Search found 1298 matches

by JH
Thu Feb 27, 2020 12:04 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Glass on glass (on glass)
Replies: 8
Views: 1822

Very nice!
Best regards
Jörgen Hellberg
by JH
Wed Feb 26, 2020 12:50 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Papilio ulysses
Replies: 37
Views: 7132

Nice picture. Your webpage, made me remember that it was your pictures that was one of the main reasons that I wanted to photograph butterfly scales.

Best regards
Jörgen Hellberg
by JH
Mon Feb 24, 2020 9:46 am
Forum: Photography Through the Microscope
Topic: Neurons
Replies: 2
Views: 765

Interesting, thanks för posting.
Best regards
Jörgen Hellberg
by JH
Mon Feb 24, 2020 1:50 am
Forum: Equipment Discussions
Topic: 300mm tube lens?
Replies: 34
Views: 4017

Back to the initial question. My apo ronar 360 mm is nice and was not expansivt. But needed a lot of stepping rings and tubes to adapt. The nikon 300 needs a piece of tape to hold focus at infinity using it vertical. The nikon 400 might be to expensive. Another option is to use a teleconverter. Hope...
by JH
Sun Feb 23, 2020 3:57 pm
Forum: Equipment Discussions
Topic: 300mm tube lens?
Replies: 34
Views: 4017

I just now grabbed a dust mite and sandwiched it between two coverslips and ran a stack with my 400mm Nikkor ED and 20x 0.75 VC on an S1R FF camera.. I'll post the results here shortly. Looking forward to that. 400mm tube lens cleared my corners 300mm did not. I could not resist trying it without a...
by JH
Sun Feb 23, 2020 2:08 pm
Forum: Equipment Discussions
Topic: 300mm tube lens?
Replies: 34
Views: 4017

On my Optiphot microscope I use these lenses above 200mm Nikkor 300mm 4.5 Apo Ronar 360mm 9 Canon 400mm 5.6 Using a longer tube lens enlarges the image circle. Say that a Nikon microscope objective have a 25mm good image circle, and your FF sensor have a 43mm diagonal (sqrt (24^2+36^2)). To cover 43...
by JH
Thu Feb 20, 2020 9:30 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Graphium spez.
Replies: 1
Views: 1051

Nice and inspiring, thanks for posting!
Best regards
Jörgen Hellberg
by JH
Wed Feb 19, 2020 8:16 am
Forum: Photography Through the Microscope
Topic: Butterfly scales
Replies: 6
Views: 878

Thanks for commenting! I've never thought of scales in 3D. The depth looks exaggerated, perhaps illusory or just lack of familiarity. Are we seeing the stems of the missing scales protruding from the substrate? Yes, stems from missing scales. When it comes to synthetic stereo the depth is not perfec...
by JH
Wed Feb 19, 2020 2:22 am
Forum: Photography Through the Microscope
Topic: Butterfly scales
Replies: 6
Views: 878

Thanks for the comments! Love the lighting on those first two shots, very special. The first two pictures are part of a stack and stich. I did not want the light to change between the pictures, so I used cross polarized epi light. This type of light is practically shadow less. I stacked it with Zere...
by JH
Tue Feb 18, 2020 7:37 am
Forum: Photography Through the Microscope
Topic: Butterfly scales
Replies: 6
Views: 878

Butterfly scales

Peacock butterfly (Aglais io). Nikon ELWD plan fluor 20x http://www.photomacrography.net/forum/userpix/3238_Butterfly_scales_from_a_Peacock_butterfly_photo_Jrgen_Hellberg_1.jpg http://www.photomacrography.net/forum/userpix/3238_pfgelsga_1.jpg Cranberry blue (Agriades optilete). Nikon BD M plan apo 4...
by JH
Wed Feb 12, 2020 6:11 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: No success with 3D from Zerene Stacker Stereo/Rocking
Replies: 0
Views: 2565

No success with 3D from Zerene Stacker Stereo/Rocking

I have a couple of times tried to do 3D models with Zerene Stackers Stereo/Rocking function. I must say that I have not found a way to make it work. Here is one example of pictures I used. 8 pictures of a trilobite created with conical path. http://www.photomacrography.net/forum/userpix/3238_Trilobi...
by JH
Mon Feb 10, 2020 9:56 am
Forum: Equipment Discussions
Topic: Optiphot with infinity objectives
Replies: 13
Views: 3402

Thanks Saul
It is always interesting to follow your posts.
Best regards
Jörgen Hellberg
by JH
Mon Feb 10, 2020 4:50 am
Forum: Equipment Discussions
Topic: Optiphot with infinity objectives
Replies: 13
Views: 3402

Saul wrote:One more setup:

Image
Very interesting, thanks for posting. I have very little experience with 3D printing. What material do you recommend if I want to print a reliable part for this type of use?

Best regards
Jörgen Hellberg
by JH
Mon Feb 10, 2020 4:21 am
Forum: Equipment Discussions
Topic: NIKON Plan APO 20X / 0.75 0.17 with and without cover slip
Replies: 14
Views: 2243

Thanks for the comment I personally wouldn't even consider using either the finite or infinity type 20x 0.75 objectives without a coverslip. That depends on what you want to photograph and finding a way to do it with the gear you have. For me it started with curiosity and this post 2015 https://www....
by JH
Mon Feb 10, 2020 12:28 am
Forum: Equipment Discussions
Topic: NIKON Plan APO 20X / 0.75 0.17 with and without cover slip
Replies: 14
Views: 2243

Hi Adalbert I have been thinking about this lens. Thanks for testing it. Have you tried to see the difference in image quality with different distances between the tube lens and the sensor? If you have, it would be nice to se the results. I have posted my testing with the Nikon Plan apo 20x NA 0.75 ...