Q&A about E-M10 MKIV and M.Zuiko 100-400mm f5.0-6.3 Lens with Robin Wong and Peter Forsgård Andreapazzo 5 years ago Preorders: Olympus E-M10IV at Adorama, Bhphoto. GetOlympus. Amazon. 100-400mm at Adorama, Bhphoto. GetOlympus.