Key Specifications/Special Features: NZ-27X: 1/4-inch Sony 420TV Line color CCD/0.8Lux/27x optical zoom/Lens F3.9 to 70.2mm NZ-27N: 1/4-inch Sony 420TV Line color CCD/27x optical zoom/color to B/W (color 0.8Lux, B/W0.01Lux)/Lens F3.9 to 70.2mm NZ-27R: 1/4-inch Sony 420TV Line color CCD/27x optical zoom/IR sensitive (color, 0.8Lux, IR on, 0Lux)/Lens F3.9 to 70.2mm