US 11,809,073 B2
Apparatus, control method, and storage medium
Tatsuo Takatori, Tokyo (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jun. 29, 2021, as Appl. No. 17/362,564.
Claims priority of application No. 2020-115380 (JP), filed on Jul. 3, 2020.
Prior Publication US 2022/0004082 A1, Jan. 6, 2022
Int. Cl. H04N 23/73 (2023.01); G03B 7/099 (2021.01); G03B 11/00 (2021.01); G03B 9/02 (2021.01)
CPC G03B 7/099 (2013.01) [G03B 9/02 (2013.01); G03B 11/00 (2013.01); H04N 23/73 (2023.01)] 19 Claims
OG exemplary drawing
 
1. An apparatus that includes an imaging unit and is capable of controlling an aperture diameter of a diaphragm for adjusting quantity of light entering the imaging unit, the apparatus comprising:
at least one processor; and
a memory coupled to the processor storing instructions that, when executed by the processor, cause the processor to function as:
a photometry unit;
a control unit configured to control a plurality of control values including the aperture diameter of the diaphragm, based on a result of photometry using the photometry unit;
a first determination unit configured to determine whether light flux entering the imaging unit enters via a predetermined optical member; and
a second determination unit configured to determine, in a case where the light flux enters the imaging unit via the predetermined optical member, whether there exists a plurality of F numbers that indicates the aperture diameter of the diaphragm at which approximately identical quantities of light enter the imaging unit,
wherein the predetermined optical member has light transmitted in quantities varying stepwise in a radial direction with respect to an optical axis, and
wherein, in a case where there exists a plurality of F numbers at which approximately identical quantities of light enter the imaging unit, the control unit controls the F number to be differently set in accordance with information regarding a condition.