Roger Hance. Смотреть видео: How Difficult Is It To Video Birds In Flight With The OM1mkII And The 150 400mm Lens, When Conditions Mean That Focus Stacking Will Not Work On The OM1mkII With The 90mm Macro Lens, Photographing Kingfishers At RSPB Lakenheath Fen Using The OM1mkII With The 150 400mm Lens, Why Have I Changed My Camera.