Cameras with longer battery life can take more photos before exhausting their batteries.
Special note: The measurement standard for battery life stipulates that if a camera has an internal flash, it must be used for 50% of photos taken. For this reason, comparisons of one camera with an internal flash to another without will not be comparable
20x zoom ranges from very wide to ultra telephoto; Wide range of exposure settings, including Manual, plus many auto modes; Full HD video at 1080p; Video autofocus and zoom while shooting, HDMI interface; Very good image quality; Built-in GPS.
Tight control placement; Low battery life; Soft corners at wide angle; Small front fingergrip; No live histogram. No raw mode.
AF speed vastly improved; Increased continuous frames per second (JPEGs at 12.5fps vs 10fps in G15); Solid build and ergonomic, comfortable feel; Excellent f/1.8-2.8 5x optical zoom lens; Advanced photographic features, including PASM dial and RAW capture; Dedicated ISO button; Customizable buttons; Excellent macro mode; 1080p/60fps Full HD video.
LCD screen not articulated; Larger design makes it not very pocketable; Optical viewfinder not very accurate; RAW burst shooting still slow; Wi-Fi is clunky to set-up & no remote shooting capabilities; No built-in GPS.