I love the effective 18mm angle and highly recommend it, especially given the modest price.

Very well made and on my camera manual focus is highlighted (a6000) for easy use.18mm on the camera which is plenty wide

First, despite being a prime, it's not as sharp as the SONY E PZ 18-105mm F4 G OSS at 18mm

I took a vacation to NYC and this lens barely left my camera the entire time, even though I have the very decent 35mm and 50mm primes.

This lens is an absolute bargain compared to the sony 10-18mm and zeiss 12mm options.

The much expensive Touit 12mm might be sharper than this lens, but I have not noticed any loss of sharpness with this lens in my experience.

I had read the Rokinon 14mm 2.8 had heavy barrel distortion with moustache style sub-distortion

This is probably the sharpest 12mm lens you can put on a Sony E mount camera right now

(caveat: There is a wide angle zoom (11-22mm) available overseas, and supposedly Canon will continue to support the EOS-M system with other lenses later this year)