Another Pentax 70-300mm f/4.5-5.6 lens patent field in Japan

Rumors for a new HD Pentax-D FA 70-300mm f/4.5-5.6 ED PLM WR SR lens have been going on for a while – see also the latest Pentax lens roadmap that indicates a similar zoom lens:

A corresponding 70-300mm lens was already filed by Ricoh back in 2020. Another 70-300mm f/4.5-5.6 lens patent was just listed online in Japan:

Here are the details:

Patent number P2022171866
Title of the invention: A zoom lens system and an imaging device equipped with the same
Kind Code: A zoom lens system capable of reducing size and weight while satisfactorily correcting various aberrations and an imaging apparatus equipped with the zoom lens system are provided
Release date: 2022-11-11
Application date: 2022-09-20
Example 1:
- Focal length: 72.2-293.1
- F-value: 4.56-5.52
- Back focus: 38.3000-57.4397

Rumors about two new Pentax lenses: 70-300mm f/4.5-5.6 and 50-135mm f/2.8

Pentax DFA 70-300mm f/4.5-5.6 SR lens patent

Updated Pentax K-mount lens roadmap (October 2021)