Hello there, i am a new member of this forum. Just wondering if anyone can give me a suggestion. I tested my Sony a7ii with MF Canon FDn 500mm f/4.5 L lens, mounted on a CF tripod (Sirui N-2204), steady shot set at 500mm then shot on and off both mode, shutter speed around 1/800 to 1/1500 but can not get a sharp image. I even can see on the magnified LCD (without touching anything) the picture is not stable, kind of vibrating. Is it camera problem or Tripod? Please help me.Thank you.