PetKal Offline Dedicated FM Upload & Sell: On
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Wow, Reno, you'd take three of the best EF lens designs and have Canon mess with them ?
OK, let us take a look at some key factors which would make Canon upgrade a lens model.
(1) Increase profitability of the model. As an example, they slap a $50 IS assembly into the lens and raise the price by $500.
(2) Maintain/strengthen competitive position in the market.
(3) Reduce production costs by maintaining homology between models.....e.g., 24L and 35L used to share many common parts, assemblies and material.
(4) Respond to (potential) obsolescence of parts.
Making a good lens even better performing for the photographers community is not a Canon's objective in itself.
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