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dual lens: do I have this right?

Started Aug 17, 2019 | Discussions thread
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gychang49
gychang49 Regular Member • Posts: 447
dual lens: do I have this right?

I have Xiaomi Redmi Note 5 dual lens smartphone:  https://www.gsmarena.com/xiaomi_redmi_note_5_ai_dc-review-1777p5.php

It has 2 rear-facing lens, 12MP (main) and 5MP lenses.  I am guessing under 2x zoom, it uses the main lens, and within this range 1-2x, it uses digital cropping?  Beyond 2x zoom, the other 5MP lens takes over?

Sharpness definitely deteriorates higher zoom, since there is no true optical zoom..., is this all correct?

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it is not the camera... but my brain is not too sharp.

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