Cosina joins Micro Four Thirds system: Digital Photography Review - I've been waiting for this for a while, for one of the independent optical manufacturers to jump on the Micro 4/3 bandwagon. The fact that it's Cosina makes me particularly happy - they have a whole range of optical delights in their lineup. And the Nokton 25/0.95 announced for October is one of them. A highly light-sensitive lens in this form could make the GF1 really fun. However, focusing will then be quite a gamble at full aperture: the lens has no autofocus.