Storage medium, lens apparatus, image pickup apparatus, processing apparatus, camera apparatus, method of manufacturing lens apparatus, and method of manufacturing processing apparatus

A lens apparatus configured to form an image, the lens apparatus comprising a storage storing correction data for obtaining a correction amount for correcting image data, obtained from an image formed by the lens apparatus, with respect to a distribution of a light amount in the image and a communication device configured to transmit the correction data to an external apparatus,

• wherein the correction data includes a coefficient of an n-th order polynomial (where n is a non-negative integer) with respect to an image height h, the coefficient corresponding to a state of the lens apparatus,
• wherein the coefficient satisfies a first inequality
• −0.15≤dD′(h)−dDlens(h)≤1.98,
• where dDlens(h) represents a change amount of the light amount at the image height h per an increase amount dh of the image height h, and dD′(h) represents a change amount of an inverse of a value of the n-th order polynomial at the image height h per the increase amount dh.

An image pickup apparatus comprising:

• a lens apparatus, and an image pickup element configured to receive an image formed by the lens apparatus,
• wherein the lens apparatus is configured to form an image, the lens apparatus comprising a storage storing correction data for obtaining a correction amount for correcting image data, obtained from an image formed by the lens apparatus, with respect to a distribution of a light amount in the image and a communication device configured to transmit the correction data to an external apparatus,
• wherein the correction data includes a coefficient of an n-th order polynomial (where n is a non-negative integer) with respect to an image height h, the coefficient corresponding to a state of the lens apparatus,
• wherein the coefficient satisfies a first inequality
• −0.15≤dD′(h)−dDlens(h)≤1.98,
• where dDlens(h) represents a change amount of the light amount at the image height h per an increase amount dh of the image height h, and dD′(h) represents a change amount of an inverse of a value of the n-th order polynomial at the image height h per the increase amount dh.