What Lenses/Techniques Produce "3D-like" Images?

[Michael Erlewine]

I  like the effect and the affect of these photos.

[BruceSD]

I  like the effect and the affect of these photos.

Thanks Michael, I like these photos too.

By the way, I'd like to thank you for your All-Music Guide website!   I never buy any music without checking the ratings and reviews on that music on your website.  I find that I've usually found your ratings and reviews to be spot on.

[MEPER]

Maybe the best classic Heliar to get for adapting to modern cameras is the 10.5 cm f/3.5 Heliar. It was made for 6 x 9. I have one of those.
I found an example here:
https://www.flickr.com/photos/123544864@N06/51163610259/in/photostream/
It seems the photographer has tried a lot of vintage lenses so if you press the arrows to show more images he writes which lens is used.

Here the 10.5 cm f/4.5 is used:
https://galactinus.net/vilva/retro/eos350d_heliar.html
https://galactinus.net/vilva/retro/heliar_bokeh.html

One more here where 10.5 cm f/3.5 is used:
https://www.flickr.com/photos/123544864@N06/50221489007/in/photostream/

The lens can make the background quite soft and blurry which I think contributes to the 3D effect. Also how the transition is from sharp to blurry is important. Then the lens needs to be able to render rather sharp where image is in focus.

[MEPER]

The image shot with this Angénieux lens does not look "too bad"?
https://www.flickr.com/photos/123544864@N06/51155121281/in/photostream/

I have no idea what kind of lens it is or how it looks.

A 50/1.5 version looks like this it seems:
https://www.invaluable.com/auction-lot/angenieux-f-leica-m39-1-5-50mm-type-s21-234-c-da140219fa
But then we have to do with rare lenses and a 10.5 cm Heliar is a bit more affordable or another vintage lens that can create soft bokeh.
The old large format or medium format lenses has a natural long focal length which can isolate the subject even that they are not very fast.

[MEPER]

Maybe the image about shot with 40/1.5 Angenieux was just a projection lens like this?
Then it is probably a cheap lens.....or at least cheaper than the 50/1.5 M39 type lens.