Search found 339 matches

by Guppy
Mon Nov 20, 2023 7:55 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Contrast
Replies: 6
Views: 4238

Re: Contrast

Hi Macroro
A very good picture.
The colors are very nice, I also like the black scales very much.
Kurt
by Guppy
Mon Oct 16, 2023 2:30 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Macro in Motion: Wing Scales of an Alpine Black Swallowtail, Papilio maackii
Replies: 19
Views: 8875

Re: Macro in Motion: Wing Scales of an Alpine Black Swallowtail, Papilio maackii

Hi Jay
So beautiful, I can hardly believe what I see.
Excellent work that I admire!

Kurt
by Guppy
Sun Sep 17, 2023 8:59 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Monarch Butterfly Egg
Replies: 2
Views: 1192

Re: Monarch Butterfly Egg

Hi
Very nice pictures in a super resolution, everything clear and recognizable.
Kurt
by Guppy
Wed Sep 06, 2023 6:07 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Sesbania spp
Replies: 2
Views: 821

Re: Sesbania spp

Hi Marc

What an incredibly beautiful flower!
Very interesting, I like it.

Kurt
by Guppy
Mon Aug 07, 2023 6:11 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Honey Bee
Replies: 3
Views: 803

Re: Honey Bee

Hallo Lothar

Das Bild gefällt mir sehr gut, eine Freude!
Licht gut gesetzt, der Übergang in die Unschärfe passend.
Hohe Auflösung, schön die gefiederten Haare,
die Haare in den Augen und die Reihe von Häkchen um die Flügel zu verbinden.

Welche Kamera hast du verwendet?

Kurt
by Guppy
Wed Jun 21, 2023 1:36 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: 3D / stereo
Replies: 11
Views: 1270

Re: 3D / stereo

Hi Adi

That's how I like the 3-D effect.

Kurt
by Guppy
Tue Jun 20, 2023 6:55 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: 3D / stereo
Replies: 11
Views: 1270

Re: 3D / stereo

Hello

To my eyes, it looks better like this
Image

Kurt
by Guppy
Thu Jun 15, 2023 8:04 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Bad Hair Day
Replies: 2
Views: 846

Re: Bad Hair Day

Hi Saul

Very nice pictures in a super resolution, everything clear and recognizable.

Kurt
by Guppy
Thu Jun 08, 2023 3:02 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: A weird fly
Replies: 8
Views: 1017

Re: A weird fly

Hello Mark

Very nice pictures.
It looks like a cyclops.
I have never seen it so extreme.

Thanks for showing

Kurt
by Guppy
Wed Mar 22, 2023 2:55 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: More mayfly weirdness
Replies: 6
Views: 1295

Re: More mayfly weirdness

Hi Mark
What a beautiful subject, nice one!!
Kurt
by Guppy
Tue Feb 28, 2023 3:47 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: A weird little mayfly
Replies: 4
Views: 969

Re: A weird little mayfly

Hi Mark

Very nice pictures in a super resolution, everything clear and recognizable.
The turban eyes are the absolute hit

Kurt
by Guppy
Fri Feb 17, 2023 5:35 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Teleconverters in macro
Replies: 43
Views: 4860

Re: Teleconverters in macro

Hi Rik I am not a laboratory for microscopy optics, I am a photographer. For me the result with real objects in the processed image is important. The resolution drop to the image corners should not be disturbing. In general, a good Fotolens with a low resolution drop to the corners (large good quali...
by Guppy
Thu Feb 16, 2023 3:11 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Teleconverters in macro
Replies: 43
Views: 4860

Re: Teleconverters in macro

Hi Rik

I often disagree with numbers I read, too,
so I make my measurements several times on my setup with the Zeiss Resolution Test Object 3000.
These results are authoritative for me.

Kurt
by Guppy
Thu Feb 16, 2023 2:10 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Teleconverters in macro
Replies: 43
Views: 4860

Re: Teleconverters in macro

Hi

I deliberately mention camera (pixel pitch 2.2µm and 4.9µm) and lens (10X/0.28 and 20X/0.42, they are my measured values!
At 5:1, 1:1 or in reducing photography it behaves differently.
Concerning teleconverters there is no simple general rule.

Kurt
by Guppy
Thu Feb 16, 2023 8:53 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Teleconverters in macro
Replies: 43
Views: 4860

Re: Teleconverters in macro

Hi The MITUTOYO M Plan Apo 10X/0.28 ∞/0 f=200 on a Nikon D810 pixelpitch 4.9µm resolves the object with 950LP/mm. The MITUTOYO M Plan Apo 10X/0.28 ∞/0 f=200 on a camera with pixel pitch 2.2µm resolves the object with 950LP/mm. The MITUTOYO M Plan Apo 10X/0.28 ∞/0 f=200 on a Nikon D810 pixelpitch 4.9...