To: <[email protected]>
Sent: Thursday, February 03, 2005 10:06 AM
Subject: RE: EOS The word from Sigma!
At 4:39 PM +0000 2/3/05, Hugo Lopes wrote:Just the other day a guy was asking in a forum for a good reason to buy a
Canon 180 Macro instead of the Sigma model. Non compatibility issues were
the only solid argument I came up with. Still, the Canon lens costs 2,5x the
price of the Sigma. So the question "should we Canon prices for assured
compatibility?" springs to mind. I mean, even inside Canon's line-up, EF-S
lens compatibility with previous digital bodies is not assured, as far as I
know.
....and IS lenses are not compatible with all older bodies. It's unfortunate that Sigmas have problems with compatibility, but in the final analysis, that is to be expected at some point if they reverse engineer, and even eventually, if they get everything right, because there will come a time when even current Canon EFS lenses will no longer work on the new products. See Canon's evolution from their own interpretation of (an incorrectly reverse engineered) Leica thread mount, to a correct LTM, to FL lenses, to FD lenses to EOS. It's inevitable if you want, or Canon wants to market progressive products.
On a side note, I've heard somewhere that Tamron has a better relationship with Canon than Sigma, and that is why there have been no egregious compatibility problems with their lenses. Maybe Karen N. has some information on that.
-- * Henning J. Wulff /|\ Wulff Photography & Design /###\ mailto:[EMAIL PROTECTED] |[ ]| http://www.archiphoto.com
Where did you hear that IS lenses are not compatible with older bodies? Do you mean FD mount bodies? Or do you mean the old EF-M manual focus, EF mount body, of which Canon probably sold 10, the only EF mount body that IS won't work on, because it is dependent on the AF circuitry.
Skip Middleton
http://www.shadowcatcherimagery.com
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