| CPC G03B 17/565 (2013.01) [G03B 17/14 (2013.01); H04N 23/55 (2023.01); H04N 23/663 (2023.01)] | 17 Claims |
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1. An accessory attachable to and detachable from an image pickup apparatus including an image sensor, the accessory comprising:
a memory storing:
first data indicating a first characteristic for correcting image data obtained by the image pickup apparatus; and
second data indicating a second characteristic different from the first characteristic for correcting image data obtained by the image pickup apparatus, wherein the second characteristic corresponds to a combined characteristic of:
an optical characteristic of the accessory; and
a characteristic of the image pickup apparatus; and
a processor configured to control a communication unit to transmit to an external apparatus both of:
first information based on the first data; and
second information based on the second data,
wherein the first information includes values of a first value of a focus position, a second value of a zoom position, and a third value of an aperture position associated with the first data,
wherein the second information includes the same values of the first value of the focus position, the second value of the zoom position, and the third value of the aperture position associated with the second data,
wherein the first information and the second information are in a same data format, and
wherein a correction amount of the image data by the second data is smaller than a correction amount of the image data by the first data.
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