This meter is undoubtedly the "first-class" family Sekonic. It has the ability to store and retrieve the profiles of digital cameras, providing notice of exposure outside the dynamic range. It 'easy to customize via computer USB port with the DTS software (PC Windows and Mac). It 'a spot meter advanced and versatile three exposure profiles for digital cameras - Notice of "out of dynamic range" - Adjusting the hue media - Spot metering 1st in reflected light - Display in 1/2 or 1/3 stop - analysis in mixed light with three different directions to light flash / ambient - 9 memory positions - with rings, accepts filters of different diameters front of the lens - Calculation multiple flashes (number of flashes unlimited) - retractable Lumisphere - Set 2 memories ISO