A few years back on PN, someone posted a matrix-style chart that showed the relationship between f-stop and shutter speed. It was color coded so that you could find a certain exposure and follow the diagnol line of that color to a different f-stop or shutter speed that would give the same exposur
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Photography 101: Apertures and Shutter Speeds - NANPA
Could the cell phone's cameras be able to have the functions like
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