The corresponding cm is:15.2cm *10.2cm.
The size of the photo is in inches, 1 inch =2.54cm, and usually x inches refers to the inch length of the long side of the photo. For example, 5 inches means that the photo length is 2.54x5 =12.7cm; 12 inch means that the length of the photo is 2.54x12 = 30.5cm. ..
ID card, physical examination form, etc. Most of them are 22×32mm small, 26mm×32mm second-generation ID cards, and 25mm×35mm ordinary one-inch photos. The standard photo size of passports and travel documents is 48mm×33mm, the head width is 2 1 mm ~ 24 mm, and the head length is 28 mm ~ 33 mm).
Extended data:
The rest of the photos are as follows:
1 inch 1 inch * 1.5 inch 2.5cm*3.5cm?
2 inch 1.5 inch *2 inch 3.5cm*4.9cm
5 inches 3.5 inches *3.5 inches 12.7cm * 8.9cm.
7 inches /5R 7 inches *5 inches 17.8cm* 12.7cm?
8 inch 6 inch *8 inch15.2cm * 20.3cm.
Small 12 inch 8 inch * 12 inch 20.3cm*30.5cm?
12 inch 10 inch * 12 inch 25.4cm*30.5cm
The maximum resolution that human eyes can distinguish is 300dpi. Beyond this resolution, the human eye can't see the difference, that is to say, there is no difference between 300dpi and 600dpi, so the maximum design output resolution of printing equipment at present is 300dpi.
Of course, everyone has different requirements for clarity. Generally speaking, 200dpi can satisfy most people, so printing a 2-megapixel 6-inch photo is still very clear to most people.
"Print size" has a great relationship with image resolution. As long as the image resolution changes, the print size will change accordingly, and pixels are directly related to the image resolution, so the three can be converted to each other. And the most fundamental one is the pixel.
Resolution: 200dpi photo size and pixel size.
700× 1000= about 800,000 pixels =5 inch photo (3.5×5 inch, millimeter size 89×127);
800× 1200= about1million pixels =6 inch photo (4×6 inch, millimeter size102×152);
1000× 1400= about10.5 megapixel =7 inch photo (5×7 inch, millimeter size,127×178);
1200× 1600= about 2 million pixels =8 inch photo (6×8 inch, millimeter size152× 203);
1600×2000= about 365438+ megapixels = 10 inch photo (8× 10 inch, millimeter size 203× 258);
1600×2400= about 4 million pixels = standard photo (8× 12 inch, millimeter size 203× 304);
1600×2800= about 4 million pixels = wide photo (8× 14 inch, millimeter size 203×356).
References:
Baidu encyclopedia-photo size