Photo specification

Common sense: Usually, the specification of a photo will be expressed by "inch", 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. 1. Home Digital Printing Reference.

In order to save memory card space, most digital cameras will provide a variety of photo quality for users to choose from. Mainly divided into the best (best quality), good (good quality) and average (average quality).

The difference is that the JPEG photos after shooting have different degrees of compression. However, excessive compression will seriously affect the quality of photo printing.

Therefore, the photos taken by the latter two may not be really suitable for printing. Before taking a photo to be developed, the user had better check whether the quality of the developed photo is directly proportional to the taken image file.

In order to ensure a satisfactory printing effect, you can refer to the following table. Print size (inch) File size (approximate) requires minimum resolution photo size (1 inch /2 inch)150-200kb640x480 (300,000) 2.5 * 3.5cm/5.3 * 3.5cm (5 * 3.5cm). 3r500-550kb1280x960 (1.2000)12.70 * 8.89cm (6*4 inches) 4r600-650kb1280x100. 6 cm (7*5 inches) 5r800-5r8006r1-1.2 MB1900x1280 (2.4 million) 20.32 *15.24cm (/.

If users want to print digital photos frequently, it is best to check whether the photos meet the above requirements first. My personal suggestion is to choose "the best quality" when shooting, so as to reduce the loss of photo details and ensure good printing effect.

In addition, users can also calculate the correct digital photo output size according to the following formula. Shooting resolution ÷300dpi= output size. For example, if the photographed picture is 1.5 million pixels (1024x 1536), divide 1024 and 1536 by 300 to get 3.5 inches by 5 inches (that is, 3R size).

That is to say, the maximum printing limit of digital photos with 6.5438+0.5 million pixels is 3R, and so on. Reference: family 4R photo recommended pixel: 654.38+0.20 million pixels, which can print a more understandable 23 million pixel photo. This is a good choice, that is, the pixels are guaranteed and the file is not very large (recommended). 4. Larger pixels have little effect on the printing quality (if the file is too large, the photo development hall will help you cut it), but the file size will be very large. If the camera memory card is enough and the hard disk of the computer at home is very large, use the highest pixel that the camera can shoot. Secondly, due to the size limitation of CCD photosensitive device, the aspect ratio of photos is 4:3, while the general 3R photo ratio is 5:3.5 and 4R photo ratio is 3:2.

If developed in proportion, the photos will have white edges or some images will be cut out. Some people say that I can cut the aspect ratio of photos in advance in the computer, but I don't recommend it because it takes a lot of time.

The expedient measure is to reserve 5 to 8 spaces at the edge of the image when shooting, which can avoid the above problems. Of course, if you think you are more accurate in cutting photos, the cutting tool built in Photoshop, a well-known graphic editing software, can help you.

Just enter an appropriate scale in the tool options, such as 3.5 inches by 5 inches, and the cropping tool will crop the photos according to the scale provided by the user. As far as I know, many photo processing libraries respond to the trend of digital cameras and can print 4:3 photos, that is, there is no need to cut them, so the 6-inch photos are actually 6×4.5 inches (15.2 ×11.4cm). Compared with 4R photos, uncut 4:3 photos are called 4D sizes, and corresponding photo albums are available for distribution/sale. Before the development, you can know the actual size and price of the local photo library in detail. Here you can refer to the price of local Baijia printing: 4D is 10 cents more expensive than 4R, 4D smooth surface is 80 cents, polished surface is 90 cents, 4D smooth surface+crescent moon = 1 yuan/sheet, and the prices vary from place to place.

Third, use software to decorate photos. Before sending photos to a print shop or directly printing with a printer, it is helpful to improve the appreciation of photos by adjusting the brightness, contrast, contrast and vividness of photos with software. The author has a little trick, that is, using "color scale" (Ctrl+L) in Photoshop to trim the two corners to the two ends of the histogram, and the brightness, contrast and overall tone of the photo will be obviously improved.

In addition, you can choose "Auto Levels" or "Auto Colors" function, which is also helpful for image quality and tone adjustment. Fourth, clearly explain to the print shop that under normal circumstances, the digital laser print shop will use the computer to automatically adjust the brightness and four colors of CMYK photos.

