Sony ILCE-7S - Manual (Page 238)

use of a tripod or the flash is recommended. [Hand-held Twilight] and [Anti Motion Blur] in
[Scene Selection] are also effective in reducing blur.
[309] Troubleshooting Troubleshooting Shooting still images/movies
The LCD screen darkens after a short period of time
passed.
If you do not operate the product for a certain period of time, the product switches to the
power-save mode. The product exits power-save mode when you perform operations
such as pressing the shutter button halfway.
[310] Troubleshooting Troubleshooting Shooting still images/movies
The control dial or control wheel does not work.
[Dial / Wheel Lock] is on. Hold down the Fn button until the lock is released, or set the
[Dial / Wheel Lock] to [Unlock].
[311] Troubleshooting Troubleshooting Viewing images
Images cannot be played back.
Make sure that the memory card is fully inserted into the product.
The folder/file name has been changed on your computer.
When an image file has been processed by a computer or when the image file was
recorded using a model other than this product, playback on this product is not
guaranteed.
The product is in USB mode. Disconnect the product from the computer.
Use PlayMemories Home to play back on this product images that are stored on your
computer.