If you’re in a position to buy either the Vivo X300 Ultra or Oppo Find X9 Ultra along with its respective photography kit ...
I spent a day with the Vivo X300 Ultra to see if its incredible photography kit is worth the money.
Just like with any 2x teleconverter, the focal length of the attached lens is doubled, with a consequent aperture reduction of two f/stops. As such, a 70-200mm f/2.8 zoom effectively becomes roughly a ...
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