansjo lamps. WD's are quite manageable, not a mitutoyo, but not too shabby. But i think i also have...
by JohnyM
Mon Feb 18, 2019 6:18 am
Forum: Photography Through the Microscope
Topic: Pinus sylvestris autofluorescence stack'n stich
Replies: 9
Views: 1972

Thank you for kind comments.

Answers in order:
-Sample wasnt prepared, it's just cutted on microtome.
-Sure, cube was V-1A, my personal fav. 90% time image looks better than with UV.
-All of them are same image. 2nd and 3rd are just crops from 1st