Model No. VS8-405SNH VS8-405SN VS8-405S Image Sensor 1/3” SONY 1/3” SONY 1/4” SONY Number of pixels PAL:752(H)×582(V) NTSC:768(H)×494(V) PAL:512(H)×582(V) NTSC:512(H)×492(V) Horizontal resolution 480TVL 420TVL System of signal NTSC/PAL Minimum illumination 0.1LUX / F1.2 Lens mount C/CS Lens Fixed in 3.5~8mm Manual varifocus Lens Backlight compensation Auto Electronic shutter 1/50(1/60)~1/100,000sec S/N ratio More than 52dB Gamma correction >0.45 Operation temperature -20℃~50℃ Sync. system Internal Video output ≤1.0v p-p /75Ω