Sigma 17-50 f/2.8 IS focus issue

Started Jan 8, 2012 | Discussions thread
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brightcolours Forum Pro • Posts: 12,493
Yay, more nonsense

graphikal wrote:

Reverse engineering by Sigma is well known for a great many years now. If Sigma didn't reverse engineer the protocol and licensed it instead, they wouldn't have to rechip their lenses with new body releases.

You just love to troll around, don't you?

Only one time, when Canon changed something, going from the old EOS line to the digital EOS bodies around 2002, Sigma lenses had a problem when closing down the aperture.

Peter007 wrote nonsense (and you always do).

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