Camera body for receiving first and second image plane transfer coefficients

A camera body comprising:

• a receiver configured to receive a signal from a lens barrel comprising an imaging optical system comprising a focus adjustment lens;
• an image sensor configured to capture an image formed by the imaging optical system;
• and
• a controller configured to control the receiver to receive a first image plane transfer coefficient and a second image plane transfer coefficient,
• the first image plane transfer coefficient corresponding to a value of TL/TI and being determined in correspondence with a position of the focus adjustment lens,
• the second image plane transfer coefficient being greater than a minimum value of the first image plane transfer coefficient from the lens barrel, and
• the TL being an amount of movement of the focus adjustment lens, and the TI being an amount of movement of an image plane of the imaging optical system.

A camera body comprising:

• a receiver configured to receive a signal from a lens barrel comprising an imaging optical system comprising a focus adjustment lens;
• an image sensor configured to capture an image formed by the imaging optical system;
• and
• a controller configured to control the receiver to receive a first image plane transfer coefficient and a second image plane transfer coefficient,
• the first image plane transfer coefficient corresponding to a value of TI/TL and being determined in correspondence with a position of the focus adjustment lens,
• the second image plane transfer coefficient being less than a minimum value of the first image plane transfer coefficient from the lens barrel, and
• the TL being an amount of movement of the focus adjustment lens, and the TI being an amount of movement of an image plane of the imaging optical system.