Size proportion of certificate photo

What is the size ratio of common photos? For example, I heard that 6 inches is 3:2 and 8 inches is 4:3? Excuse me, how come?

1 inch 2.5*3.5cm 4 13*295 ID photo 3.3*2.2 390*260 2 inch 3.5*5.3cm 626*4 13 2 inch smaller (passport) 4.8*3.3cm 567*390 5 inch 5x. 8.9cm 1200x840 and above10.000000 pixels 6 inches 6x415.2 *10.2cm1440x960 and above13000000 pixels 7 inches 7x5/kloc-0.

What is the proportion of photos of various sizes?

1 inch 2.5*3.5cm 4 13*295

Certificate photo 3.3*2.2 390*260

2 inch 3.5*5.3cm 626*4 13

2 inches smaller (passport) 4.8*3.3cm 567*390

5-inch 5x3.512.7 * 8.91200x840/kloc-0.0 million pixels.

6 inch 6x415.2 *10.21440x96010.3 million pixels.

7-inch 7x517.8 *12.71680x12002 million pixels or more.

8 inch 8x620.3 *15.21920x1440 3 million pixels or more.

12 inch12x10 30.5 * 20.3 2500x2000+5 million pixels

10 inch10x8 25.4 * 20.3 2400x19204 million pixels or more.

15 inch15x10 38.1* 25.4 3000x2000 6 million pixels.

In addition, digital film, regardless of the number of pixels, only looks at the number of pixels on the long side, 5 inches 1200.

1400 is 6 inches, and 1700 is 7 inches.

In fact, the calculation method is also very simple:

2 megapixel digital camera, effective pixel 1.92 million, maximum output 1.600 * 1.200 photos.

Width: 1600 pixels /300 dpi=5.3 inches

Height: 1200 pixels /300 dpi=4 inches

That is to say, if you print with 300dpi output resolution, you can print a photo of 5.3*4 inches at most. The usual photo size is:

5 inches: 5*3.5 inches

6 inches: 6*4

Obviously, 2 million pixels can print 5-inch photos at 300dpi.

(Note: 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 2 million pixels are used for printing. )

Summary: As mentioned above, "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.

/kloc-The standard size of 0/inch to 30-inch photos is required to be accurate.

Photos with standard size of 1 inch to 30 inches:

1 inch: 2.5 * 3.5cm.

2 inches smaller: 3.3 * 4.8 cm

2 inches: 3.5 * 5.3 cm

5 inches: 8.9 * 12.7 cm.

6 inches: 10.2 * 15.2cm.

7 inches:12.7 *17.8cm.

8 inches:15.2 * 20.3cm.

10 inch: 20.3 * 25.4 cm

12 inch: 30.5 * 20.3cm 30.5 * 25.4cm

14 inch: 35.7 * 25.4cm.

15 inch: 38. 1 * 25.4 cm.

16 inch: 40.6 * 30.5cm.

18 inch: 30.5 * 45.7 cm

20 inches: 40.5 * 50.8cm.

24 inches: 50*60cm

30 inches: 60*75cm

Extended data:

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 1mm~24mm and the head length is 28mm~33mm).

References:

Sogou encyclopedia-photo size

Sogou encyclopedia-photos

What is the size of an inch photo?

One-inch photos refer to photos with the size of 1 inch (25mm*35mm) and without a hat. Generally speaking, it is usually used to make official documents, such as ID cards, work permits, student ID cards or forms in files. Because wearing a hat may affect your real appearance, you are required to be bareheaded.

Extended data:

One-inch photo standard requirements

1, and the resident ID card must be made in the form of digital photos;

2. The photo specification is 358 pixels (width) *44 1 pixel (height), and the resolution is 350dpi.

3. The citizen's recent color photo image, with a pure white background and no standard clothes or white tops. Residents who often wear glasses should wear glasses, requiring clear images, rich levels, natural expressions and no obvious distortion;

4. The Ministry of Public Security has formulated and issued the Technical Standard for Making Digital Photos with Identity Cards. All photos must be recent bareheaded color headshots, accounting for 2/3 of the photo size, with clear images, rich layers, natural expressions and no obvious distortion, and the photo size is 32 mm * 26 mm

References:

Baidu Encyclopedia-One inch bareheaded photo

What is the standard size of an inch photo?

One-inch photos: for example, passports, visa applications and degree certificates are usually one inch larger, 48 mm *33 mm

ID card, physical examination form, etc. Usually one inch smaller than 32 mm *22 mm, the second generation ID card (26 mm * 32 mm).

Ordinary one-inch phase is 25mm*35mm.

The standard photo size of passports and travel documents is 48mm*33mm, the head width is 2 1mm~24mm, and the head length is 28 mm ~ 33 mm ..

