LUMIX S1 - LENS APERTURE FREAKS OUT

[Lukas Kalinowski]

Hi Guys I got WIRD situation with S1. I just bought samyang xp 50mm f1.2 EF lens (great lens btw). S1 closes down aperture of lens every time I hit record button/shutter. It's happening on every aperture beside f1.2. I'm using this lens with SIGMA adapter L>EF. This is not happening on any other third party lens with S1 and this adapter. This issue do not happening on URSA G2 with this lens (Lens works perfect as it should ) So I suppose that sigma's adapter do something wrong and probably firmware of lens and/or adapter/body do not corresponds proper way. It's happening in full manual mode. But maybe You Guys got some ideas ? Thanks for help. Where can i Find Samyangs officials that really could see this problem becouse i dont belive that when i will wirte to emails on their web page any one will ever respond to this : / ?