35mm f/0.9 for $350 | Tested and Explained: Physics of Speed Booster and Crop Factoring
by Super User, 3 months ago
Jimmy Leak: https://www.instagram.com/_jleak/
The lens opening is determined by the opening of the iris inside of the lens, not by the front element.
In the tests, I should have compensated for the concentration in light with ISO. This explains why the speed booster setup gave a brighter image than other setups in these settings.
Under Section 107 of the Copyright Act 1976, allowance is made for “fair use” for purposes such as criticism, comment, new reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing.
3 months ago