Some cameras include frame integration techniques to attempt to overcome the problems of obtaining clear images in poor light. A slow shutter speed is used to capture enough light in dark areas of the scene.
Bosch increases sensitivity in the DinionXF by improving the image accumulation time. Reducing the shutter speed increases accumulation time and sensitivity even further. Conventional security cameras are limited by the frame rate of the surveillance monitor to a maximum of 1/50 second (or 1/60 second). The DinionXF overcomes this by decoupling image accumulation from the video output with a feature called SensUp. This greatly enhances the effective sensitivity. The accumulated image is stored in memory and sampled every 1/50 second (or 1/60 second) to create a video-compatible output signal, with the memory being refreshed with a new image every 1/5 second. The advantage of SensUp is that instead of functioning in steps, as in most cameras, it uses continuous shutter speed adjustment for very smooth video level control. This makes it most effective in situations where there is no artificial lighting.
