Sirui AF 40mm T1.8 1.33X anamorphic lens test with Sony a6700

Video of first tests of Sirui AF 40mm T1.8 1.33X anamorphic lens with my a6700 camera. Just have received this lens and decided to take it with me on a short walks with my wife and my dutchhund. It was already late evening, sunset time but the sky was scattered with clouds. Moreover, I’ve decisively chosen to test it at such low light environment and trying ti chase my wife among the trees – this would show the selectivity and reaction of lens autofocus. All shots are at 1.8 aperture, 10 bit, 4:2:2, Slog3, H265, 200Mbps codec. Shot at 60p for 24p timeline.

I am certainly satisfied with the results in video. Earlier, I was trying to take some photos with this lens and didn’t like how AF acts in single shot mode for photos. Like 70:30 hits and misses. But in video, with continuous AF + subject tracking it does pretty good job of maintaining focus on the subject. Even when it slightly goes off – it comes out natural, looks like intended or oraganic (not perfect, like focus puller person would do). Enjoy:

Further test would be focused mostly on anamorphic aspects like flare handling, desqueeze options, etc.