Enginel

You mean, what is the best design for a wide angle lens intended for producing rectilinear images? If your users have old software, low MP sensors then it's best to make it rectilinear (i.e. ...

Yes, faces appear stretched when at borders of wideangle image. This is a feature, not a bug. "zero-d" in this case means flat objects would be rendered with straight lines, and this property is ...

There isn't. There's infinite possible projections. A lens has y(θ) and it doesn't itself its intended use case. Some lenses that your optical bench displays as "rectilinear with >10% distortion" ...

In a perfect world, this would be just shown by software by using already existing OPSDAF points, typically there different rows optimized for different  exit pupil locations

Offtopic, what else do you think was shoved down in consumer electronics? Uh, unfortunately it doesn't always work like so.

Could you be more specific? Which FOVs and entrance pupil separation you want? If parrallax >7cm is allowed you can just use mutiple camera rigs and trigger cameras as same time. You can also ...

Thanks. Example 1 has FOV of 23.5 degrees, that's 104 mm in 35 equiv terms. Very wide for catadiotpric lens. Are paraxial FLs  ever useful anyway for mirror lenses with aspheres?

Why care about that HDR displays at all? Low intensity means user would have to switch off all sources of light in their room to view your shadows in your image. High intensity means user's eyes ...

here's two https://patents.su/6-2000587-zerkalno-linzovyjj-obektiv.html and for these there's missing data https://patents.su/3-1675826-fotograficheskijj-zerkalno-linzovyjj-obektiv.html https://pat ...

A patent for catadioptic lens for smartphone (~240 mm equiv, f/1.7), not in production https://patents.google.com/patent/US11372220B2/en I saw a patent for a similar Tamron lens which is probably ...

What do you see interesting in this lens design? Maybe if you're used to look at diagrams of lenses made for ILCs wth FP shutters and mirror boxes, then this one is very unlike of them. This lens ...

Why does a 1" camera has to be high-end?  I guess many would be happy to buy a low-end 1" camera. Btw, the Kodak camera with two sensors and two lenses wasn't high-end.

Aaah, folk science. Probably these lenses are somewhat similar optical configurations, both slightly telephoto. Hint: if you do same with 24-105 or 100-400 lens set at 100, you'd get different ...

It's still much longer than hitting a key, and many pro photogs carry multiple bodies with different lenses on them. Dust might get inside and keeping track where you put lens caps requires ...

Why? Many people, including those on this forum, wrote that sensor cost grows exponentially with size.  But then, looking at shelf which has 1" compact camera at about same price as nearby 1.5 ...

Did you just meant to say that SLR lenses require longer back focal distance? If so, then phrasing it via cardinal plane location is weird way to say it.

No. Some counterexamples increasing focal length at closer focus: https://www.photonstophotos.net//GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/JP2018-180366_Example01P.txt,figureOpacity ...

You can't measure focal length from nodal point because the knowing position of nodal point requires knowing focal length itself Sounds smart, but... rear nodal point is being f' forward from focal ...

...if you mount F DX 18-55 on mirrorless via adapter shorter than to compensate for flange distance different, you can use it as 16 mm lens... (similar things are true for most SLR lenses).

I was wrong in what I thought you were referring to. Then I thought you were referring to screwdrive motor in SLR, and that was wrong too. I agree, focus scroll on rangefinders is a bad thing. But ...