Battery life for mirrorless cameras is dismal, especially when comparing with DSLR cameras. My Canon 7DMkII does easily 1200 exposures on one battery charge and I have had times with 2000+ exposures. My X-Pro2 with the Optical Viewfinder and no image display after taking the image gives me:

  1. The original Fujifilm battery: NP-W126S: 290 exposures
  2. The no-name brand battery: NP-W126: 180 exposures

BTW, these are my numbers, from my experience.

So turning off the camera or reducing the number of functions is a good way of extending the life of the batteries. Fujifilm has the standby mode which is a combination of the auto-power and of the power management.

Auto-Power

This setting is about how long it will take the camera before it goes to sleep after no activity. * The shorter the time, the longer the battery life * The longer the time, the shorter the battery life * OFF. The camera is not supposed to go to sleep. The keyword here is: supposed. Sometimes the camera will turn itself off, even with the OFF setting. My experience has been that’s when the battery has been toward the end of its power.

Power Management

  • High performance: Fast AF and very high quality LCD/EVF display for both the image taking and the review.
  • Standard: Fast AF and high quality LCD/EVF display for both the image taking and the review.
  • Economy: Slower AF and much lower quality LCD/EVF display for both the image taking and the review.

When the camera is in standby mode, it has to monitor if the user presses the shutter button.

I have noticed that my Fujifilm cameras: X-M1, X-T10 and X-PRO2, take more time to wake up from the standby mode than turning the camera on.

So I take my photos, turn off the main switch around the shutter and turn it back on when I want to take photos. It takes me about 1 second to turn the camera on and by the time I lift the camera to my eye/viewfinder the camera is ready.