Image Modes
B - 146 Shots Mode
What you lose in quantity is easily made up for in quality when you select the Sportsman’s higher resolution mode.
To set your camera back to 146 Shots mode after operating in 181 Shots mode -
1 Repeatedly press the M button until the 
icon is displayed on the image LCD Panel.
2 Press the Shutter button to accept and use the new setting.
Dream tip: If you hear a repetitive beep when you press the Shutter button it means that your camera’s memory is full and you need to erase or download the images to free up space for more pictures.