When you are shooting weddings, portraits, sports, wildlife, and theatrical performance, photographers tend to work in low light conditions, and this new firmware update paves the way for AF points in the EOS-1D X’s viewfinder to be illuminated in red whenever the shutter button is pressed halfway during AI Servo AF, making it far easier to view the selected point in a jiffy. This valuable feature enhances the photographers’ ability to aim the camera accurately under such conditions, and exposure-metering accuracy will be maintained as illumination is intermittent instead of continuous. Have you downloaded the firmware update already? [Press Release]