Percentage of a pixel which is sensitive to light. Fill factor is reduced by circuitry and any light-shielded charge transfer areas, although it can be increased by a formation of microlenses.
On sale: 29th Aug
Highlights this month include your essential guide to using prime lenses, plus 36 tips for better landscape images in our brand new 12-page Technique series, and we help you take control of your ISO settings. Plus much more!
Which of the new cameras announced so far this year are you most excited about?
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