Users can know whether the printing shop has corrected the color of the photo from the code on the back of the developed photo. If the word "NNNN" appears, it means that the printer does not think it is necessary to adjust. But generally speaking, proper color correction helps to provide the appreciation of photos.

Verb (abbreviation of verb) table 1 attachment: comparison table of maximum size and printable photos of digital cameras provided by users of famous photographic art websites Shadow of Color and Bloody Dusk. A digital camera can print a data comparison table with the maximum photo size calculated by 150PPI (inch), with 5 million pixels, 49 15200 pixels and 2560X 1920 pixels. The developable photo size is 17X 13, diagonal 2 1 inch, 4 million pixels effective 387 1488, and pixels 2272X 1704.

The developable photo size is 15X 1 1, diagonal 19 inches, 3 million pixels effective 3 145728, and pixels 2048X 1536. Developable photo size 14X 10, diagonal 17 inch 2 million pixels effective 1920000, pixel 1600X 1200.

The size of the developable photo is 1 1X8, diagonal 13 inch10.3 megapixel effective 1228800, pixel 1280X960. The size of the developable photo is 9X6, the diagonal line 1 1 inch is 0.8 million pixels, and the pixel is 1024X768.

The developable photo has a size of 7X5 and a diagonal of 9 inches, with 5,000 effective pixels, 480,000 effective pixels and 800X600 pixels. You can rush.

How long and wide should a small photo of 1 inch be converted into centimeters?

1 inch: 25*38 mm 1 inch =2.54cm, the general photo size is: 1 inch, the photo size should be 3.6cm * 2.7cm2, the photo size should be 3.5cm * 4.5cm3, and the size of a 3-inch photo should be 7.6 cm *5.3 cm 5 (the most common photo size). The photo size should be12.7cm * 8.9cm.. 6 inch (international photo size) photo size is15.2cm *10.2cm; The size of the 7-inch (enlarged) photo is17.8cm *12.7cm; 12 inch photo size is 30.5cm * 25.4cm, one inch smaller in black and white (22mm*32mm), one inch smaller in color (27mm*38mm) and one inch larger in color (40mm*55mm, 3.5*4.5).

What are the specific sizes of all the photos?

Specific description

Standard size of digital photos

Photo specifications of common certificates:

1. ID card (22mm * 32mm)

2. Driver's license (22mm*32mm)

3. Black and white is one inch smaller (22mm*32mm)

4. The color is one inch smaller (27mm*38mm)

5. The color is one inch larger (40mm*55mm)

6. Ordinary ID photo (33mm*48mm)

The size of an inch photo is 2.5 x 3.6 cm 5x8 inches.

The size of the two-inch photo is 3.4 x 5.2 cm 5x9 inch.

The size of the three-inch photo is 5.5 x 8.4 cm 5x 10 inch.

The size of the five-inch photo is 3.5 x 5cm 5x 12 inch.

The size of a six-inch photo is 15.2x 10.2cm 6x9 inch.

The size of a seven-inch photo is17.8x12.7cm6x10 inch.

The size of an eight-inch photo is 6 x 8 6x 12 inch.

The size of a ten-inch photo is 8 x 10 6x 14 inch.

The size of 12 inch photo is 30.5 x 25.4cm 8.5x 12 inch.

14 inch photo size is10x14x10x14.5 inch.

16 inch photo size is12x1612x17 inch.

18 inch photo size is12x1812x17.5 inch.

Comparison Table of Maximum Size of Digital Camera and Printable Photo:

Photo size (inches) (centimeters) (pixels)

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 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.

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

12 inch12x10 30.5 * 20.3 2500x2000+5 million pixels

15 inch15x10 38.1* 25.4 3000x2000 6 million pixels.

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How many centimeters, length and width is an inch photo?

Photo specifications inch centimeter pixel digital camera model 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 small 2 inch (passport) 4.8 * 3.3cm567.

How is the size of the photo calculated?

The photo size is in inches, that is, 1 inch =2.54cm 9*6.

22.54cm *15 ′ 24cm, measure by yourself. If the film is developed, it won't have this size. Please only ask the master to zoom in to 10 inch before cutting.

