Folded optics
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Folded optics

OPPO has been teasing a similar concept for a couple of years now but with the P30 Pro Huawei is the first manufacturer to bring folded optics in a smartphone to market. The system allows to squeeze a much longer zoom reach into a thin smartphone body than would be possible with a conventional lens design.

Like with OPPO, the image sensor is placed vertically in the phone and the optical axis of the lens runs across the phone body instead of outwards. A mirror is used to reflect incoming light into the lens and onto the sensor at the right angle. This allows for a 125mm equivalent focal length - more than any other current smartphone and approximately a 5x zoom factor over the primary camera. With the help of clever software this can be expanded to a whopping 50x magnification.