new sigma lens - what's the point

Started Nov 12, 2009 | Discussions thread
maxT Junior Member • Posts: 49
Re: Other Issues

dlkeller wrote:

Is it HSM? Price? Weight and Size? Image Quality?

yup... IQ is a big factor or AF speed... on my old 70-300 Sigma (non APO) the best IQ/resolution was at F10-F13 with acceptable F9 (on KM 5D)...

Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow