Sony a6000 Sony a6300 Sony a6500 X-Pro 2
LCD monitor 360 shots 400 shots 350 shots 280 shots
Viewfinder 310 shots 350 shots 310 shots 250 shots
Essa é uma explicação bem direta da Fuji sobre o assunto!
In case of X-Pro2, you have several display options. You can view in the LCD monitor, EVF, or the OVF. Let’s take a look at the chart below.
OVF consumes the least battery life and EVF uses the most. LCD stand in the middle of the two. OVF only needs the sensor to be working during the autofocus, so it consumes the least battery. The reason EVF consumes more than the LCD is EVF has finer display than the LCD. The LCD panel is smaller, but in order to show the information on the 2.36M-dot 85fps display, it requires the sensor be running fully. (*LCD is 1.62M-dot at 54fps).
Basicamente o EVF tem muita resolução, a taxa de atualização é maior e o sensor fica ligado em 100%. No LCD isso não ocorre