The Leica M Monochrom is not only unique in the digital camera world as one of only a few digital rangefinders, but also the world's only black and white only digital camera.
Leica M Monochrom (Typ 246) Review
Filters camera filters' Reviews
Leica M Monochrom Review
Thorsten Overgaard's Leica Photography Pages- Leica M Monochrom
Leica M Monochrom (Typ 246) Review - Amateur Photographer
Perfection for Black & White Photographers: Review of the Leica
Leica M Monochrom (Typ 246) Review
Leica M Monochrom Digital Rangefinder Review
Leica M10 Monochrom review
Leica M Monochrom digital camera sees black-and-white
Leica M Monochrom - Wikipedia
New M11 Monochrom Review — LSI - Leica Society International
Review: Leica M Monochrom Typ 246
Review: Leica M Monochrom is Not Quite a Black and White Decision
Thorsten Overgaard's Leica Photography Pages - Leica M Monochrom