A Capture to Print
Sharpening Workf low
By Martin EveningThere’s much about the digital photography process that conspires to make our photos lose their sharpness.
It happens from the moment you press the shutter, as the sharpness of an image is determined first by the optical per-
formance of the lens and the softening effect of the anti-aliasing filter that covers the sensor. The demosaic process,
whereby a color image is calculated from the sensor’s color array, also results in a loss of detail. Further sharpness
is lost when you print an image, whether as an inkjet print, a lab print, or in a magazine. To overcome these obstacles
we need a sharpening strategy that tackles the loss of sharpness at both the capture and output stages.