Zoom digital camera 1.540TVL,auto iris,with IR-cut 2.super high focus speed 3.22x,27x optical zoom Zoom digital camera27x high speed high resolution digital color zoom camera .Optical zoom:27x,with IR sensor,f=3.9~85.8mm,0.05Lux/F1.2 (Color mode) , 0Lux/F1.2 (B/W Mode),S/N ratio>60dB(strengthen),On Screen Display, baud rate( 2400/4800/9600 selectable),manual/digital auto focus,auto white balance, ...