Using the 12mm lens is quick and easy, with the manual focusing ring operating smoothly. The snap-focus ring is a quick way to switch between the two modes, proving handy when speed is of the essence.
The distance indicators and depth-of-field indicators really come into their own when shooting from the hip, allowing you to judge with a relative degree of accuracy whether or not your subject will be in focus without having to check the back of the screen.
The all-metal casing lends the lens an air of quality, while still maintaining a low weight to keep the overall weight of the system down while in use. A good walkaround lens, the 24mm equivalent length is good for a variety of subjects. In practice, we found it worked well for portraits, landscapes, street shots and more, producing sharp images with minimal drop off towards the edge of the frame.
Coupled with the ultra-quick 35 point autofocus system housed in all of the new Olympus PEN cameras, focusing using this lens is quick and easy – locking onto subjects with the minimum of fuss, which is especially useful for street shooting or blink and you'll miss it moments.
The major selling point of this lens is its maximum wide aperture of f/2.0 which allows for some creative blurred backgrounds shooting. This combines well with the creative art modes that can now be used while in aperture and shutter priority on the new PEN line-up, and it makes this a really fun lens to shoot with.
Full testing of the lens is still needed, but so far, the results are very promising.