I saw a Dustin Abbot review of this lens on YouTube, which suddenly disappeared and said private. I guess he posted the review too early. Generally, the review was positive, showing the AF working, it was on Sony E mount. To engage AF you just twist the focus past infinity. It isn't the fastest AF, but kept up with him walking towards the camera. It as stated only works from 1.5m, not in the macro region. IQ seemed good, but he said it wasn't quite as bitingly sharp as the Laowa 90mm f2.8, but this was on a 61mp body. It was actually when I went to check back on the IQ bit, that the video change to private. I'm sure he said the weight was 520g. I'm very interested. I got a Sigma 180mm f3.5 this year in almost mint condition. For a long time the Sigma 150mm f2.8 (the old non-OS version) was my long macro lens, with the 1.4x converter - think I've had it 17 years or more. The EF version of this will suit me as I've still got a Canon 5Ds, although I have mainly switched over to RF.