In the IR field 2D arrays of detectors are currently being developed for a large range of applications. In many cases it has been assumed that the "image" will be analysed by a computer rather than a human being. Such "automatic" devices may require totally different specifications from that required by the human operator. This presentation aimed at providing a visual illustration of a human observer with the 2D array image dealing in turn with: (a) Detector area fill factor
(b) Minimum number of pixels
(c) Shaping the pixel
(d) Image uniformity
(e) Noise characteristics
While no specific specification was given, the relative importance of each parameter was discussed.