There are now institutional guidelines that define several image quality measures, and set performance requirements for image capture. Based on these, it is now common practice to monitor image acquisition performance for digital collections. Important image characteristics include the influence of lighting, lens focus, and several aspects of general imaging practice. Normally these efforts are applied to digital scanners and professional cameras. As cameras in mobile-telephone cameras have improved, however, these are sometimes used as convenient document scanners. Addressing the evaluation of image resolution and optical distortion, we describe how imaging performance can be evaluated against US federal (FADGI) and Matamorfoze guidelines. Results from our smartphone test indicate that, for the attributes tested, the unit would meet at least three-star performance for up to A4 document scanning, and possibly better. We show that it is possible to identify the domain of acquisition conditions under which these cameras can meet the requirements for cultural heritage imaging.