Sony Cyber-shot DSC-RX100 IV - Manual (Page 222)

On moisture condensation
If the product is brought directly from a cold to a warm location, moisture may condense
inside or outside the product. This moisture condensation may cause a malfunction of the
product.
To prevent moisture condensation when you bring the product directly from a cold to a
warm location, first put it in a plastic bag and seal it to prevent air from entering. Wait for
about an hour until the temperature of the product has reached the ambient temperature.
If moisture condensation occurs, turn off the product and wait about an hour for the
moisture to evaporate. Note that if you attempt to shoot with moisture remaining inside the
lens, you will be unable to record clear images.
On the functions available with the product
This camera is compatible with 1080 60p or 1080 50p-format movies. Unlike traditional
standard recording modes, which record using an interlacing method, this product records
movies using a progressive method. This increases the resolution, and provides a smoother,
more realistic image.
The camera is compatible with 4K 30p/4K 25p/4K 24p-format movies. You can record
movies in higher quality.
Notes for when on board an airplane
In an airplane, set [Airplane Mode] to [On].
On image data compatibility
This product conforms with DCF (Design rule for Camera File system) universal standard
established by JEITA (Japan Electronics and Information Technology Industries
Association).
Playback of images recorded with your product on other equipment and playback of
images recorded or edited with other equipment on your product are not guaranteed.
Notes on playing movies on other devices
Movies recorded by your camera may not be playable properly on other devices. Also,
movies recorded by devices other than your camera may not be able to playback on your
camera.
Discs of AVCHD movies recorded by your camera can only be played back on devices
supporting AVCHD format.
DVD players and DVD recorders do not support AVCHD format, so they cannot playback
AVCHD movie discs.
Also, if a high definition image quality (HD) disc recorded with AVCHD format is inserted
in either of DVD players or DVD recorders, the disc may be unable to eject from the
device.