(Update 30/08) Seems JB has dropped the price even further and is now an absolute cracker deal at $509.
On sale is one of Sony's best wide angle APSC lenses for Sony E, FF equivalent of 16.5mm on crop sensors. Sony Au lists for $699 and next cheapest seems to be $636 at Digi.
Despite being built like a toy and weighing less than a pack of Winnie blues, the image quality and value is superb. Wide open this lens presents excellent contrast, sharpness and practially no CA. A slight fall-off towards the edges but still little to no CA and minimal vignetting compared to other UWA primes. Review
For those on FF the sensor coverage is still quite good. According to this it requires roughly a 1.32x crop to remove vignetting, giving a FOV of ~14.5mm.
(Update) Have tested this lens on FF and can confirm that in full width 16:9 it requires only a ~1.25x crop to virtually remove all vignetting (with lens corrections on). This effectively makes it a 14mm 1.8 lens for $509, quite the result. For critical resolution and IQ you may want to stick with it's intended use, but for vertical social media content this lens is a no-brainer on FF given the performance.
Yeah currently looking for a decent lens for my zv-e10 that can capture low light better without weighing too much. This one's probs more than I'm willing to spend though.