What is the size of a seven-inch photo? How many centimeters is it multiplied by?

127 times178mm. 1。 Photographs, also known as photographs, are photos of people or things that are exposed with photosensitive paper under photographic negatives and then developed and fixed. The photo is an image from photography, starting from 1826. The principle of photo-phase formation is to produce still images on radiation-sensitive materials such as photographic plates, paper, glass or metal through the chemical action of light. Most photos are taken by cameras, both positive and negative.

When we say x inches, we mean the long side of the photo. For example, 5 inches means the photo is 2.54x5= 12.7cm 12 inches means 2.54x 12=30.5cm, and 8x 12 means the long side is 2.54x 12 = 30.5cm, and the short side is 2.54cm..

Common photo specifications are in centimeters.

1 inch 2.5*3.5 photo 3.3*2.2 390*260, 2 inch 3.5*5.3, 5 inch 8.9* 12.7, 6 inch1.4 *1. 10 inch 20.3*25.4, 12 inch 30.5*20.3 30.5*22.5 30.5*25.5, 14 inch 35.6*30.5, 15 inch 38./kloc

With the popularity of card digital cameras, digital photos have become a medium for more and more ordinary families to store memories. However, in the process of taking digital photos, the demand for repairing or post-processing digital photos is increasing, and photo processing software is the product of this era. At present, the application of photo processing software mainly lies in the restoration and enhancement of digital photos.

The restoration and enhancement of digital photos refers to the deviation of photos caused by shooting conditions, camera itself or shooting methods. For example, due to the influence of backlight or strong light, there will be a purple edge at the junction of dark and high light, which is usually called "purple edge" in photography. For example, when you shoot with a flash, you accidentally shoot the capillaries of human or animal naked eyes, which leads to red eye in the shot, which is often called "red eye" in photography. If the white object is non-white due to the influence, our naked eyes can judge the original color according to the ambient light, but the digital camera can't judge it, which leads to the inaccurate white balance of the photos taken. The repair and enhancement of photo processing software refers to the handling of these shooting accidents.