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![USM vs STM: Canon SLR Lens Talk Forum: Digital Photography Review](https://www.iarticlesnet.com/pub/img/site/s_11.jpeg)
USM vs STM: Canon SLR Lens Talk Forum: Digital Photography Review
瀏覽:1227
日期:2024-07-07
I noticed the new autofocus mechanism in Canon's two new lenses, they include
a step motor, which is basically a brushless motor for silent ......看更多