Canon EOS Rebel SL1 18-55mm IS STM Kit Instruction Manual - Page 120

a: Manual Exposure In [z2: Auto Lighting Optimizer], if the checkmark for [Disable during man expo] is removed, the Auto Lighting Optimizer can be set in the mode (p.130). When ISO Auto is set, you can press the button to lock the ISO speed. If you press the button and recompose the shot, you can see the exposure level difference on the exposure level indicator (p.24, 25) compared to when the button was pressed. I Using the Built-in Flash To obtain a correct flash exposure, the flash output will be set automatically (autoflash exposure) to match the manually-set aperture. The shutter speed can be set from 1/200 sec. to 30 sec or bulb. BULB: Bulb Exposures A bulb exposure keeps the shutter open for as long as you hold down the shutter button. It can be used to shoot fireworks and other subjects requiring long exposures. In step 3 on the preceding page, turn the dial to the left to set . The elapsed exposure time will be displayed on the LCD monitor. Do not point the camera toward an intense light source, such as the sun on a sunny day or an intense artificial light source. Doing so may damage the image sensor or the camera's internal components. Since bulb exposures produce more noise than usual, the image may look a little grainy. When [z3: Long exp. noise reduction] is set to [Auto] or [Enable], noise generated by the long exposure can be reduced (p.132). For bulb exposures, using a tripod and a remote switch (sold separately, p.310) is recommended. You can also use a remote controller (sold separately, p.309) for bulb shooting. When you press the remote controller's transmit button, the bulb exposure will start immediately or 2 sec. later. Press the button again to stop the bulb exposure. 120