What the Digisix not like my opinion, is cold. My few forays photo with ice and snow meant that I quickly needed a new battery. Another disadvantage is that the battery will not turn off - the unit is in continuous use and as often as you have to buy batteries. It would have been helpful to include an on-off switch. On the other hand, the device is convenient and accurate. For professional use the unit m is good. M. not quite know also my Canon analog camera has sometimes more precise and better measured than the Digisix, but this is not surprising, because the cameras have been optimized so often and EOS 3 has a sophisticated system for the exposure. On the other hand, visit the Blue Hour and other mixed light-crossing light situations where the Digisix works better.