smartfilming

Exploring the possibilities of video production with smartphones

#45 The Smartphone Camera Exposure Paradox — 11. May 2021

#45 The Smartphone Camera Exposure Paradox

Ask anyone about the weaknesses of smartphone cameras and you will surely find that people often point towards a phone’s low-light capabilities as the or at least one of its Achilles heel(s). When you are outside during the day it’s relatively easy to shoot some good-looking footage with your mobile device, even with budget phones. Once it’s darker or you’re indoors, things get more difficult. The reason for this is essentially that the image sensors in smartphones are still pretty small compared to those in DSLMs/DLSRs or professional video/cinema cameras. Bigger sensors can collect more photons (light) and produce better low light images. A so-called “Full Frame” sensor in a DSLM like Sony’s Alpha 7-series has a surface area of 864 mm2, a common 1/2.5” smartphone image sensor has only 25 mm2. So why not just put a huge sensor in a smartphone?

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