Continuous illumination of backlit display and of subject for image capture

A method for capturing an image, the method comprising:

• orienting a camera including an image sensor to capture a first image of a subject;
• displaying a second image on a display oriented to be viewable by the subject;
• providing a steady light that passes through the display toward the subject to simultaneously and continuously illuminate both the second image and the subject;
• adjusting an amount of light provided responsive to a quality of the first image by adjusting the second image to adjust an amount of light that passes through the display;
• determining an ambient light level with an ambient light sensor;
• adjusting the amount of light provided responsive to the ambient light level;
• and
• increasing a brightness of dark areas of the second image relative to the brightness of light areas to increase the amount of light that passes through the display responsive to a relatively low quality of the first image.