Conclusion

The Olympus M.Zuiko Digital ED 17mm f/1.2 PRO delivers simply outstanding image quality. It's pin-sharp even when shooting wide-open at f/1.2, both in the centre and at the edges of the frame, something that we rarely get to say about any lens. Bokeh is beautifully rendered thanks to the 9 circular aperture blades, with the so-called "feathered bokeh" when shooting wide-open at f/1.2 delivering a subtle yet addictive look, whilst vignetting, distortion and chromatic aberrations are all very well controlled. Overall, there's absolutely nothing to complain about in terms of the image quality.

The same praise can also be applied to the Olympus M.Zuiko Digital ED 17mm f/1.2 PRO's build quality. At 390g, it doesn't weigh too much for such a fast lens, and it's very similar in size and weight to the other PRO lenses that we've reviewed, feeling perfectly at home on the OM-D E-M1 Mark II body that we used for this review. Focusing is reliably quick and accurate, while manual focusing is made very easy by the snap focusing ring and smooth, damped mechanism.

If you can afford the pro-level pricetag of £1199 / $1199, then you certainly get a pro-level lens in return. This is our favourite M.Zuiko F1.2 PRO prime lens so far, thanks to the outstanding sharpness and superb bokeh when shooting wide-open.

Ratings (out of 5)
Design	5
Features	4.5
Ease-of-use	4.5
Image quality	5
Value for money	4.5