Oppo has announced its new Find X7 Ultra flagship phone, which it says is the world’s first quad main camera with four 50-megapixel cameras on the rear. The China-only release and successor to the Oppo Find X6 Pro is headlined by the advanced 1-inch Sony LYT-900 main sensor and this is the first time its been deployed within a phone. It’s got an f/1.8 aperture with optical images stabilisation, plus a 50% reflection reduction. The optical focal length is
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