Huawei NOVA Y91 User Manual page 54

The figures are for reference only.
1
Open Camera and select Pro mode.
2
From there, you can:
Adjust the metring mode: Touch M and select a metring mode.
•
Metring mode Overview
Matrix
Centre
Spot
Adjust the ISO sensitivity: Touch ISO and drag the slider.
•
Measures light across the entire frame; ideal for shooting natural
landscapes.
Focuses on light near the centre of the screen; ideal for shooting
portraits.
Focuses on light from a specific region, such as a subject's eyes.
Camera and Gallery
51