Search found 54 matches

by kutilka
Wed Feb 05, 2020 3:35 am
Forum: Equipment Discussions
Topic: Comparing macro lenses using MTF - invitation, take 3
Replies: 27
Views: 4793

I lent the Evitars to Filip for testing. They are prototype pieces from Meopta Research and Development. Therefore the different quality. They were used in the 1970s in microfiche readers and there were more versions. I have about 10 Evitars still in the drawer ... Excuse me for my English. (Google ...
by kutilka
Thu Dec 19, 2019 10:54 am
Forum: Nature Photography -- Macro and Close-up
Topic: Anisoplia sp.
Replies: 2
Views: 1372

Anisoplia sp.

Canon 2,8/100macro http://www.photomacrography.net/forum/userpix/924__MG_6613_1.jpg http://www.photomacrography.net/forum/userpix/924__MG_6620_1.jpg http://www.photomacrography.net/forum/userpix/924__MG_6627_1.jpg ... and one more ... http://www.photomacrography.net/forum/userpix/924__MG_6638_m_1.jpg
by kutilka
Mon Dec 02, 2019 1:00 am
Forum: Nature Photography -- Macro and Close-up
Topic: Some pictures from Croatia.
Replies: 9
Views: 4027

Thank you... :D
by kutilka
Sun Nov 17, 2019 9:15 am
Forum: Nature Photography -- Macro and Close-up
Topic: Some pictures from Croatia.
Replies: 9
Views: 4027

Some pictures from Croatia.

Canon 2,8/100macro.
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by kutilka
Mon Oct 07, 2019 8:16 pm
Forum: Equipment Discussions
Topic: Helicon FB tube
Replies: 3
Views: 939

I tried my new FB Helicon yesterday, the scanning speed is maintained. :)
by kutilka
Wed Sep 25, 2019 11:16 pm
Forum: Equipment Discussions
Topic: Helicon FB tube
Replies: 3
Views: 939

If the Canon EOS 50D has a continuous shooting rate of 6.3 frames per second, will I actually have 6 frames per second in the appropriate Helicon FB mode with sharpening?
by kutilka
Sun Sep 15, 2019 10:25 pm
Forum: Equipment Discussions
Topic: Comparing macro lenses using MTF-Part IX: Some budget lenses
Replies: 11
Views: 2330

Pau wrote:
Not 100% sure but I think that later Zeiss Jena infinite CF objectives meant for use with 250mmm TL do not need corrective eyepieces and so they are "full corrected" in the same sense of Nikon CFs
http://www.funsci.com/fun3_it/sini/mo/o ... _zeiss.pdf
by kutilka
Fri Aug 16, 2019 12:15 am
Forum: Beginners Macro
Topic: Specimen Holder
Replies: 35
Views: 21702

For vertical use yes, for horizontal it would have to be a circular magnet strong enough to hold the upper part.
I chose my solution for more friction and hence stability. :)
by kutilka
Thu Aug 15, 2019 8:55 pm
Forum: Beginners Macro
Topic: Specimen Holder
Replies: 35
Views: 21702

I don't have production possibilities. :( I only have 1 piece that a turner made after a long persuasion. It is necessary to keep exactly both radii to ensure that the two parts fit perfectly. (NC machine tool). Grind and polish after turning. Handmade nearly 3 hours ... Ideally, a PTFE coating wou...
by kutilka
Thu Aug 15, 2019 3:43 am
Forum: Beginners Macro
Topic: Specimen Holder
Replies: 35
Views: 21702

The device is not patented !!!
Kutilkův patentní ukolmovač - it's just such a recession.:!: :D
Production possibilities for serial or semi-series production do not have ...
I gave it just for inspiration ...
by kutilka
Wed Aug 14, 2019 8:29 pm
Forum: Beginners Macro
Topic: Specimen Holder
Replies: 35
Views: 21702

My device is optimized for documentary photography of insect collection specimens. :)
Image
by kutilka
Wed Aug 14, 2019 12:53 am
Forum: Beginners Macro
Topic: Specimen Holder
Replies: 35
Views: 21702

Sorry.:? The subject (beetle on the label) is always in the field of view, only the tilt changes. Unlike, for example, Novoflex. http://www.photomacrography.net/forum/userpix/924_Ukolmovaprincip_1.jpg http://www.photomacrography.net/forum/userpix/924_Ukolmova_II_1.jpg http://www.photomacrography.net...
by kutilka
Mon Aug 12, 2019 9:04 pm
Forum: Beginners Macro
Topic: Specimen Holder
Replies: 35
Views: 21702

by kutilka
Sun Jun 23, 2019 11:59 pm
Forum: Photography Through the Microscope
Topic: Endoparasite
Replies: 2
Views: 814

Endoparasite

An endoparasite from the esophagus gull Larus cachinnans. Trematoda Clinostomum complanatum (Rudolphi, 1819) Size approx. 3mm. Second frame in polarized light. Metalloplan Leitz, GF Planachromat HD 6.3x / 0.12 oo / -A Stacks of 8 shots. http://www.photomacrography.net/forum/userpix/924_Clinostomum_c...