Hi
I stand by my statement:
The object side image section is visibly 20% smaller, this is the disadvantage.
It would be interesting to know your opinion on this.
Kurt
Search found 339 matches
- Mon Mar 28, 2022 9:44 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Ant And Mathematical Question
- Replies: 12
- Views: 1371
- Mon Mar 28, 2022 8:07 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Ant And Mathematical Question
- Replies: 12
- Views: 1371
Re: Ant And Mathematical Question
The object side image section is visibly 20% smaller, this is the disadvantage.
- Mon Mar 28, 2022 3:18 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Ant And Mathematical Question
- Replies: 12
- Views: 1371
Re: Ant And Mathematical Question
Hi
"and opting for a longer extension doesn't appear to impair image quality"
At 12.4x, compared to 10x, the object-side image section is visibly 20% smaller, but judged by eye, the resolution of the object is not higher.
Thus, it is a loss and not a gain!
Kurt
"and opting for a longer extension doesn't appear to impair image quality"
At 12.4x, compared to 10x, the object-side image section is visibly 20% smaller, but judged by eye, the resolution of the object is not higher.
Thus, it is a loss and not a gain!
Kurt
- Wed Mar 16, 2022 10:20 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Orchids in 3D
- Replies: 2
- Views: 606
Re: Orchids in 3D
Hi John
Absolutely brilliant!
So nice to dive into the flowers with 3D.
Thanks a lot
Kurt
Absolutely brilliant!
So nice to dive into the flowers with 3D.
Thanks a lot
Kurt
- Mon Mar 14, 2022 8:23 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Dardanus megistos
- Replies: 1
- Views: 566
Dardanus megistos
Hi Macroscopic in magnifying scale. The picture shows the surface of a pincer of the Red or White-spotted Hermit Crab (Dardanus megistos). It is NOT from a live animal, but from the stripped skin, which it buried in the sand. https://up.picr.de/43200940ls.jpg www.focus-stacking.ch/B/05413_00.JPG Cam...
- Wed Mar 02, 2022 10:32 am
- Forum: Equipment Discussions
- Topic: Novoflex Focusing Rack
- Replies: 8
- Views: 1507
Re: Novoflex Focusing Rack
Hello Harald
I've been stacking with StackShot for over 10 years up to 60/0.7 and I'm absolutely satisfied with it.
(Un)fortunately the StackShot has no blue button
Kurt
I've been stacking with StackShot for over 10 years up to 60/0.7 and I'm absolutely satisfied with it.
(Un)fortunately the StackShot has no blue button
Kurt
- Fri Feb 04, 2022 5:42 am
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Telecentric combo at 0.8X to 1.69X
- Replies: 69
- Views: 49772
Re: Telecentric combo at 0.8X to 1.69X
Hi Lou For stitched images, telecentric lenses are certainly an advantage. Regarding resolution in the image with telecentric lenses: Resolution is often not as high with telecentric lenses as it is with entocentric lenses, depending on the magnification. The Nikon MM 1x Toolmaker (is telecentric on...
- Tue Feb 01, 2022 4:01 am
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Telecentric combo at 0.8X to 1.69X
- Replies: 69
- Views: 49772
Re: Telecentric combo at 0.8X to 1.69X
Hi For the information of photographers who are interested in object-side telecentric lenses. The Zhongyi Mitakon Creator 85 f/2.8 1-5X Super Macro is nearly telecentric. Concerning telecentrie https://www.photomacrography.net/forum/viewtopic.php?f=27&t=43090 Concerning image quality etc https://www...
- Sun Jan 30, 2022 2:30 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: different stages of Heptagenia flava
- Replies: 11
- Views: 2043
Re: different stages of Heptagenia flava
Hallo Peter
As usual from you very nice pictures
The making of is interesting.
Thanks a lot
Kurt
As usual from you very nice pictures
The making of is interesting.
Thanks a lot
Kurt
- Sun Jan 30, 2022 2:22 pm
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Mayfly molting from subimago to adult
- Replies: 13
- Views: 2419
Re: Mayfly molting from subimago to adult
Hi Rik
An interesting series very well photographed.
I like the turban eyes very special.
Thanks for the pictures and the accompanying text.
Kurt
An interesting series very well photographed.
I like the turban eyes very special.
Thanks for the pictures and the accompanying text.
Kurt
- Tue Jan 25, 2022 3:34 am
- Forum: Equipment Discussions
- Topic: Remedy for vibrations
- Replies: 37
- Views: 4109
Re: Remedy for vibrations
In macro or microphotography it is crucial among other factors to work with very short exposure times. I use the term “t0.5” as a measure for the burning time of a flash. That is the time taken from the 50% maximum until the value has dropped down to 50%. Less convenient are photo-transistors for me...
- Mon Jan 24, 2022 2:29 pm
- Forum: Equipment Discussions
- Topic: Remedy for vibrations
- Replies: 37
- Views: 4109
Re: Remedy for vibrations
Hi
And then when you know with Sensor Kinetcs how much it trembles,
you still do not know how much it can be seen in the picture!
The camera is a very good measurement tool for photography!
Resolution measurements create relevant results for photography.
Kurt
And then when you know with Sensor Kinetcs how much it trembles,
you still do not know how much it can be seen in the picture!
The camera is a very good measurement tool for photography!
Resolution measurements create relevant results for photography.
Kurt
- Mon Jan 24, 2022 8:43 am
- Forum: Equipment Discussions
- Topic: Remedy for vibrations
- Replies: 37
- Views: 4109
Re: Remedy for vibrations
Hi First do a resolution test with a resolution test target (USAF chart) with the current setup. Then remove the monitor and its mount. Then do a resolution test again, the resolution should be higher. Then you can remove the high setup of the camera and mount the object on the sled, not at the same...
- Mon Jan 24, 2022 7:45 am
- Forum: Equipment Discussions
- Topic: Remedy for vibrations
- Replies: 37
- Views: 4109
Re: Remedy for vibrations
Hi Pete When the motorized carriage moves, the camera and likewise the monitor vibrate. It takes a long time for the high structure of the camera and the monitor, which is far out, to settle down, so also when the environment is vibrating. It is better to move the light object with the sled. The cam...
- Mon Jan 24, 2022 4:50 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Argas reflexus
- Replies: 2
- Views: 599
Argas reflexus
Hi Is it a beautiful and friendly eight-legged, or an annoying good-for-nothing? The European pigeon tick lives about 4-6, maximum 18 years and can live several years without food (blood), in case of need human blood is enough. Body length 6.1mm. https://up.picr.de/42897184oy.jpg As video, using m.o...