lvguy 0 Posted March 17, 2006 what's are the differences between the two? I've seen the switches on the cams but I've never used the video driven lens. Share this post Link to post Share on other sites
rapid 0 Posted March 17, 2006 As with automatic iris lenses it's necessary to control the operation of the iris to maintain perfect picture levels. Video Type Lens: This type of auto iris lens contains internal amplifier circuitry to convert the video signal from the camera into iris motor control. This is the older style lens which is usually larger than its counterpart. DC Type Lens: This type of auto iris lens is driven by a reference voltage produced by the camera. The lens contains a driving motor to open and close the lens. In effect the camera contains the iris amplifier and operates the iris motors. Less expensive and smaller than the video type lens. Most cameras now have both types as you have discovered. Cheers.....Rapid Share this post Link to post Share on other sites
