Olympus E300 - 14-54mm f/2.8-3.5 Zuiko ED Digital SLR Lens Basic Manual page 27

Each time you press the shutter button, the memory gauge lights on the
control panel screen, indicating that the picture you have just taken is being
recorded onto the card. The memory gauge changes according to how many
pictures the camera is processing.
Shoot
Before taking
any pictures
(Off)
Press the shutter button gently. If it is pressed hard, the camera may move and pictures
may come out blurred.
Never remove the battery, card or AC adapter while the card access lamp mark is
blinking. Doing so could destroy stored pictures and prevent storage of pictures you
have just taken.
When taking pictures against strong backlight, the area of the picture in shadow may
appear colored.
Shoot
After taking one
picture
(Lit)
Note
Shoot
Wait
After taking
several pictures
(Lit)
Wait until the indicator
turns off again before
taking more pictures.
Shooting
Maximum reached
(All lit)
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