Oppo's 10x optical zoom technology is coming to a phone in Q2 2019 | Mashable
Hands-On With Samsung's Galaxy S4 Zoom, The Smartphone With A 10x Optical Zoom Lens | TechCrunch
50x optical zoom on your smartphone camera with Swarovski Optik
Samsung Galaxy S21 and S21 Ultra Review: Pro Zoom | WIRED
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Iterating on zoom: smartphone approaches through the years...
Samsung Introduces GALAXY S4 zoom – the first smartphone to offer 10x optical zoom, for perfect picture taking – Samsung Global Newsroom
OPPO announces dual-cam 5x optical zoom technology for smartphones: Digital Photography Review
Continuous zoom to make a come back in smartphone cameras?
The 100x zoom fairy tale: smartphone focal lengths and optical zoom explained | NextPit
Which phone camera has the best optical zoom? - Quora
Optical zoom vs digital zoom: understand your camera phone's close-up potential | TechRadar
Sony's Xperia 1 IV smartphone features 'the world's first true optical zoom lens' | Engadget
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Huawei P40 Pro Plus' 10x optical zoom camera puts iPhone and Samsung to shame - CNET
Huawei: Smartphone cameras with optical zoom coming within a year | Trusted Reviews
Optical zoom & smartphones - the next big thing?
Galaxy K Zoom review: Samsung's best cameraphone yet | Engadget
Xiaomi Mi Mix 5 Ultra Has Crazy 200X Optical Zoom, Retractable Lens - Concept Phones
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