Many people try a webcam to capture photos for their photo-id program, and then wonder why the images are poor quality.  The simple answer is that you get what you pay for.  The optics on the E300 are so good, that often you can turn the flash off.  However if you do use the flash, it is adjustable for distance and intensity, and can easily overpower ambient light, a common cause of poor quality.  Save time and effort by clicking on the subject's nose to automatically zoom and centre the face.  If you want sharp images with true flesh-tones and colours, the ISG E300 has the image quality and speed designed for your photo id program.  
ISG E300 Data sheet