Search found 51 matches

by David Sykes
Mon May 09, 2022 4:42 am
Forum: Photography Through the Microscope
Topic: elytra of a reticulated beetle
Replies: 12
Views: 1562

Re: elytra of a reticulated beetle

Excelllent images !

I have a 3D Home cinema setup and it would be awesome to see these in stereo :)
by David Sykes
Fri Dec 25, 2020 12:17 pm
Forum: Photography Through the Microscope
Topic: New 3D lighting system (DIY)
Replies: 7
Views: 3495

Re: New 3D lighting system (DIY)

Very nice image, do you have a comparison photo taken with your 'normal' transmitted-light setup ?

(Hope you enjoyed your Lidl vegan Xmas pudding :-) )
by David Sykes
Tue Dec 22, 2020 3:05 pm
Forum: Photography Through the Microscope
Topic: What you wanted see in Scanning Electron Microscope?
Replies: 114
Views: 49171

Re: What you wanted see in Scanning Electron Microscope?

This is the first time I have looked at these images, they are truly incredible. Unlike many on the forum, I have little interest in the biological aspects, just the visual impact, especially in 3D. Colour or black-and-while, subtle pale colours or bold bright colours are all fine. I have recently i...
by David Sykes
Tue Dec 22, 2020 7:20 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Windows of Papilio ulysses wing scale
Replies: 17
Views: 8753

Re: Windows of Papilio ulysses wing scale

Chris, very nice images.

The bottom stereo image is perfect but the top one can be made even better by trying to match the central glare spot on left and right images.
The human brain immediately detects impossible disparities.
SPM can fix that or maybe a simple cut-and-paste ?

David
by David Sykes
Wed Dec 16, 2020 3:18 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Wide Angle View at macro / micro scale
Replies: 10
Views: 6205

Re: Wide Angle View at macro / micro scale

> I can't recall right now what this lens type is called in the videosurveillance circles. A surveillance or TV camera pinhole lens. Looking in my shed, I have a Lenzar Optics 9mm f3.5 pinhole lens, bought many decades ago. Virtually no info available, but Cosmicar also made them. Ebay item # 324007...
by David Sykes
Sat Dec 05, 2020 1:00 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: MJKZZ Rail and Canon Mirrorless Cameras
Replies: 15
Views: 5506

Re: MJKZZ Rail and Canon Mirrorless Cameras

Only just seen your post Louise. There is certainly a way of doing this. I have in front of me an EOS M3 camera (also works with my M10) and am currently testing a new,very simplified version of My StereoData Maker (SDM) software. To achieve the new version, I stripped the old version 'down to the m...
by David Sykes
Sun Sep 06, 2020 1:12 pm
Forum: Nature Photography -- Macro and Close-up
Topic: non bug pictures
Replies: 6
Views: 2265

Re: non bug pictures

Although I believe all living things (including humans) are programmed biological machines, the machine aspect is most obvious in insects,especially ants.
I can almost visualise writing their code :-)
The tricky part is how the code wrote itself.

But I digress ........
by David Sykes
Sat Sep 05, 2020 2:33 pm
Forum: Nature Photography -- Macro and Close-up
Topic: non bug pictures
Replies: 6
Views: 2265

Re: non bug pictures

Maybe because the component parts of most flowers do not vary as radically as the component parts of insects.
In other words ............ they are not as interesting, we more or less know what we are getting.
by David Sykes
Fri Aug 21, 2020 2:14 pm
Forum: Nature Photography -- Macro and Close-up
Topic: Abstract
Replies: 9
Views: 2119

Re: Abstract

A very pleasing image. I find it more interesting than 'straightforward' flowers and insects although there have been many excellent mineral photos on the forum that are similarly abstract. They tend to be less complex though. If you have enough layers a stereo pair would be very interesting and add...
by David Sykes
Fri Jun 19, 2020 6:09 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Geranium stigma
Replies: 10
Views: 3473

Re: Geranium stigma

I am just taking a tea break while installing a home cinema screen. The projector supports most 3D modes which is why I bought it. I think the stereo came out particularly well So do I :) I should have the 3D glasses today or tomorrow and this would make an excellent test subject. StereoPhoto Maker ...
by David Sykes
Tue May 26, 2020 5:07 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Cabbage creek doli
Replies: 3
Views: 2090

Always nice to see stereo images but you need to be aware of window violation, your brain detects it is an impossible situation :-

http://cim.mcgill.ca/~jonathan/window_violation.pdf
by David Sykes
Sat Apr 25, 2020 2:31 pm
Forum: Equipment Discussions
Topic: Projecting an image *into* the view through a microscope
Replies: 8
Views: 4504

Research "aerial image cinematography" or similar. . Not surprisingly vast majority of hits are for taking aerial photos. "aerial image optical printers" is more relevant. This diagram shows the basic concept :- https://tinyurl.com/yagxngl7 If the condenser lens was not there the camera would only ...
by David Sykes
Wed Apr 22, 2020 3:48 pm
Forum: Equipment Discussions
Topic: Projecting an image *into* the view through a microscope
Replies: 8
Views: 4504

Research "aerial image cinematography" or similar.
I played with it many decades ago but not with projected images that small.
A condenser lens near but behind the aerial image focuses the light source into the entrance pupil of the lens so that you get an evenly illuminated field.
by David Sykes
Sun Feb 09, 2020 2:19 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Depth of field for DIC imaging
Replies: 0
Views: 3095

Depth of field for DIC imaging

I will be making some image stacks using transmitted and epi DIC.
DIC is very useful for its 'optical sectioning' capabilities but I am curious as to whether members use a calculation or just a process of trial-and-error when determining step size.

David
by David Sykes
Sun Feb 02, 2020 5:48 pm
Forum: Photography Through the Microscope
Topic: Sugar + Ascorbic acid
Replies: 8
Views: 2963

Posted seven minutes after your last very nice stereo shot so no distortions.
But,in my opinion, too much stereo depth :)

Try again with less shift.