With all the attention given to the Voigtlander 25mm f0.95 in recent days, it should be remembered that there is already one superb fast "standard" prime lens available for m4/3. The Lumix 20mm f1.7 is a wonderful lens. In an over-enthusiastic review of it
I wrote - "This is without doubt the best performance below F2 I have obtained on any lens I've used, ever."
In the time since I wrote that last October I've had no reason to change my mind. I've used the lens on Panasonic and Olympus cameras, for stills and video, and it delivers every time.
Whether used for its speed and limited depth of field at f1.7 or as a "wide\standard" lens for landscape and location work I've never been disappointed with its performance. Its on a par with my best m-mount lenses. See - /soundimageplus/2010/04/m43-and-lenses.html
Something so light and so small has no right to be so good. Its one of my favourite lenses. There's been criticism about the fact that there are in-camera corrections going on with Panasonic cameras, but you only have to use it on an Olympus m4/3 camera, which has none of these "corrections" to see that these are minimal and that its equally sharp and detailed on those cameras too.
Its a classic and if I buy the Voigtlander I have no intention of getting rid of the 20mm. Its far too useful.
Words - D
Images - D & A