Search found 4720 matches

by Pau
Tue Nov 03, 2020 12:07 pm
Forum: Beginners Micro
Topic: Suggestions for clamping a camera to scope for afocal
Replies: 7
Views: 944

Re: Suggestions for clamping a camera to scope for afocal

AHA! This explains something I've thought about for quite some time, and discussed it a bit on microbehunter a couple of years ago: http://www.microbehunter.com/microscopy-forum/viewtopic.php?p=61009#p61009 I have the Asahi Pentax Microscope adapter on my Wild M20. I tried, and I can't fit a Nikon ...
by Pau
Tue Nov 03, 2020 5:08 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Hand sectioning; plants
Replies: 5
Views: 1703

Re: Hand sectioning; plants

Straight scalpel blades are useful for hand cutting, although in most cases too short for use with typical hand microtomes Swann-Morton #16 may be convenient, https://www.ebay.co.uk/itm/Swann-Morton-Surgical-Scalpel-Blades-6-9-10-10A-11-12-15-16-18-20-21-23-25A-26/254545564015?hash=item3b4419116f:g:...
by Pau
Tue Nov 03, 2020 3:41 am
Forum: Beginners Micro
Topic: Mirror replacement
Replies: 14
Views: 1468

Re: Mirror replacement

No, you linked just a hole adapter, I meant a light source like: https://www.ebay.com/itm/6W-24W-Round-LED-Panel-Light-Surface-Mount-Ceiling-Down-Lights-Bathroom-Kitchen/224209063798?hash=item3433e6cf76:g:JpwAAOSwwUJdxN7n (6W round flush mount / 4000K neutral white) A dimmable model would be prefera...
by Pau
Tue Nov 03, 2020 2:53 am
Forum: Beginners Micro
Topic: Suggestions for clamping a camera to scope for afocal
Replies: 7
Views: 944

Re: Suggestions for clamping a camera to scope for afocal

Thank you for your reply. Yea that third setup in your link looks really attractive. I guess I'd screw the front of my lens on to that filter ring at the end of the assembly. And I assume the Zeiss camera adapter clamps directly to the tube rather than the eyepiece itself? I'm just not sure if I co...
by Pau
Tue Nov 03, 2020 1:56 am
Forum: Beginners Micro
Topic: Mirror replacement
Replies: 14
Views: 1468

Re: Mirror replacement

There are someones for sale at UK (although more expensive), Russia and Ukraine. Maybe adapting a LED "downlight" plate over the microscope base could be more practical
by Pau
Mon Nov 02, 2020 11:57 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Zodiac Moth Scales
Replies: 7
Views: 1978

Re: Zodiac Moth Scales

100x, epi-illumination, so it's very flat and even. There's no other way to light it because of the short working distance. In principle, epi-illumination can be structured so that light comes out of just part of the front of the lens. If that part is sufficiently small and off-center, then you sho...
by Pau
Mon Nov 02, 2020 9:48 am
Forum: Beginners Micro
Topic: Suggestions for clamping a camera to scope for afocal
Replies: 7
Views: 944

Re: Suggestions for clamping a camera to scope for afocal

Here and in the links inside you have some ideas: https://www.photomacrography.net/forum/viewtopic.php?p=99265#p99265 Something like my third setup would work well and can be made with an old style camera adapter and some adapter rings. If you post a picture of your microscope this would be useful. ...
by Pau
Mon Nov 02, 2020 6:05 am
Forum: Equipment Discussions
Topic: Optiphot special nosepiece
Replies: 3
Views: 1861

Re: Optiphot special nosepiece

What's that 10x objective, does it read NA=0.30? SHould be fluorite then.
Not necessary, it can be an achromat or plan achro. I own a Nikon Plan Achro 10/3.0, although it's an infinite CF more modern objective
When nothing else is written on the safest guess is just achro.
by Pau
Mon Nov 02, 2020 3:57 am
Forum: Equipment Discussions
Topic: Macroscopes - some musings
Replies: 9
Views: 2302

Re: Macroscopes - some musings

Hi Pau, The data on the AZ100 is from the "AZ100 technical handbook.pdf", the copy of which looks as if scanned from paper. According to the datecode I downloaded my copy in 2015. Attached to this post is a picture of a table from p40 - for some reason I cannot attach the pdf-file, which is at any ...
by Pau
Mon Nov 02, 2020 3:02 am
Forum: Equipment Discussions
Topic: Adapting aps-C to nikon: a few different methods
Replies: 9
Views: 2507

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

Interesting -and somewhat surprising- test.

Did you try afocally with a normal cf or cfn 10X viewing eyepiece?

Because for afocal you use a normal Canon EF lens, does Canon DPP corrects well the residual chromatic aberration shown?
by Pau
Mon Nov 02, 2020 2:12 am
Forum: Community Members and Friends
Topic: Intro
Replies: 3
Views: 1098

Re: Intro

Hi Karl, welcome aboard!
by Pau
Mon Nov 02, 2020 2:10 am
Forum: Beginners Micro
Topic: Help with adjusting contrast
Replies: 6
Views: 1464

Re: Help with adjusting contrast

Your #2 option is the right one. The adequate diameter of the condenser diaphragm depends o several factors: 1-condenser height: try to place it at its ideal position 2- kind of condenser, here I assume a typical Abbe two lens condenser 3- objective magnification and NA: wider with higher NA objecti...
by Pau
Sat Oct 31, 2020 12:31 pm
Forum: Equipment Discussions
Topic: Macroscopes - some musings
Replies: 9
Views: 2302

Re: Macroscopes - some musings

Hi palaephatus, This is an interesting post. I would like to know the source of your AZ100 data, in any case the analysis only at 8X can be too detrimental of the instrument capabilities (of the commented instruments it is the only one I have). I'm preparing a post about it but I always am slow. In ...
by Pau
Fri Oct 30, 2020 3:52 am
Forum: Photography Through the Microscope
Topic: Dunaliella salina
Replies: 5
Views: 1391

Re: Dunaliella salina

grgh, micro_pix, Macro_Cosmos,

Thank you all for your kind comments!
by Pau
Tue Oct 27, 2020 9:11 am
Forum: Photography Through the Microscope
Topic: Stentor roeseli
Replies: 3
Views: 1072

Re: Stentor roeseli

Excellent pictures and video!