Our website uses necessary cookies to enable basic functions and optional cookies to help us to enhance your user experience. Learn more about our cookie policy by clicking "Learn More".
Accept All Only Necessary Cookies
Animated Antique Posographe Ex icon

1.50.04 by The Animated Software Company


Dec 7, 2019

About Animated Antique Posographe Ex

Kaufmann Posographe (a 1920s mechanical contraption for photographers)

The Kaufmann Posographe is a fascinating mechanical contraption which was used by photographers in the early 20th Century to set their exposure times. Back then exposures were measured in seconds, and everyone in the picture had to freeze ("pose") for the entire time. Film plates were expensive and difficult to handle, so do-overs were avoided as much as possible. Over 100,000 French versions of the Posographe were sold alone, as well as tens of thousands of English-language versions. (Although this program is in English, the far more common French Posographe is depicted.)

This animation was originally created based on an article in the Oughtred Society's bi-annual journal, Spring 2019 issue, and then the lead programmer purchased an antique Posographe in order to make more accurate measurements and higher resolution photographs, to check the placement of some hidden connections, and lastly, to test the accuracy of the model against an actual Posographe. It’s very close!

Kaufmann invented and patented several versions of the Posographe and a couple of other related mechanical contraptions. The mathematical theory behind how the Posographe works was conceived around the same time, and Kaufmann apparently had a number of correspondences with the mathematician who invented the theory. Although the theory is not explained here, the math behind the Posographe is illustrated with connecting lines, colored brass plates (or not, if you prefer!), circles indicating intersecting positions of the pieces, and various additional ways of exploring "under the hood."

This program has fairly extensive math operating in the background, so it's best to have lots of battery life if running the program while on a batteries, especially if you turn on the "auto-move" feature and simply watch it run -- which is a lot of fun to do, by the way!

If using a keyboard, the following keys are available:

+ = enlarge item under mouse

- = shrink item under mouse

arrow keys = move item under mouse

enter key = guide page

a = animate Posographe

s = snake

What's New in the Latest Version 1.50.04

Last updated on Dec 7, 2019

Improved pinch-zoom/pan; added four suggested configurations and guide page; added keyboard options for zoom/pan; minor additional improvements

Translation Loading...

Additional APP Information

Latest Version

Request Animated Antique Posographe Ex Update 1.50.04

Uploaded by

عبدالكريم العبيدي

Requires Android

Android 5.0+

Available on

Get Animated Antique Posographe Ex on Google Play

Show More

Animated Antique Posographe Ex Screenshots

Comment Loading...
Languages
Subscribe to APKPure
Be the first to get access to the early release, news, and guides of the best Android games and apps.
No thanks
Sign Up
Subscribed Successfully!
You're now subscribed to APKPure.
Subscribe to APKPure
Be the first to get access to the early release, news, and guides of the best Android games and apps.
No thanks
Sign Up
Success!
You're now subscribed to our newsletter.