Category Archives: Patents

Ricoh has filed a patent for a 24-90mm f/4 full-frame DSLR lens

Ricoh has filed a patent for a 24-90mm f/4 full-frame DSLR lens. Pentax already had a 24-90mm f/3.5-4.5 SMC FA IF AL lens for K-mount: Here are the details from the patent application:

Also posted in Pentax lenses | 1 Comment

New: Ricoh patent application for 21mm f/2.4, 18mm f/2.4, 16mm f/2.4, and 14mm f/2.4 full-frame lenses

Ricoh has a new patent application for multiple full-frame lenses including 21mm f/2.4, 18mm f/2.4, 16mm f/2.4, and 14mm f/2.4:

Also posted in Pentax lenses | 3 Comments

Ricoh filed a patent for a 18-100mm f/2.8 APS-C lens

Ricoh has filed a patent for a 18-100mm f/2.8 APS-C lens (28-150mm equivalent) – here are the details:

Posted in Patents | Tagged | 2 Comments

Ricoh filed a patent for a 100-300mm f/2.8-4 SR full-frame mirrorless lens

A few days ago Ricoh filed a patent application in Japan for several full-frame mirrorless telephoto lenses: 70-300mm f/4.5-5.6 100-400mm f/4.5-5.6 100-300mm f/2.8-4 A month ago another Ricoh patent also described sumular mirrorless lenses: 70-400mm 70-300mm The third 150-600mm lens described in the patent is for DSLR cameras (equipped with image stabilization)

Also posted in Pentax mirrorless camera | Tagged , | 10 Comments

Canon patents AA filter image sensor shift simulator to minimize moiré, a technology used by Pentax for years

It seems that Canon filed a patent application for technology that is using image sensor shift to reduce the need for an AA filter:

Posted in Patents | 3 Comments

Ricoh filed two new patents for Pentax APS-C DSLR lenses

     Ricoh filed two new patents for APS-C DSLR lenses:

Also posted in Pentax lenses | 3 Comments

New: Ricoh 23mm and 28mm f/2.8 APS-C lens patent for a compact camera (new Ricoh GR maybe?).

Ricoh has a new patent for a 23mm and 28mm f/2.8 APS-C lenses designed for a compact camera (new Ricoh GR maybe?):

Posted in Patents | 6 Comments