Apparatus, its control method, and storage medium

1. An apparatus comprising:

at least one processor;

a memory coupled to the at least one processor storing instructions that, when executed by the at least one processor, cause the at least one processor to function as:

a first operation member;

an assigning unit configured to assign one of a plurality of functions to the first operation member; and

a second operation member configured to enable a user to provide a focus lens sensitivity setting as a setting relating to a focusing function among the plurality of functions,

wherein the assigning unit is further configured to assign the focusing function to the first operation member according to an operation of the second operation member, and

wherein the second operation member enables the user for setting focus lens sensitivity that is a moving amount of a focus lens to a rotating amount of the second operation member when the focusing function is assigned to the first operation member.

2. The apparatus according to claim 1 ,

wherein the at least one processor further functions as a selecting unit provided separately from the second operation member,

wherein the assigning unit assigns a function among the plurality of functions selected by the user to the first operation member through the selecting unit.

3. The apparatus according to claim 2 , wherein in a case where a function assigned to the first operation member has been changed from a function different from the focusing function to the focusing function by the operation of the second operation member, the selecting unit informs the user that the focusing function has been assigned to the first operation member.

4. The apparatus according to claim 1 , wherein when the second operation member is operated while the focusing function is assigned to the first operation member by the operation of the second operation member, the assigning unit assigns the function to the first operation member that was assigned before the focusing function among the plurality of functions is assigned.

5. The apparatus according to claim 1 , further comprising a lens barrel,

wherein the first operation member is a ring member rotationally operable around the lens barrel, and

wherein the second operation member is a member operable differently from a rotational operation around the lens barrel.

6. The apparatus according to claim 1 ,

wherein the second operation member is an operation member configured to set the moving amount of the focus lens to an operating amount of the first operation member.

7. The apparatus according to claim 1 , wherein a function that is not the focusing function among the plurality of functions includes at least one of operation functions of a diaphragm, shutter speed, white balance, and ISO speed.

8. The apparatus according to claim 1 , wherein the apparatus is a lens apparatus attachable to and detachable from an image pickup apparatus, and

wherein the assigning unit assigns the focusing function instructed by the image pickup apparatus to the first operation member according to the operation of the second operation member.

9. The apparatus according to claim 1 , wherein the apparatus is a lens apparatus that includes an optical system and is attachable to and detachable from an image pickup apparatus or an image pickup apparatus that includes an optical system.

10. An apparatus comprising:

at least one processor;

a memory coupled to the at least one processor storing instructions that, when executed by the at least one processor, cause the at least one processor to function as:

a first operation member; and

a second operation member configured to enable a user to provide a focus lens sensitivity setting as a setting relating to a focusing function among a plurality of functions; and

a control unit configured to provide control relating to the focusing function based on an operating amount of the first operation member according to an operation of the second operation member,

wherein the second operation member enables the user for setting focus lens sensitivity that is a moving amount of a focus lens to a rotating amount of the second operation member when the focusing function is assigned to the first operation member.

11. The apparatus according to claim 10 , further comprising a lens barrel,

wherein the first operation member is a ring member rotationally operable around the lens barrel, and

wherein the second operation member is a member operable differently from a rotational operation around the lens barrel.

12. The apparatus according to claim 10 ,

wherein the second operation member is an operation member configured to set the moving amount of the focus lens to an operating amount of the first operation member.

13. The apparatus according to claim 10 ,

wherein the second operation member is an operation member configured to set use of manual focus among autofocus and the manual focus.

14. The apparatus according to claim 10 , wherein a function that is not the focusing function among the plurality of functions includes at least one of operation functions of a diaphragm, shutter speed, white balance, and ISO speed.

15. An image pickup apparatus attachable to and detachable from a lens apparatus,

the lens apparatus including:

at least one processor; and

a memory coupled to the at least one processor storing instructions that, when executed by the at least one processor, cause the at least one processor to function as:

a first operation member, and a second operation member operable configured to enable a user to provide a focus lens sensitivity setting as a setting relating to a focusing function among a plurality of functions, the image pickup apparatus comprising:

at least one processor;

a memory coupled to the at least one processor storing instructions that, when executed by the at least one processor, cause the at least one processor to function as:

a control unit configured to assign the focusing function to the first operation member according to an operation of the second operation member, and

wherein the second operation member enables the user for setting focus lens sensitivity that is a moving amount of a focus lens to a rotating amount of the second operation member when the focusing function is assigned to the first operation member.

16. A method of an apparatus that includes a first operation member and a second operation member, the method comprising:

assigning one of a plurality of functions to the first operation member; and

determining an operation of the second operation member configured to enable a user to provide a focus lens sensitivity setting as a setting relating to a focusing function among the plurality of functions,

wherein the assigning assigns the focusing function to the first operation member according to the operation of the second operation member, and

wherein the second operation member enables the user for setting focus lens sensitivity that is a moving amount of a focus lens to a rotating amount of the second operation member when the focusing function is assigned to the first operation member.

17. The method according to claim 16 , wherein when the second operation member is operated while the focusing function is assigned to a first operation member by the operation of the second operation member, the assigning assigns the function to the first operation member that was assigned before the focusing function among the plurality of functions is assigned.

18. A non-transitory computer-readable storage medium storing a computer program that causes a computer to execute a method, the method comprising:

assigning one of a plurality of functions to the first operation member; and

determining an operation of the second operation member configured to enable a user to provide a focus lens sensitivity setting as a setting relating to a focusing function among the plurality of functions,

wherein the assigning assigns the focusing function to the first operation member according to the operation of the second operation member, and

wherein the second operation member enables the user for setting focus lens sensitivity that is a moving amount of a focus lens to a rotating amount of the second operation member when the focusing function is assigned to the first operation member.

19. The non-transitory computer-readable storage medium according to claim 18 , wherein when the second operation member is operated while the focusing function is assigned to a first operation member by the operation of the second operation member, the assigning assigns the function to the first operation member that was assigned before the focusing function among the plurality of functions is assigned.