When to buy Sony.

Started May 17, 2008 | Discussions thread
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headofdestiny
headofdestiny Veteran Member • Posts: 9,226
Re: When to buy Sony.

If you're talking about Ring motor USM, than it is desirable. Sony is bringing that out now, and I have it on my 24-70, but it is more expensive, and, like Canon, it won't be on every lens. If you're talking about Canon's micro-USM, you can keep it. Screw drive is faster...sometimes it's the fastest of all. Micro-USM (aka pencil drive lens motor) is not good.

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