You asked
Leica m monochrom typ 246 vs leica m p typ 240?
The Monochrom (Typ 246) is the black-and-white-only version, built on the Typ 240. Both are 24-megapixel full frame rangefinders on the Leica M mount, and neither has stabilisation in the body, so your lens choice matters as much as the body.
Pick the Leica M-P (Typ 240) if you want colour, plus its bigger buffer, sapphire-glass screen and lack of a red dot. Pick the Leica M Monochrom (Typ 246) if you shoot only black and white and want a camera built around that.
Both take the same lenses. For everyday work, the Leica Summicron-M 50mm f/2 is a sensible start, and the Leica Summilux-M 35mm f/1.4 ASPH suits low light.
Written by Claude from this site's pages.