...then why are all the lenses round?

deep thoughts

I have wondered that as well. It is like you are not getting the whole picture around the edges. Kind of like how 4:3 cuts off the sides of 16:9 and shrinks to fit.

That's a good question.

By the way, eyeballs are round. My field of vision is actually sort of a fat oval. It would be round if not for my eye sockets and nose.

You would think that we would have imitated that reality. But we didn't.

Nessie

You... you doing okay MM? Should we be worried about you?

Sending loves.

--

On a serious note, apparently whilst the sensor itself is rectangular, it is easier to polish a perfect finish if you can spin the glass in the lens.

A smoother, more even surface to the glass and mirrors means a better picture.

very deep by it also reminds me of a reference but i can't remember the exact quote

Takes me back
https://m.youtube.com/watch?v=bVURsxuwy_E

lmao...good one MM! Never thought about that but I have thought about why do we drive on parkways and park on driveways?

Round lenses are much easier to shape (grinding and polishing on a lathe)- you'll want a perfectly consistent curve to focus the light equally. Likewise a round aperture is much much easier to design the remaining optics.

As for square photos, well theres minimal wasted material compared to cutting round plates or later developed** film reel. Today's digital photography could easily take round photos- but since we view them all on a square screen round photos would just be annoying to deal with.

(not a photographer or a historian, just my guess as an engineer)

**Pun intended. I'm not sorry.

The Snapchat glasses would take round photo's, which allowed you to rotate your phone to whatever angle of rotation and still have it display in full screen.

It was kinda a nifty concept.

if brass trumpets are made from brass and tin whistles are made from tin what the heck do they make fog horns from?

camera sensors are rectangular, its easier to make lenses round for polishing, also same as why airplane windows have round corners, easier for squares to crack, rounds have no natural stress corners

the real reason comes from people having a look around..................no one ever looked asquare

And the voice inside my head says in Phil Hartman's voice

"Deep Thoughts by Jack Handly"

A circle has the smallest ratio of perimeter to area. That also explains why bubble are spheres.

With them being round, it makes creating the convex arc easier. A convex arc focuses the light to a single point.

Photos are probably rectangles because if you take a 2-dimentional plane and separate it evenly, you get the rectangle, with enough room to prevent one shot from bleeding into another.

This is what I picked up in high school geometry and physics.