Aps c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 Four Thirds sensor. APS-C stands for "Advanced Photo System type-C," and it is a sensor size that is widely used in digital SLR cameras and mirrorless cameras.

The APS-C sensor size is approximately 25mm x 17mm, which is about half the size of a full-frame sensor, which is typically around 36mm x 24mm. The smaller sensor size makes APS-C cameras lighter and more compact, which is one of the reasons why they are popular among amateur and professional photographers.

When you use a lens with an APS-C camera, the lens projects an image onto a smaller sensor, which means that the lens effectively has a longer focal length and a narrower field of view than it would with a full-frame camera. This is because the sensor captures only the central portion of the image circle that the lens projects.

Many photographers choose APS-C cameras because they offer a range of benefits, including:

  1. Cost: APS-C cameras are generally less expensive than full-frame cameras, which makes them a more affordable option for many photographers.

  2. Lens Reach: The crop factor of an APS-C sensor (usually around 1.5x or 1.6x) means that lenses have a longer effective focal length, which can be advantageous for sports, wildlife, and other types of photography where you need to zoom in to capture distant subjects.

  3. Lightweight and Compact: APS-C cameras are often smaller and lighter than full-frame cameras, which makes them easier to carry around and more convenient for travel photography.

  4. High-Quality Images: Despite the smaller sensor size, APS-C cameras can still produce high-quality images with excellent detail and low-light performance, especially when paired with high-quality lenses.

APS-C cameras are available from a variety of manufacturers, including Canon, Nikon, Sony, Fujifilm, and Pentax, among others. Each manufacturer may have its own name for the APS-C sensor format, such as "DX" for Nikon, "APS-C" for Canon, "APS-C" for Sony, "X-Trans CMOS" for Fujifilm, and "Q" for Pentax.