Photo size

Photo size

1X 1.5 (1 inch) 2.6*3.9 one inch 2.5*3.5.

1.5X2 (2 inches) 3.8*5. 1 big 2 inches 3.5*5.0 small 2 3.5*4.5

5*3.5(5 inches /3R) 12.70*8.89

6*4(6 inches/4r)15.24 *10.16

7*5(7 inches /5R) 17.78* 12.70

8*6(8 inches /6R) 20.32* 15.24

10*8( 10 inch /8R) 25.40*20.32

10* 12( 12 inch) 25.40*30.48

12* 14( 14 inch) 30.48*35.56

12* 16( 16 inch) 30.48*40.64

14* 18( 18 inch) 35.56*45.72

16*20(20 inches) 40.64*50.80

20*24(24 inches) 50.80*60.96

24*30(30 inches) 60.96*76.20

24*36(36 inches) 60.96*9 1.44

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

What are the photo sizes of 1- 15 inch?

Please refer to the following for photo size (inches) and print size (centimeters):

1, one inch: 1X 1.5 (1 inch) 2.5*3.5cm

2. Two inches 1.5X2 (2 inches)-3.5 * 5.3cm.

3, 2 inches smaller (passport) 4.8*3.3cm 567*390

4. Five inches: 5*3.5(5 inches/3r)-12.70 * 8.89cm.

5. Six inches: 6*4(6 inches/4r)-15.24 *10.16cm

6. Seven inches: 7*5(7 inches/5r)-17.78 *12.70cm.

7. Eight inches: 8*6(8 inches/6r)-20.32 *15.24cm.

8. Ten inches: 10*8( 10 inch /8r)-25.40 * 20.32cm.

9. Twelve inches: 10* 12( 12 inches) -25.40 * 30.48cm.

10, fourteen inches: 12* 14( 14 inch)-30.48 * 35.56cm.

Photo sizes are generally not three inches, nine inches or fifteen inches.

If you want to change the photo size, you can use PS software to modify the photo to the specified size. The operation steps are as follows (taking one-inch photos as an example):

1, open the picture with Photoshop, and press Ctrl+A to select all.

2. Click Image-Image Size, set the width to 2.5cm and the height to 3.5cm, and then click OK.

3. Check the effect. The finished work is a standard one-inch photo.

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:

Photo Size-Baidu Encyclopedia

What is the size of the photo?

Can you read it?

Inch cm

0 1 inch01*1.5 2.6 * 3.8

02 inches 3 * 4

02 inch 3.5 * 4.5

02 inch 1.5* 2 3.8 * 5.3

03 inch 2 * 3 5. 1 * 7.6

05 inch 3.5* 5 8.9 * 12.7

06 inch 4 * 6 10.2* 15.2

07 inch 5 * 7 12.7* 17.8

08 inch 6 * 8 15.2*20.3

10 inch 8 * 10 20.3*25.4

12 inch 10 * 12 25.4*30.5

14 inch10 *14 25.4 * 35.6 26 * 37

14 inch 12 * 14 30.5*35.6

15 inch 10 * 15 25.4*

16 inch 12 * 16 30.5*40.6

18 inch 12 * 18 30.5*45.7

18 inch 14 * 18 35 * 45

20 inches 16 *20 40 * 50

24 inches 18 *24 45.7* 60

24 inch 2 0 *24 50 * 60

30 inch 24 *30 60 * 76

32 inch 24 *32 60 * 80

36 inch 24 *36 60 * 90

40 inch 36 *40 76 * 10 1

60 inch 40 * 60101.6 *152.4

The first column is the photo specification, and the second column is the inch width and inch length corresponding to the specification.

The third column is the cm width and length corresponding to 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.

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

12 inch12x10 30.5 * 20.3 2500x2000+5 million pixels

15 inch 1 5x10 38.1* 25.4 3000x20006 million pixels1. Id card (22 mm * 32 mm)

2. Driver's license (22mm*32mm)

3. Black and white is one inch smaller (22mm*32mm)

4. The color is one inch smaller (27mm*38mm)

5. The color is one inch larger (40mm*55mm)

6. Ordinary ID photo (33mm*48mm)