the image is too dark and too soft Solution: Try using brighter lighting. Otherwise, set a
lower aperture value, i.e. open up the aperture.
the image is not sharp enough Solution: Autofocus may not work properly in poor lighting
conditions. Try using brighter lighting. To avoid blur caused by
shaking the camera when you press the shutter release button, use a
tripod or automatic shutter release.
flash causes glare Solution: Disable flash. If there are no additional light
sources available, shoot at a small angle to prevent the light from
being reflected directly into the lens.