Open Camera or go to Camera > More (depending on your device model), and select Pro mode.

You can then:

• Adjust the metering mode: Touch M and select a metering mode.

  Metering mode	Application Scenarios
  Matrix	Measures the light in the whole frame. Applicable when shooting natural landscapes.
  Center	Concentrates on the light at the center of the screen. Applicable when shooting portraits.
  Spot	Concentrates on the light in a small area of the screen, such as the subject's eyes.

• Adjust the ISO sensitivity: Touch ISO and drag the slider.

  In low-light conditions, increase the ISO sensitivity. In well-lit environments, decrease the ISO sensitivity to avoid image noise.

• Adjust the shutter speed: Touch S and drag the slider.

  The shutter speed affects the amount of light allowed to enter the camera lens. When you are shooting stationary scenes or portraits, decrease the shutter speed. When you are shooting moving scenes or objects, increase the shutter speed.

• Adjust EV exposure compensation: Touch EV· and drag the slider.

  Increase the EV value in low-light conditions and decrease the EV value in well-lit environments.

• Adjust the focus: Touch AF· and select a focus mode.

  Focus Mode	Application Scenarios
  AF-S (single)	Applicable to stationary subjects
  AF-C (continuous)	Applicable to moving subjects
  MF (manual)	Touch the subject on which you want to focus, such as the subject's face.

• Adjust the color cast: Touch WB· and select a mode.

  When shooting in bright daylight, select . When shooting in low-light environments, select .

  Touch to adjust the color temperature.

• Select the storage format: Pro mode allows you to save the photo in JPG or RAW format. Touch in the viewfinder to select different storage formats.

  Images in RAW format retain more details for post-processing but take up a relatively large storage space, whereas images in JPG format require less storage space. Choose between the two as required.

  If you select RAW format, photos that you take will be saved in DNG and standard formats. The DNG format photos will be saved to the RAW photo album in Gallery.

• Enable AF assist light: For better focus in low-light environments, touch to enable AF assist light.

Touch the shutter button to take a photo.

In Pro mode, touch to switch to Video mode. You can then:

• Adjust the metering mode: Touch M and select a metering mode.

  Metering Mode	Description
  Matrix	Measures the light in the whole frame. Applicable when shooting natural landscapes.
  Center	Concentrates on the light at the center of the screen. Applicable when shooting portraits.
  Spot	Concentrates on the light in a small area of the screen, such as the subject's eyes.

• Adjust the ISO sensitivity: Touch ISO and drag the slider.

  In low-light conditions, increase the ISO sensitivity. In well-lit environments, decrease the ISO sensitivity to avoid image noise.

• Adjust the shutter speed: Touch S and drag the slider.

  The shutter speed affects the amount of light allowed to enter the camera lens. When you are shooting stationary scenes or portraits, decrease the shutter speed. When you are shooting moving scenes or objects, increase the shutter speed.

• Adjust EV exposure compensation: Touch EV· and drag the slider.

  Increase the EV value in low-light conditions and decrease the EV value in well-lit environments.

• Adjust the focus: Touch AF· and select a focus mode.

  Focus Mode	Description
  AF-S (single)	Applicable to stationary subjects
  AF-C (continuous)	Applicable to moving subjects
  MF (manual)	Touch the subject on which you want to focus, such as the subject's face.

• Adjust the color cast: Touch WB· and select a mode.

  When shooting in bright sunlight, select . In dimly-lit environments, select .

  Touch to adjust the color temperature.

Touch to start recording.