Sharpness really seems to be a problem.jbeale wrote:Good to know. If you are asking what ISO100 means, there are standards for that in digital photography based on illumination in EV and the sensor response relative to full scale when aimed at an 18% reflectance grey target. It is not an arbitrary parameter, or at least ISO doesn't think so.6by9 wrote:What does ISO100 equate to in digital photography? It's really a film camera term. On OV5647 ISO100 was set as x1.0. On IMX219 it's set as x1.84.
See, for example ISO 12232:2006 "Photography -- Digital still cameras -- Determination of exposure index, ISO speed ratings, standard output sensitivity, and recommended exposure index" Here is some background: http://www.imatest.com/docs/sensitivity_ei/
jbeale, could you please try to capture a book page (as close as possible) or an A4 sheet with printed text? I'd like to know if the V2 camera could be used for a book scanner.