If you've been looking for a wide angle lens for your Sony a7R II, or any other Sony E mount lens, this is your chance to get a pretty incredible deal. The Rokinon 14mm F2.8 Full Frame Auto Focus Lens fits on to Sony E-mount cameras and is currently available at $350 off for only $499, on Amazon only. We're not sure how long this deal will last but the best price for this lens everywhere else we've looked on the internet is $150 more for $649.
If you're unfamiliar with the lens, Rokinon, also known as Samyang, made this lens available in late 2016. To get a better sense of it's build quality and utility, check out this video from digiDIRECT.
A lens this wide isn't generally a go-to lens for most shoots, but it is a perfect focal length for shooting wide scenes, such as landscapes, in low light. For instance, Patrick Hall used a similar f/2.8 wide angle lens for this astrophotography lesson.
This deal may only last a short period of time, so best act quick if you want to save.