1* 1.5 inch: one inch 2.5 * 3.5 (cm); One inch small 2.2*3.2 (cm); One inch larger, 3.3*4.8 cm

1.5*2 inches: 2 inches 3.5 * 4.9 (cm); 2 inches 3.5 * 4.5 (cm); Sophomore inch 3.5*5.3 (cm)

Extended data:

measure

2.5X3.5cm cm

Other special photos:

First generation ID photo: (black and white photo): 2.2cm x 3.2cm

Second-generation ID photo: 2.6cm x 3.2cm

One inch smaller in black and white: 2.2cm x 3.2cm

Black and white size increased by one inch: 3.3cm x 4.8cm

One inch smaller in color and blue background: 2.7cm x 3.8cm

Small one-inch colored white background: 2.7cm x 3.8cm

One inch smaller red background color: 2.7cm x 3.8cm

One inch larger in color, red background: 4.0cm x 5.5cm

Baidu encyclopedia: one-inch photos

What size photos usually have?

The size of photos is usually in inches, 1 inch ≈2.54 cm. An x-inch photo means that the long side of the photo is x-inch. For example, the length of a 5-inch photo is 2.54x5 =12.7cm; The length of 12 inch photo is 2.54x12 = 30.5cm. ..

Common photo sizes:

1 and 1 inch photos are 2.5cm*3.5cm in size, which are often used for ID photos.

2.2-inch photos are 3.5cm*5.3cm in size, and are often used for standard 2-inch photos.

3. 1 inch photo size is 3.3cm*4.8cm, which is often used for China passports/visas.

4.5 inch /3R photo size is 12.7cm*8.9cm, which is the most common photo size.

The photo size of 5.6 inch /4R is 15.2cm* 10.2cm, which is a common photo size in the world.

6.7 inch /5R photo size is17.8cm *12.7cm. ..

The size of 7-and 8-inch photos is 15.2cm*20.3cm, which is about half of A4 printing paper.

8. The size of the small 12 inch photo is 20.3cm*30.5cm, which is about A4 size.

9. The photo size of12 inch is 25.4cm*30.5cm.

Extended data:

Usually, the specifications of photos are expressed in inches, which is different from the diagonal length of products such as monitors. "A few inches" in the photo refers to the length of inches on the long side of the photo. For example, a 6-inch photo means a 6*4-inch photo.

There is also a commonly used method to indicate the size of a photo in the world, which is to take the integer value of the short side of the photo and add the letter R to indicate it. For example, a 6-inch photo is 6*4 inches, which is 4R.

Generally, the ratio of photos taken by digital cameras is 4:3 (consistent with the ratio of our monitor), while the ratio of enlarged photos is generally about 3:2 (consistent with the length and width ratio of film negatives).

Therefore, when printing photos of digital cameras, the proportion of photos should be cut to about 3:2, so that the printed photos just fill the whole photo paper. If you don't want to cut the photo, or the content is too full to cut, you have to leave a little white margin on the left and right when you enlarge the print.

Sogou encyclopedia-photo size

Comparison of common photo sizes

First, the common one-inch photo size print size: 2.5cm x 3.5cm；; Electronic photo size: 295 pixels * 4 13 pixels (resolution 300dpi) Two-inch photo size Print size: 3.5cm x 5.3cm；; Electronic photo size: 4 13 pixels * 625 pixels (resolution 300dpi) One inch smaller photo size Print size: 2.2cm x 3.2cm；; Electronic photo size: 259 pixels * 377 pixels (resolution 300dpi) One-inch large photo size Print size: 3.3cm x 4.8cm；; Electronic photo size: 389 pixels * 566 pixels (resolution 300dpi) Small two-inch photo size Print size: 3.5cm x 4.5cm；; Electronic photo size: 4 13 pixels *53 1 pixel (resolution 300dpi) II. Special ID photo Hong Kong and Macao Pass: 3.3 cm *4.8 cm US Visa: 5 cm * 5 cm Japan Visa: 4.5 cm *4.5 cm Thailand Visa: 3.5 cm *4.5 cm landing visa, Viet Nam Passport: 4 cm *6 cm.

Photos must meet the following basic requirements, otherwise the application will not be accepted. 1. The photos must be taken within the last 6 months. 2. The photo size is 2x2 inches (5x5cm). 3. The vertical dimension of the applicant's head must be between 1 inch and 1 3/8 inch (2.5-3.5cm). 4. The photo must be on a white background.

You must face the camera and show your ears. The photo of each passport or visa applicant must be a recent (recent 6 months) bareheaded photo.

A "frontal" photo means that the applicant has to face the camera when taking a photo. Applicants should not bow their heads or squint, and their faces should account for 50% of the whole photo.

The size of the photo is 2x2 inches (a square with a side length of about 50 mm), and the head is in the center. The head (from the top of the head to the chin) is between 1 inch and 1 3/8 inch (that is, 25mm to 35mm), and the distance from the eyes to the bottom of the photo is between 1 to18 inch and 1 3/8 inch (that is, 28mm to 35mm)