Features: 1. 2 working mode: Shade Mode and Viewfinder Mode; 2. Rotatable and removable eyecup (for shade mode); 3. Anti-fogging coated front mirror keeps ghosting at minimum; 4. Magnetic mounting interface; 5. Adjustable diopter ring guarantees a focused view from the LCD screen; Specifications: Magnification: 2.5X; View Size: 70mm x 47.5cm (16:9); Compatible devices: Canon 5D III, 1Dx; Nikon D800