cshimokita[Photo Forum Moderator]
10714
Great idea... they put a man on the moon using slide rule...
Jul 20, 2019,05:33 AM
I still have mine from the 60s... haven't used it in 40 years. I did pick up a scientific calculator a couple of years ago... so useful ; ) Casey
Comments:
view entire thread
Hurter & Driffield... Actinograph
By: cshimokita : July 19th, 2019-16:37
In 1888, Ferdinand Hurter and Vero Charles Driffield patented the "Actinograph", a device for computing exposure times and apertures for cameras. It didn't measure anything, and was more like a slide rule based on the plate speed, time of day, time of yea...
Don't you just love history...
By: cshimokita : July 19th, 2019-21:39
Marion & Co. of Soho Square, London, and of Paris, maker of cameras, plates and papers and general photographic requirements was established in the 1840s by Auguste Marion. 1921 - Amalgamated Photographic Manufacturers Ltd was formed by merging seven Brit...