What does the long side of the photo mean by 600- 1000 pixels?

The long side of the photo is 600- 1000 pixels, which means the width of the photo is limited to 600- 1000 pixels. That is, the minimum length of the long side is 600 pixels, and the maximum length is 1000 pixels. The short side cannot be longer than the long side.

Pixel is the basic unit of digital image, and the resolution of image is usually expressed by PPI per inch. For example, a resolution of 300x300PPI means that the number of pixels per inch is 300 both horizontally and vertically, or it can mean that there are 90,000 (300x300) pixels per square inch.

Application of digital camera

Pixel is the most important index to measure a digital camera. Depending on the number of photosensitive elements on the photoelectric sensor in the camera, one photosensitive element corresponds to one pixel. Therefore, the larger the pixel, the more photosensitive elements, and the greater the corresponding cost.

The image quality of a digital camera is partly determined by pixels. When they are larger than a certain size, it is meaningless to compare them with pixels. The pixels of mainstream SLR digital cameras are around1000000, but 5 million pixels are enough for ordinary photography and home use.

Because the resolution of the display used is limited, it is generally 1024×768 to 1920× 1200. If a picture with too high pixels is displayed at this resolution, the picture will be compressed to the size of the current screen, and some pictures will be distorted because of too high definition. The imaging quality mainly depends on the size and quality of camera lens and photosensitive element.