I've had this lens for one month. Works well up close. Works well in low light. I've taken handheld pictures after dark. Focuses fast and precise. Not too heavy to lug around all day. I usually hand carry my camera, and even when hanging from its leash, it doesn't feel too heavy. It allows you to take pictures of entire structures, even when you're in a tight spot. You can photograph people from head to toe from just a few feet away and take portraits from just inches. You need to have the budget to buy this lens, but if you can afford it, it's worth it.
Had this lens for more than a year now and it replaced the Canon 11-24mm f4 Canon. I just lost 1 mm in the wide angle side but gained in reduced size and weight. Surprised about the quality for night photography at 12 mm, f 4, 30 seconds and ISO 4000 with tripod. Stars showed not noticeable comma of at the edge of the frame using Sony a&RIII.
I am very please with the performance of this lens and with its relatively light weight. It allows me to carry two lenses on long trips which was problematic previously. However, I received a non US version. So, beware.
I would recommend this to a friend!
Response from sony.comBy -Jen, Sony Social Support, November 17, 2018
Hi kipper64, Thank you for sharing what you like about this lens. We strongly suggest that you always buy to authorized dealers to make sure that you're getting authentic products.