Olympus M.zuiko 17mm f/1.8 VS 17mm f2.8 VS Panasonic 20mm f1.7 ASPH review by Ming Thein: We're not there yet, but it is a good start.

"That leaves us with the three native AF options. I would not buy the 17/2.8 unless size is a critical priority, or you know that you’re going to be shooting only static objects stopped down; otherwise the slow AF speed will drive you crazy. The Panasonic 20/1.7 is in a similar boat; it’s faster to focus than the 17/2.8 and optically better, but nowhere near as fast as the 17/1.8. The 20/1.7 and 17/1.8 deliver similar resolution in the center, but they render quite differently – the 20/1.7 is . . . read more

Olympus M.ZUIKO Digital 17mm f/2.8 Review @ Photography blog

The 17-20mm lens for m43 mount group is pretty crowded, with a total of 5 lenses competing for our interest (and money) so far.

"With the lens attached to an Olympus E-P2 camera body, focusing is fairly quick but by no means instantaneous. As long as you are photographing still or slowly moving subjects, you will find the focusing speed entirely adequate. Note: given that Micro Four Thirds cameras use contrast-detect autofocus, whose speed also depends on their sensors' read-out speed, the lens may perform better on

. . . read more

Olympus M.Zuiko Digital 17mm f/2.8 at olympuslensreview

"Here goes the review of Olympus 17mm lens. You can get this lens from either Amazon (Best Price + FREE Shipping), B&H Photo Video or Adorama.

 

This lens is the first prime lens available for the Olympus Micro Four Thirds camera. It was first sold as a combo with the Olympus E-P1 but can be bought separately as well.
In the 35mm format equivalent, it gives an angle of view of 34mm. This is considered a moderate wide . . . read more

Olympus M.Zuiko Digital 17mm 1:2.8 Pancake @ DPreview

"The M. Zuiko Digital 17mm F2.8 Pancake gives acceptable results in our studio tests, but again its extreme portability comes at the cost of some optical compromises. Image quality at the centre of the frame is high, but it's less impressive towards the edges due to a combination of (relative) softness and chromatic aberration. Compared to the kit zoom, there's no hugely compelling optical advantageto the 17mm (although it's faster and more portable), and overall its performance leaves us feeling just a little 'flat'." . . . read more

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