Sigma has today announced that it is to release updated HSM motor driven versions of the DC 17-70 mm and DC 18-50 mm lenses on the Nikon lens mount. For those unfamiliar with the numerous lens acronyms, HSM stands for Hyper Sonic Motor, (also known as Ultrasonic motor, Silent Wave Motor or even Sonic Direct-drive Motor) and is a faster, quieter and often more compact motor system for lenses. Essentially this should mean quieter and faster focusing.
Yeah its a great lens, I'm really happy with mine since I got it. Its nice and sharp, fairly quick to focus and I haven't seen any signs of purple fringing from it.
I have asked Sigma UK about a conon HSM and got this reposnse.
Dear Mr Greed
It is unlikely that they will produce a Canon fit HSM this year if at all. As stated in the earlier email this lens was only produced so that it is compatible with the latest Nikon cameras.
Kind Regards
Gary Rutter
Sigma Sales Dept
Sigma Imaging UK
Seems like they are being either very tight lipped or they genuimely aren't looking to produce a canon version.
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