You asked
Olympus pen e p7 vs panasonic lumix g9 ii?
Both cameras use the same Micro Four Thirds sensor size, so the choice comes down to what you want from the body. The Olympus PEN E-P7 is the small, quiet one: a rangefinder-style body with no viewfinder and a colour/monochrome switch, ideal as a walkaround camera. Pair it with the Olympus M.Zuiko 17mm f/1.8 for a light kit that frames like a 35mm.
The Panasonic Lumix G9 II has more resolution at 25.2 megapixels against the E-P7's 20.3, and it's the better pick if you want to crop hard or print large. It's a bigger camera, so carry it when the photos matter. For zoom range on either body, the Panasonic Leica DG 12-35mm f/2.8 is a solid everyday choice.
Written by Claude from this site's pages.