Patent: Optical Formula for New EF 24-70mm f/2.8L

Northlight has uncovered a patent relating to a zoom lens design with two aperture stops. Within the patent are two different optical formulas, one for an EF 16-35mm f/2. 8 and another for an EF 24-70 f/2.

8. According to Northlight: The aim is to produce a zoom lens with constant minimum aperture, but having small variations Read more. . . .

patent optical formula 24-70mm

2018-6-29 19:43

patent optical → Результатов: 8 / patent optical - фото


Patent: Optical Viewfinder for Mirrorless Camera

Here’s a strange patent application from Canon, an optical viewfinder adaptor for a mirrorless camera. Canon News breaks down Japan Patent Application 2018-005126: This adapter would provide the half mirror assembly that would split the optical path between the image sensor and the viewfinder, and allow for simutaneous use of the image sensor and that Read more... canonrumors.com »

2018-01-11 18:42