Archived posting to the Leica Users Group, 1999/06/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]In a message dated 6/12/99 4:33:38 PM Eastern Daylight Time, 5521.g23@g23.relcom.ru writes: << My problem is the Canon IS lenses. If this really works, then why do we need fast lenses? >> The IS technology lessens the effect of camera shake, allowing handheld shooting at slower shutter speeds. To stop subject motion, you still need a faster shutter speed and therefore a wider aperture; also, a wider aperture is necessary to get the shallow DOF needed to blur the background for subject isolation, particularly with shorter lenses. DT