This 20mm pancake lens from Panasonic for Micro Four Thirds system cameras costs around ￡290 and sports a bright maximum aperture of f/1.7 and internal focusing.

The Panasonic 20 1.7 Lens Review for Micro 4/3 – I am back again with another lens review and this time it is one that I have had some real fun shooting for the past 3+ weeks on a daily basis. This review should be simple, right? Possibly the simplest I have ever written. Why you ask?

better than pl 25/1.4

slow AF; plastic body

cheap small opt; quality

if 40mm field of view is your thing, you've got nowhere else to go in the M4/3 system. optically, i had to just 'get over' the whole distortion and CA auto correction issue. so i did good god this thing is sharp.

light; tiny; optically superb

corner shading up till f4 not great but easily adjusted out; bad CA under certain conditions too (but dxo nukes them

This lens is sharp, lightweight, and a consistent performer in a variety of light conditions. I use this lens in conjunction with ann Olympus PEN EP-2 and it works very well. The focal length is perfect for a "walk around" lens and it's small size means the camera and lens will fit in pockets,...

This LUMIX G 20mm F1.7II lens is an update to the original LUMIX 20mm F1.7 pancake lens made popular by Micro Four Thirds system photo enthusiasts because of its razor sharpness and compact size.