What the heck is variable aperture

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What the heck is variable aperture.


Smartphone manufacturers are forever finding new ways to differentiate and improve the cameras in their handsets, with innovations ranging from powerful new dual-sensor technologies through to superior software processing. This year Samsung looks set to provide another new shooting option for budding photographers with a variable aperture inside its upcoming Galaxy S9 flagship.

According to leaked specifications on the back of a retail box, the Galaxy S9 will supposedly ship with a new 12 megapixel rear camera capable of switching between f/1.5 and f/2.4 apertures. This isn’t the first product to launch with this technology. Samsung’s most recent high-end flip phone, the W2018, has a similar design.

A camera’s aperture refers to the size of the opening through which light enters the camera and reaches the sensor. Aperture is measured in f-stops, a ratio of the focal length divided by the opening size. The smaller the f-stop, the wider the opening — allowing more light to reach the sensor. The Samsung Galaxy S9 will be able to switch between two different sized openings, which has some interesting implications for taking pictures. You can learn more about how aperture affects photography in our in-depth breakdown.



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What the heck is variable aperture