What is the pixel size, length and width of a two-inch photo (teach you how to make an electronic two-inch photo)

Two-inch photos with a white background are the most commonly used photo types in our study and life, such as social security card photos, admission photos, and recruitment registration for various exams. At present, there are many tutorials about 2-inch ID photos on the Internet, but the standards are not uniform and the explanations are vague, which has caused troubles to many friends. This paper introduces in detail the standard size of 2-inch ID photos and how to shoot and make standard 2-inch ID photos with smart phones. Any background will do ~

1. What is a 2-inch bareheaded photo with a white background?

First of all, we should fully understand the following concepts and differences, so as to know what we often call "two-inch photos" and why there are various standard two-inch ID photos on the Internet.

1.2 inch quot refers to the diagonal length of paper photos after printing and cutting, and one inch is equal to 3.33 cm.

Because two inches is the diagonal length, the width and height of the photo are not fixed, which is why it is both two inches, but there are several combinations of width and height.

2. Generally, we call it width 35mm height 53mm quot standard 2 inch quot width 35mm height 45mm quot small 2 inch quot.

3. At present, most of the photos are taken with electronic documents, and there is no development, so quot inch quot is not applicable, because on electronic equipment, the two concepts of pixel and resolution are used to represent the size of photos.

The conversion relationship between cm/inch/pixel and resolution is as follows:

1 inch = 2.54cm.

2 inch photo width 35mm=3.5= 1.378 inch.

Suppose the resolution is 300dpi, and the pixel width of a 2-inch photo is 3001.378 = 413.385.

Rounding the decimal places, that is, a 2-inch photo with 300dpi is 4 13 pixels wide and 626 pixels high.

The process is: pixels in millimeters and centimeters.

2-inch photo with normal size and resolution.

According to the above conversion process, when the screen resolution is different, even if they are all standard 2-inch photos, the pixel size of the converted photos is different. For example, if the resolution is increased from 300 to 350, the width and height of the pixel will increase by the same proportion. Seeing this, I believe you will know why so many 2-inch photos on the Internet are caused by the difference in aspect ratio and resolution!

But at present, the most commonly used electronic two-inch ID photos are: resolution 300dpi, pixel width 4 13 and pixel height 626.

If you don't specify the required pixel size when you register for an exam or apply for a certificate, you can make it according to the above size. It is not surprising that Tang has a special figure. It must be caused by different resolution requirements.

In addition, the pixel is the final conversion size of the electronic photo, so we only need to consider whether the pixel value is correct, regardless of the resolution.

Third, the mobile phone shooting method of making two-inch photos online

Know what a 2-inch ID photo is and how to take it with a mobile phone at home. It is more convenient and flexible than a photo studio, and can be photographed repeatedly. Take electronic photos, find an online print shop and send them home. The cost is about 10 yuan.

1. Put on appropriate clothes and non-reflective glasses and take a photo, as shown below. You can choose a clean and bright background, such as the wall facing the window.

Ask friends or family to help you. Shoot with the high-definition camera of the mobile phone. Pay attention to your eyes and keep your shoulders level.

3. After shooting, open the mobile phone WeChat client and find the electronic photo assistant.

4. Select from the menu, and then select Process ID photos.

5. Search in the recommended scheme to find the standard two inches, and choose white according to the ID background. If it is a registration exam, you can also set the KB size of the photo file according to your own needs.

6. Upload photos, drag the clip box with your fingers, and cut out the shoulders and head.

7. Click on the preview, you can see that the photo has become a standard 2-inch ID photo, or you can shoot the preview repeatedly until you are satisfied.

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