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: Applicant: Ricoh Co., Ltd. Publication number: P2022129113 Application number: P 2021027679 Publication date: 2022-09-05 F-number 4.1 4.1 4.1 Focal length 24.60 45.01 … Continue reading Ricoh has filed a patent for a 24-90mm f/4 full-frame DSLR lens