Search found 58 matches

by jurkovicovic
Wed Apr 07, 2021 1:18 pm
Forum: Photography Through the Microscope
Topic: My first crystallisation Caffeine
Replies: 20
Views: 1131

Re: My first crystallisation Caffeine

Citric acid, mixed with water and slowly evaporated.
by jurkovicovic
Wed Apr 07, 2021 11:39 am
Forum: Photography Through the Microscope
Topic: My first crystallisation Caffeine
Replies: 20
Views: 1131

Re: My first crystallisation Caffeine

Promised output. I can't judge if there's enough detail in the picture. However I am satisfied - first try + DiY "polarizer" FOV 6mm, Lomo 3,7x, 2x led, transmitted light, APSC. http://wildlifefotoforum.cz/download/file.php?id=47225&mode=view/vzorek1.jpg http://wildlifefotoforum.cz/download/file.php...
by jurkovicovic
Tue Apr 06, 2021 12:39 pm
Forum: Photography Through the Microscope
Topic: My first crystallisation Caffeine
Replies: 20
Views: 1131

Re: My first crystallisation Caffeine

I have a polarizer built, it looks like it works. I'm waiting for the fumes and I'll let you know if I have an output :)
Thanks.
by jurkovicovic
Tue Apr 06, 2021 6:31 am
Forum: Photography Through the Microscope
Topic: My first crystallisation Caffeine
Replies: 20
Views: 1131

Re: My first crystallisation Caffeine

Do you have any advice on how to start with this?
It's quite interesting.
by jurkovicovic
Sun Mar 14, 2021 11:30 pm
Forum: Equipment Discussions
Topic: Raynox DCR-150 in Finite Setup
Replies: 8
Views: 1016

Re: Raynox DCR-150 in Finite Setup

here is my experience - finite objective + tubelens.

https://www.photomacrography.net/forum/ ... 25&t=43152
by jurkovicovic
Wed Feb 24, 2021 1:42 pm
Forum: Equipment Discussions
Topic: Nikon M plan 20 0.40 ELWD + Rodagon 150mm f5,6
Replies: 0
Views: 1188

Nikon M plan 20 0.40 ELWD + Rodagon 150mm f5,6

Sometimes I would like to use a 20x objective at 15x, but the image circle is too small, so it is not usable for me. I read somewhere (I can't remember where...) that a tube lens could improve the performance of the finite objective. So i did test of combo, what if ... I'm pleasantly surprised and I...
by jurkovicovic
Tue Nov 17, 2020 12:06 pm
Forum: Equipment Exchange
Topic: Nikon CF Plan 20x/0.46 Infinity objective
Replies: 1
Views: 1307

Re: Nikon CF Plan 20x/0.46 Infinity objective

Pawel do you have any images taken with this objective? APSC will suffice.
by jurkovicovic
Fri Oct 09, 2020 3:30 am
Forum: Equipment Exchange
Topic: BW Optik test target nr.5 - done
Replies: 2
Views: 1273

BW Optik test target nr.5 - done

I have one target extra.
https://www.bw-optik.de/mik.-zubehoer/t ... arat-nr.-5
If someone is intersted let me know.
Price is 18,5 eur + lowcost shipping to EU.

BR
Filip
by jurkovicovic
Wed Sep 30, 2020 10:21 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Dung beetle
Replies: 6
Views: 2569

Re: Dung beetle

=D>
by jurkovicovic
Mon Sep 28, 2020 9:58 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Wulfenite on Mimetite
Replies: 6
Views: 2403

Re: Wulfenite on Mimetite

Beautiful specimen! It is always tragedy when some part or specimen is broken :)
Picture looks really good. For me it is too much red, maybe too much saturation?
Good job!
by jurkovicovic
Sat Sep 26, 2020 3:15 am
Forum: General Discussion Forum and Community Announcements
Topic: Searching for image stacks for AI training
Replies: 4
Views: 2362

Re: Searching for image stacks for AI training

I have original RAW file + result in tiff format. I dont have entrance tiff images, but I can do it again easy. It depends on what you need.
Do you have any idea about data transfer?
by jurkovicovic
Mon Sep 07, 2020 11:58 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: minerals from Slovakia
Replies: 13
Views: 4245

Re: minerals from Slovakia

Gentlemens, based on previous recommendations, I have started to work with an external aperture so that the foreground / background as not to be too disturbing. I did some experiments and tests and I think I did it. The first / last pictures was taken with the f5.6 lens closed. C and C welcomed. Tri...
by jurkovicovic
Sat Aug 15, 2020 3:08 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Wulfenite with "haystack" Mimetite
Replies: 3
Views: 1393

Re: Wulfenite with "haystack" Mimetite

Geopressure wrote:
Fri Aug 14, 2020 1:13 pm
I thought it deserved a shot...
Yeas, you are right, great shot :)
Wulfenite is quite clean.