Perfect images rely on perfect lighting. Our handy tool here at the studio that helps us achieve that is the Sekonic Light Meter. This handy cordless meter helps us determine the f/stop we should be setting our cameras to. This weather resistant meter can also tell us information such as the ISO and measuring modes. The easy to read LCD that displays icons and symbols really helps us get that perfect lighting here in the studio.
B&H Link: http://www.bhphotovideo.com/c/product/368226-REG/Sekonic_401_309_L_308S_Flashmate_Light_Meter.html