Tamron lenses with Piezo Drive autofocus motors, based on standing wave ultrasonic technology. Tamron claims these are able to deliver fast and quiet autofocus, as well as allow for more compact lens designs.
On sale: 14th Feb
We introduce the new and improved look of What Digital Camera with 102 camera reviews, while in a high-resolution battle, the Sony A7R and Nikon D800E go head to head, plus we've put together an essential guide to Wi-fi.
Which of the new cameras announced so far this year are you most excited about?
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