Image apparatus and evaluation method

An image-taking apparatus comprising:

• an image apparatus comprising:
• a screen configured to display an image formed by an optical system and at least one detection position superimposed onto the image;
• a detecting unit configured to detect information regarding focus of the optical system at the at least one detection position;
• a determining unit connected to the detecting unit and configured to determine whether the information regarding the focus is within a predetermined range;
• an acquiring unit connected to the determining unit and configured to acquire first image information at the at least one detection position when
• the determining unit determines that the information regarding the focus is within the predetermined range;
• and
• a control unit connected to the acquiring unit and configured to evaluate arbitrary second image information in the screen using the first image information.

An evaluation method comprising:

• displaying in a screen an image formed by an optical system;
• displaying at least one detection position superimposed onto the image;
• detecting information regarding focus of the optical system at the at least one detection position;
• acquiring first image information at the at least one detection position when the detected information is within a predetermined range;
• acquiring arbitrary image information in the screen as second image information;
• and
• evaluating the second image information using the first image information.

An image apparatus comprising:

• screen means for displaying an image formed by an optical system and at least one detection position superimposed onto the image;
• detecting means for detecting information regarding focus of the optical system at the at least one detection position;
• determining means for determining whether the information regarding the focus is within a predetermined range;
• acquiring means for acquiring first image information at the at least one detection position when the determining means determines that the information regarding the focus is within the predetermined range;
• and
• control means for evaluating arbitrary second image information in the screen using the first image information.