Sony ILCE-7S - Manual (Page 63)

The Metered Manual indicator does not appear when [ISO] is set to [ISO AUTO].
When the amount of ambient light exceeds the metering range of the Metered Manual,
the Metered Manual indicator flashes.
The (SteadyShot warning) indicator does not appear in manual exposure mode.
The brightness of the image on the monitor may differ from the actual image being shot.
Hint
By setting the AF/MF/AEL switch lever to AEL and rotating the front/rear dial while
pressing the AEL button, you can change the shutter speed and aperture (F-value)
combination without changing the set exposure value. (Manual shift)
[42] How to Use Shooting Selecting a shooting mode
BULB
You can shoot a trailing image of the movement of a subject with long exposure.
BULB is suitable for shooting trails of light, such as fireworks.
1. Set the mode dial to M (Manual Exposure).
2. Turn the rear dial clockwise until [BULB] is indicated.
3. Select the aperture value (F value) using the front dial.
4. Press the shutter button halfway down to adjust the focus.
5. Press and hold the shutter button for the duration of the shooting.
As long as the shutter button is pressed, the shutter remains open.
Note
Since the shutter speed becomes slow and the camera-shake tends to occur more easily,
it is recommended that you use a tripod.
The longer the exposure time, the more noise will be visible on the image.
After shooting, noise reduction will be done for the same amount of time that the shutter
was open. However, you cannot shoot any more while noise reduction is in progress.
You cannot set the shutter speed to [BULB] in the following situations:
When the [Smile Shutter] function is activated.
When the [Auto HDR] function is activated.
When [Picture Effect] is set to [HDR Painting] or [Rich-tone Mono.].
When the [Multi Frame NR] function is activated.
When the [Drive Mode] function is set to [Cont. Shooting], [Cont. Bracket], [Spd Priority Cont.] or
[Self-timer(Cont)].