Crowdfunding backers can pick up the lens for $639 / £503 / AU$981 on Indiegogo, which is 20 percent off the expected list price. Sirui is also offering a bundle that pairs the lens with a tripod.

Plenty of deals from SIRUI with up to 48% off a wide range of products from lenses to tripods, and it's sweetening the deals with some freebies: a free AM-MTA for orders over $300 and a free 3T-R for ...