Aps c什麼意思

"APS C" is a term used in photography and refers to a camera sensor size that is smaller than a full-frame sensor but larger than the sensors found in most compact cameras. "APS" stands for "Advanced Photo System," and "C" indicates a sensor size that is smaller than the original APS film format.

The APS film format was introduced in the mid-1990s as a new film standard for still photography. It came in three sizes: APS-C, APS-H, and APS-P. APS-C was the most common size and was approximately equivalent to the size of the negative from a 35mm film camera.

In digital photography, APS-C sensors are commonly used in DSLR (Digital Single-Lens Reflex) cameras, mirrorless cameras, and some bridge cameras. They are known for offering a good balance between image quality and affordability, as they typically cost less than cameras with full-frame sensors but still provide better image quality than cameras with smaller sensors.

APS-C sensors have a crop factor, which means that the lens focal length will appear to be longer than it actually is when used on an APS-C camera compared to a full-frame camera. The crop factor for APS-C sensors is approximately 1.5x (Canon) or 1.6x (Nikon). This means that a 50mm lens on an APS-C camera will have an effective focal length of about 75mm (1.5x crop factor) or 80mm (1.6x crop factor).

Cameras with APS-C sensors are popular among photographers who want better image quality than what is offered by compact cameras but do not want to invest in the more expensive full-frame cameras. They are also commonly used by sports and wildlife photographers who appreciate the reach that the crop factor provides, allowing them to zoom in more closely to their subjects without having to carry around heavy telephoto lenses.