Archived posting to the Leica Users Group, 2001/10/11

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Subject: Re: [Leica] Image Stabilization revolutionises telephoto available light?
From: "Don Dory" <dorysrus@mindspring.com>
Date: Thu, 11 Oct 2001 09:42:17 -0400
References: <LPBBLMODPGDGLIJJINOAMEAIFBAA.straightline@btinternet.com>

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

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In reply to: Message from "Brian McCarthy" <straightline@btinternet.com> (RE: [Leica] Image Stabilization revolutionises telephoto available light?)