Sony A57 - Manual (Page 202)

202
Precautions
This rechargeable battery is
continually charged as long as you
are using the camera. However, if you
use the camera for only short periods,
it discharges gradually, and if you do
not use the camera at all for about 3
months it becomes completely
discharged. In this case, be sure to
charge this rechargeable battery
before using the camera.
However, even if this rechargeable
battery is not charged, you can still
use the camera as long as you do not
record the date and time. If the
camera resets the settings to the
defaults each time you charge the
battery, the internal rechargeable
battery may be dead. Consult your
Sony dealer or local authorized Sony
service facility.
Charging method of the internal
rechargeable battery
Insert a charged battery pack in the
camera, or connect the camera to a
wall outlet (wall socket) using the AC
Adaptor (sold separately), and leave
the camera for 24 hours or more with
the power off.
On using the lenses and
accessories
It is recommended that you use Sony
lenses/accessories* designed to suit
the characteristics of this camera.
Using the products of other
manufacturers may cause the camera
not to operate to its capability, or
result in accidents and malfunctions
of the camera.
* Konica Minolta products are
included.
On memory cards
Do not attach a label, etc. on a
memory card or a card adaptor. This
may cause a malfunction.
On recording/playback
• When you use a memory card with
this camera for the first time, it is
recommended to format the card
using the camera for stable
performance of the memory card
before shooting. Note that
formatting permanently erases all
data on the memory card, and is
unrecoverable. Save precious data
on a computer, etc.
• If you repeatedly record/delete
images, fragmentation of data may
occur on the memory card. Movies
may not be able to be saved or
recorded. In such a case, save your
images to a computer or other
storage location, then format the
memory card (page 169).
• Before you record one-time events,
make a trial recording to make sure
that the camera is working
correctly.
• This camera is neither dust-proof,
nor splash-proof, nor water-proof.
• Do not look at the sun or a strong
light through a removed lens or the
viewfinder. This may cause
irrecoverable damage to your eyes.
Or it may cause a malfunction of
your camera.