Adding "spacer" between an infinite objective and tube lens

[mjkzz]

Hypercentric, I think Edmunds sells lenses designed for that. Also Pericentric, the edges go the opposite way, they look out so you can see 360 degrees with pericentric lenses.

360 degrees!!! That is awesome, thanks for the info.

I know NOTHING about this stuff, I think I read something about this effect, could not imagine it in real life, but now here it is.

[rjlittlefield]

Here is a MUST SEE video (to me) while playing with iris (thanks to ADi) placed in the "infinity space". A "MUST SEE" video if you have not seen what hypercentric effect is

https://youtu.be/PtChcgA_cac

That's a good demo.

For explanation, see viewtopic.php?p=50750#p50750 , in the FAQ: Stopping down a lens combo thread.

--Rik

[mjkzz]

For explanation, see viewtopic.php?p=50750#p50750

Yup, that is the one and it was done 12 years back!!!

I listened to ADi and tried putting a disk with a small hole between tube lens and a 4X objective (aka China objective), I know this objective is not telecentric, but the stacking results from normal and reversed are almost identical in sizes, suggesting one property of telecentricity is met. So I was rushing to use that iris and finally made it. When I was positioning the camera, I noticed the hypercentric effect. Then the rest

Anyways, thanks for all the posts, learned here more than I could ever expect.