Digital Photography
The concept of exit pupil is not often discussed in analog photography, but has become increasingly important in digital imaging. The distance of the exit pupil from the sensor plane determines the range of angles of incidence that light will make with the sensor. Image sensors often have a limited range of angles over which they will efficiently accept light, especially those that use microlenses to increase their sensitivity. The closer the exit pupil to the focal plane, the higher the angles of incidence at the extreme edges of the field. This can lead to pixel vignetting. For this reason, many small digital cameras (such as those found in cell phones) are image-space telecentric.
Read more about this topic: Exit Pupil
Famous quotes containing the word photography:
“Too many photographers try too hard. They try to lift photography into the realm of Art, because they have an inferiority complex about their Craft. You and I would see more interesting photography if they would stop worrying, and instead, apply horse-sense to the problem of recording the look and feel of their own era.”
—Jessie Tarbox Beals (1870–1942)