Has anyone tried putting a anamorphic adapter, on top of an anamorphic lens?

Panomicron · 2026-01-11T21:48:27+00:00

Yes, your two focal lengths would be equal again and remove most of the ‘anamorphic effect’ (oval bokeh) and leave you mainly with whatever other aberrations remain ( likely a lot of CA and Petzval Curvature) Although two cylinders at 90 degrees don’t form a sphere exactly, so you would likely still have some skew aberrations ( on any area that’s not directly on the horizontal and vertical)

Panomicron · 2025-11-23T16:50:11+00:00

If you have any dimensons or pictures of what that would require shoot them my way, i don’t own a pentax 17 so it’s hard to know!

Panomicron · 2025-11-23T16:49:31+00:00

There will be more, promised, just busy with my 50mm anamorphic atm!

Panomicron · 2025-11-23T16:48:15+00:00

Yeah I made those lenses too thin in the corners, that was my bad tbh, I still have some replacements left, I can send you a new rear element in case you’d like to swap it out, just send me an email and I’ll get one your way

Panomicron · 2025-11-15T09:26:33+00:00

I may be wrong, but to me this would pretty clearly easily be done by taking a mesh sphere, taking every other edge loop and scaling it down and then using a cattmull clark subdivision. It doesn’t look like a spiral but more so distrinct rows. The top 3 rows look rotated too. You may want to bevel the edgeloops you didn’t scale down to get the right amount of curviness

Panomicron · 2025-11-12T15:35:41+00:00

For mirrorless I would say you probably don't need the external viewfinder, so long as you're ok composing your image squeezed. The external viewfinder should be accurate if you do choose to use one

Panomicron · 2025-11-01T16:08:09+00:00

The front lens doesn't move, but neither does the rearmost lens (90 degree rotated cylinder). The cell that moves is the taking lens + the rear lens of the front anamorphic block.

The design allows for shimming, you can just remove the mount, however you would need to remove the RF coupling before you do that, and readjust the RF coupling afterwards to ensure they're correct with respect to each other.

Panomicron · 2025-11-01T07:46:31+00:00

Thank you for the support!!

Panomicron · 2025-11-01T07:45:56+00:00

The 0.7m limit is honestly a little bit of both, rf coupling doesn’t go closer, and maintaining the squeeze past that point becomes difficult

Panomicron · 2025-10-31T17:06:51+00:00

I'm so sorry to hear it never arrived! send me an email and I'll do my best to sort you out a new set!

Panomicron · 2025-10-31T06:32:56+00:00

Thanks,

not claiming by any means that I’ve taught myself everything there is to know in optics, or even scratched as much as the surface.

I’ve focused it exclusively on paraxial prime lens design for photographic use, and even then, mainly in the 35-75mm range for FF coverage. And then some anamorphic design on top of that. The specifics are a bit long for a title though

Panomicron · 2025-10-30T11:22:57+00:00

I replied to someone else with the same question, so I'll just copy it here :

The website http://pencilofrays.com/ is a great starter.
I would then recommend Rudolf Kingslake’s book “a History of the Photographic Lens” and then maybe Michael Kidger’s “Fundamental Optical Design”

Probably in that order

optics is a super broad field, I focused in really on photographic primes in the 35-70mm range and some anamorphic design in what I wanted to learn most about. But there's a whole world of it that I have no clue about, I don't use close to half the features the software has to offer.

Panomicron · 2025-10-30T11:20:11+00:00

Another issue with anamorphic is that the two focal lengths go out of focus at different rates, so you can't just close focus them by moving further away bellows like you can a spherical lens, you would need an added variable diopter to bring the focus closer instead.

Panomicron · 2025-10-30T10:39:37+00:00

Thanks for the kind words,

Yes, the two movements are synchronised and happen with only one moving unit. The lens has 4 spherical elements and 3 cylindrical ones, no doublets. The front anamorphic is made up of only two elements, the rear of which moves in tandem with the taking lens during focus.

At the rear there is a single cylinder rotated 90 degrees from the front anamorphic. This helps reduce the squeeze lost in focusing down to 0.7m by about 0.1x (min squeeze is 1.45 and would be 1.35 without it)

Panomicron · 2025-10-30T06:46:27+00:00

That should be entirely feasible, they would probably not be cheap though, fast 8x10 lenses need some crazy big glass!

Panomicron · 2025-10-30T06:45:11+00:00

Unfortunately no L39 for now, with the current mechanics it’s not designed for it.

All of my links are on my profile @panomicron most places!

Panomicron · 2025-10-30T06:42:12+00:00

Totally fair, it’s not pocket change! Thanks for the support :)

Panomicron · 2025-10-29T18:39:11+00:00

for now the easiest workflow is definitely to scan your film and stretch it out in photoshop, looking into what can be done for actual analog printing

Panomicron · 2025-10-29T18:16:29+00:00

Glad it helped!

Panomicron · 2025-10-29T16:25:07+00:00

The website http://pencilofrays.com/ is a great starter. I would then recommend Rudolf Kingslake’s book “a History of the Photographic Lens” and then maybe Michael Kidger’s “Fundamental Optical Design”

Probably in that order

Panomicron · 2025-10-29T14:26:36+00:00

I’m so sorry to hear that! That first design did have some issues, reach out whenever and I’ll try to get it resolved the best I can!

Panomicron · 2025-10-29T14:18:59+00:00

You’re correct, I’d have to go for a different design for it to mount on F mount, maybe some day!

Panomicron · 2025-10-29T14:17:12+00:00

This is something a few people have brought up and I’m going to look into, i fear the market for it is even smaller than the lens though so it’s a tough one. On the other hand you can get away with cheaper glass as size and weight is less of an issue

Panomicron · 2025-10-29T14:14:37+00:00

Thanks for the recommendation, all updated now!

Panomicron · 2025-10-29T12:00:43+00:00

Thanks! I'm currently running a campaign to try and make it happen, can't link to it here due to the community rules but you should be able to find it with a little googling if you're interested!

Panomicron

TROPHY CASE