1. A photographic lens test target (10) adapted to be mounted on an elongated flourescent light tube (12), comprising: an elongated strip of opaque, sheet material sized so that it can be fitted over the flourescent light tube (12) with acurvature similar to that of the tube (12), the strip being sufficiently flexible that it can be coiled into a small coil for easy and compact carrying, the strip having a plurality of accurately spaced and sized holes (18) formed therein so that when the strip is fitted over the light source (12) a standard light pattern is created so that photographs taken of the standard light pattern can be analyzed to determine the accuracy of the optics of the camera making the photographs.