Olympus 45mm F1.2 vs Olympus 45mm f1.8 Andreapazzo 4 years ago Peter Forsgård: Olympus has two very good portrait lenses, the Olympus 45mm f1.2, and the Olympus 45mm f1.8. In this video, I go through the main specs and give advice on which one you should get if you are in a need for a portrait lens.