November 18, 2024

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Left image: A person wearing a beanie and brown pants stands on a wooden bridge, placing a camera into a black shoulder bag. Right image: A person in a blue jacket with a black backpack stands in a snowy landscape, photographing mountains.

Deal Alert: Save 15% on Select ProMaster Camera Bags and Gloves

ProMaster products are designed and developed in the US by a small team of enthusiastic photographers for fellow creatives, storytellers, artists, and adventurers. Each product is thoughtfully designed to be practical, dependable, and enjoyable to use.

Image of two black camera mode dials. Each dial includes settings like "P," "A," "S," "M," and "AUTO," along with icons for portrait, landscape, macro, and sports modes. The dials are against a light gray background.

How the Defunct APEX System Inspired Aperture and Shutter Priority Modes

Photography is an art and science deeply rooted in the manipulation of light. From the earliest days of the camera obscura to the digital age, photographers have sought to control exposure—the amount of light that reaches the camera sensor or film—to create compelling images. Central to this control are the variables of aperture, shutter speed, and ISO (no, ISO does not actually change the sensitivity but nevertheless plays an integral role in exposure choices).