Model BS-171A BS-171F BS-171I BS-171R Pickup device 1/3-inch Sony CCD 1/4-inch Sony CCD 1/4-inch Sharp CCD 1/3-inch B/W Sony CCD Number of pixels PAL:512(H) X 582(V) NTSC:512(H) X 492(V) CCIR:512(H) X 582(V) NTSC:512(H) X 492(V) System of signal PAL/NTSC CCIR/EIA Horizontal resolution 420TV Lines 480TV Lines Minimum illumination 1.0Lux/F1.2 0.01Lux/F1.2 Lens mount Built-in 3.6mm board lens Backlight compensation Auto Electronic shutter 1/50(1/60)~1/100,000sec AGC Auto White balance Auto S/N Ratio > 48dB Gamma correction > 0.45 Operation temperature -20~50(Centigrade) Sync system Internal Video output 1.0v p-p /75 ohm Power consumption DC12V,<= 150mA Dimension(mm) 98(L) x 52(H) x 58(D) Weight(g) 238(g)