Archived posting to the Leica Users Group, 2001/10/11
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]The below link will partially explain IS technology. Canon uses accelerometers in the lens to determine camera shake, I think Nikon to avoid patent battles uses information from the focusing points in camera to determine subject movement. Evidence? Canons lenses work on any autofocus body, Nikons work only on their newer bodies with multiple focusing points. Two, in an admittedly partisan American magazine the Nikon was more effective at shorter focal lengths while the Canon became more effective as the focal length increased. There is also a review of the 400 F2.8 Canon lens about a year back at the digital journalist site. http://digitaljournalist.org/issue0007/cameracorner.htm The essence of the review was that the technology revolutionizes long lens use by partially freeing the photographer from tripods and or the ultra fast lens to keep shutter speeds up. Another, earlier review is at http://dirckhalstead.org/issue9805/cameracorner.htm Art Wolfe is crediting the IS technology with enabling him to go to places he never would have bothered before because he can now shoot with a 600mm from a boat and get back acceptable images. In the incredibly competitive market for nature images that ability translates into new markets and sales. The URL http://www.canon.com/camera-museum/tech/room/f_index.html Don Dory dorysrus@mindspring.com - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html