Micro wide angle

A forum to ask questions, post setups, and generally discuss anything having to do with photomacrography and photomicroscopy.

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patta
Posts: 86
Joined: Mon Apr 20, 2020 9:51 am
Location: Stavanger Norge
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Micro wide angle

Post by patta »

Hi all,
I've been experimenting to make macro/micro with wide angle; maybe a little nearer than the Laowa 24mm probe or the CCTV-lens-on-relay.
If you know of proven techniques and setups, let me know!

Couldn't find all informations in one place, so I am trying to collect a description of the methods and limitations, but just the introduction keeps inflating... and the initial enthusiasm may fade soon. You can read it and I will be honored by comments, criticism or requests.
https://patta107285337.wordpress.com/micro-fisheye/

Short summary:
We can go extremely near and quite wide with "forward pupil" objectives. Up to 50mm :!: working distance at high mag
Total resolution (megapixels) falls if we go nearer than 1mm (point of view-subject), due to diffraction.
Several unexpected lenses can be (ab)used as wide angle macro; I found three in my house!
I'd like support to design/crowdfund an objective optimized for the purpose.

Giorgio

patta
Posts: 86
Joined: Mon Apr 20, 2020 9:51 am
Location: Stavanger Norge
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Re: Micro wide angle

Post by patta »

I wrap up today this project, maybe will continue in a couple of months. The webpage is partially complete.
If somebody of you is also astronomer and happen to have luxury eyepieces, I invite you to try this new application!
Or, for the same purpose, if you have a microscope with Bertrand lens or "collimating telescope", well, that is another way.

Giorgio

Scarodactyl
Posts: 1619
Joined: Sat Apr 14, 2018 10:26 am

Re: Micro wide angle

Post by Scarodactyl »

This is very cool stuff. I'll admit though I have some trouble picturing the type of pictures this would be best for (aside from maybe a 90s style educational rap video for ants?) Still seems like interesting territory to explore.

patta
Posts: 86
Joined: Mon Apr 20, 2020 9:51 am
Location: Stavanger Norge
Contact:

Re: Micro wide angle

Post by patta »

Well, if this stuff is actually "useful", I believe, depends just from the amount of fun we can get by playing with it. Rap ants videos, that could come out cool, depending on the soundtrack!
The macro-wide photos are fun (for a while); not as detailed as we could get from flat objectives, but for nature photos in the environment,
the small bugs look majestic when pictured from near with a wide perspective.

I've started this micro fisheye endeavor just to achieve the "inside the insect eye" shot, which for me was worth it; then migrated toward lower magnifications, bringing along the extra working distance of the forward-pupil objectives. This additional working distance may find uses for macros in the wild, not necessarily super-wide. Sorry I don't have many photos to show: most of my hobby enjoyment comes from fiddling with the optics by themselves, while actual shooting and post-processing, I'm not very good at those.
The techniques are actually useful and used in industry, with endoscopes and borescopes that are essentially a small macro-wide objective on the tip of a stick.

An example of macro-fisheye shots (not mine!)
https://www.flickr.com/search/?user_id= ... xt=fisheye
The educational video for ants ("how to clean your nest and avoid diseases") rapped by Attenborough (plays only with IP address in UK)
https://www.bbc.co.uk/programmes/p05rgrcb

Thagomizer
Posts: 71
Joined: Fri Jan 25, 2019 2:24 pm
Location: London Ontario

Re: Micro wide angle

Post by Thagomizer »

A nice collection of information to refer to and check out. Thank you for posing this!

Argu
Posts: 23
Joined: Fri Dec 18, 2020 5:01 pm
Location: İstanbul, Turkey

Re: Micro wide angle

Post by Argu »

Hi Giorgio,

Have you seen this link,
http://forum.mflenses.com/relay-lens-sy ... 18103.html

Also frazier lens (infinity lens) might be interesting.
Or the probe lenses for advertising works or miniature in vein cameras.
Yesterday i was thinking how interesting would it be to emulate how a fly or insect sees. Today i saw your post. Very interesting topic. Would wish to see the outcomes of your interesting project.
Best luck and thank you for your inventious and genial mind.
Argu

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