>No, it's Canon's fault that old third party lenses like this don't work
anymore.
Help me understand - why do old Canon lenses work and not Sigma?
Did Sigma not design to Canon's specs? Did Sigma have to guess what the
specs were and guessed wrong. Do you want cameras not to improve because it
might make some accessory unusable?
If you develop a product and lots of people make accessories to
attach to it and, of course, pay you nothing for attaching. Then is it
really your responsibility, when you come out with an updated version, to
test it with all of the accessories which have appeared to be sure your
product works with them. I think if you published your specifications,
others designed to those specifications and they were tested to the specs,
then there is some room for complaint. But if the specs were never released
(which suspect is the case) and some company chose to design for that
product, and you decided to buy (that lens for that product) I don't
understand where the complaint is. You got the lens for a camera, it worked
well and you were happy with it, and you saved money. If does not work on
the next camera - I understand the wish that it had done so, but I don't see
it as anyone's "fault". If it is anyone's fault I think it is yours. You
bought something advertised to work with a camera, it did, and now you want
to blame someone else because it does not do more.
Cal Rice
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