I edited that image in Lightroom. Added some grain to it and gave it a more film like look. I used a preset for that and just adjusted it a bit because I am lazy.

Show thread

This is the unedited picture I took. As you can see it is squeezed and looks pretty digital (because @lastfuture asked about the analoge look).

Show thread

This is how such a setup can look like assembled. You have a camera with a spherical lens attached and in front an anamorphic adapter lens. Add a variable diopter to the front and viola you have a usable setup where you only need to focus the front diopter instead of both lenses at the same time.

Focusing both lenses can be fine if you only shoot stills but for motion pictures it is not a usable solution.

Show thread

This can be quite annoying of course but thankfully you can also use a variable diopter for focusing!

What you do is basically set both spherical and anamorphic lens to infinity. And then add the diopter in front and use that for focusing.

They basically work like this: You have two diopters which cancel each other out when they touch (=infinity) and if you space them apart their strength increases focusing the whole system closer. I attached an image of a popular diopter for this.

Show thread

You can also attach this lens to a normal photography lens and use it to record squeezed images. In order for that to work you have to focus both the normal spherical lens and the anamorphic lens to the same distance.

Show thread

This is an anamorphic adapter for a 16mm film projector. You attach it in front of the normal spherical lens the projector has to desqueeze the anamorphic image back to normal.

As you can see - looking trough the front - the back looks like an oval shape even though it is round. When looking trough the back you also see an oval opening but it is wider instead of squeezed.

Show thread

Anyway back to shooting. How can we get a wide screen image on a standard 35mm motion picture film?

Well using an anamorphic lens we can squeeze the horizontal axis giving us a compressed image which we can then by also using an anamorphic lens on the projector desqueeze to get a widescreen image.

Picture by en.wikipedia.org/wiki/User:Wap (CC BY-SA 3.0)

Show thread

I attached a picture of cylindrical and spherical lenses to this toot.

Cylindrical lenses focus light into a line, while spherical lenses focus light into a point.

Spherical lenses are typically used for normal photography lenses.

Spherical lenses image by commons.wikimedia.org/wiki/Use (CC BY-SA 3.0)
Cylindrical lenses image by ja.wikipedia.org/wiki/User:Sib (Public Domain)

Show thread

This is the last picture form that night :) In case anyone is interested I can post some more details about how lenses work.

Show thread

Dann schauen wir auch mal dieses ominöse Video, wenn es sogar schon Spotlight direkt anzeigt 😅

Nazischeiße von dem S-Bahn Fenster entfernen und an den Ort packen, wo sie hingehört...

I added a BL Touch to my Ender 3 today. So much better now ☺️

Show more
whisper.tf

The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!