Photographing lens
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsMasahiro Kawasaki, Hiroyuki Takahashi, Shigeru Iwamoto
Life of this patent
Estimating the term…
Abstract
A photographing lens which can be detachably attached to a camera body includes a memory for storing steady lens data which is constant, regardless of photographing conditions, and variable lens data which vary in accordance with the photographing conditions. A data reader reads the steady lens data and the variable lens data corresponding to the photographing conditions and then outputs the data read from the memory.
Claims12
A photographing lens adapted to be detachably attached to a camera body, comprising:
- memory means for storing respective steady lens data in a group of steady lens data that are constant regardless of photographing conditions, and variable lens data that vary in accordance with said photographing conditions, said respective steady lens data being stored at first predetermined addresses in a steady lens data area of said memory means, respectively, said variable lens data being stored in a variable lens data area of said memory means different from said steady lens data area;
- and
- data reading means for reading the data stored in said memory means;
- and
- said group of steady lens data further comprising address data for identifying said variable lens data area, said address data being stored at second predetermined addresses in said steady lens data area of said memory means;
- whereby respective variable lens data are read by said data reading means based upon said address data read from said second predetermined addresses and said photographing conditions.
A photographing lens adapted to be detachably attached to a camera body, comprising:
- memory means for storing steady lens data that are constant regardless of photographing conditions, and variable data that vary in accordance with said photographing conditions, said respective steady lens data being stored at first predetermined addresses in a steady lens data area of said memory means, said variable lens data being stored in a variable lens data area of said memory means different from said steady lens data area, said memory means further comprising means for storing address data for identifying said variable lens data area, said address data being stored at second predetermined addresses in said steady lens data area;
- and
- reading means for reading said steady lens data and said address data stored in said steady lens data area, and for reading respective variable lens data based upon said address data read from said second predetermined addresses and said photographing conditions.
Dependencies are inferred from the claim text.