How to use PS to make a one-inch ID photo: First use PhotoShop to open the photo to be made; then set the width of the photo to 2.5cm and the height to 3.5cm; finally adjust the contrast, color and tone, and modify the background of the photo Just wait.

How to use PS to make a one-inch ID photo

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This tutorial describes in detail how to use PhotoShop images Processing software to create one-inch, two-inch or six-inch photos. I hope you won’t have to worry about urgently needing one-inch photos in the future. You can take photos yourself and use PhotoShop to make a layout of the 1-inch photos, and then take them directly to a developing shop for printing or development.

The size of the photo

First you need to know the size of the 1-inch, 2-inch and 6-inch photos, as follows:

6 inch = 10.2cm X15.2cm = 6X4inch

2 inch= 3.5cm X5.3cm = 2/1.5inch

1 inch= 2.5cm The relationship is 1 inch = 2.54 centimeters.

Note: Another simple calculation method when developing digitally is to calculate what resolution is suitable for processing and how big a photo is. The resolution is 1600 The suitable photo size for printing is 6 inches.

Little common sense: "inch" is usually used to indicate the size of a photo. The "inches" mentioned on the photo refer to the length of one side of the photo. For example: a 6-inch photo refers to a 6X4-inch photo. There is also an internationally accepted method of expressing the size of a photo, which is to express it by taking the inch integer on the short side of the photo and adding the subtitle R. For example, for a 6-inch photo, the rule is 6X4 inches, or 4R.

Production method

1) Use PhotoShop to open the photo you want to create;

2) Click the rectangular marquee tool on the toolbar and select "Fixed Proportion" in the style "Set the width and height according to the size of the photo you need to create. For a 1-inch photo, set the width to 1 and the height to 1.5. Select a suitable position on the photo and click "Image" - "Crop" to crop the photo.

3) Click "Image" - "Image Size", set the document size, remove the "Constraint Proportion" selection, set the width to 2.5cm, the height to 3.5cm, the resolution to 300 pixels/inch, click OK button.

4) Now you can make appropriate adjustments and modifications to the current picture, such as adjusting contrast, color and tone, modifying the photo background, etc.

5) Click "Image" - "Canvas Size", in the pop-up dialog box, select the "Relative" selection box, set the width to 0.4cm, the height to 0.4cm, the positioning to the middle, and the canvas to expand As the background color (white), click the "OK" button.

6) Click "Edit" - "Define Image" to define the modified photo as a pattern, use the default name or modify the name, and click the "OK" button.

7) Click "File" - "New" to create a new canvas, set the width to 11.6cm, the height to 7.8cm, and the resolution to 300 pixels/inch, so that you can place two rows of 4 pictures each photos (8 photos in total), click "OK".

8) Click "Edit" - "Fill...", select the custom pattern as the pattern defined in step 6, and click the "Confirm" button.

9) Click "File" - "Storage" to save the created photos to your local hard drive.

10) Copy the photos you just saved to the USB flash drive, and then you can go to the developing shop to develop the photos. Of course, you can also ask the owner of the developing shop to touch up the photos for you before printing or developing them.

Red and blue are commonly used as background colors for color ID photos. Development shops generally use the default RGB mode. Only the photo printing industry uses CMYK mode. There are no strict uniform requirements for the background color of ID photos. The blue background color value is set to: R=60, G=140, B=220 or C=85, M=40, Y=0, K=0.

The red background color value is set to: R=255, G=0, B=0 or C=0, M=100, Y=100, K=0.

The background color value (blue) of the entry-exit/passport photo of the People's Republic of China is: R=67, G=142, B=219.

The background color values (pure white) of second-generation ID cards and social security cards are: R=255, G=255, B=255.

Change the background color of photos

1) Open PhotoShopCS5 software, click "File" - "Open" to select the photo that needs to change the background.

2) Right-click the background layer, select "Copy Layer" in the pop-up menu, and click "Confirm" directly.

3) Click to select the "Background Copy" generated by copying, select the menu "Image" - "Adjustment" - "Replace Color". In the pop-up window, move the mouse to the original image and the mouse will become In the shape of a dropper, click on the color area that needs to be replaced. At this time, the white area represents the area to be replaced.

4) Select the color that needs to be replaced, left-click the color selection box in the "Replace" area below the "Replace Color" window, select the background color you want in the pop-up "Select Target Color" window, and click "confirm".

Note: If the color does not change to the desired color, please modify the brightness setting, saturation setting and hue in the "Replace" area to set them to the maximum value.

5) If you find that there are a lot of burrs at the edges of the hair, you can solve it by increasing the "Color Tolerance" and adjust it to the maximum value of 200, which will remove the burrs at the edges of the hair.

6) If the face area also changes color, you can perform subsequent processing and click the "Add Layer Mask" button below the layer panel. Left-click the "Layer Mask Thumbnail", click the "Foreground Color" color box to set the foreground color, and make sure the foreground color is black.

7) Click to select the brush tool, adjust the size of the brush appropriately, and then apply it back and forth in the photo. At this time, the place where the brush passes will return to its original state.

8) Finally, you can adjust the brightness and contrast of the picture appropriately. Click the "Create a new fill or adjustment layer" button below the layer panel, and select "Brightness/Contrast" at the end of the pop-up menu. options. In the pop-up "Adjustment" window, appropriately increasing the brightness and contrast will make the photo look clearer.

9) Finally, click "File" - "Save as..." to save the modified photo.

Photo quality and file size reference chart

##5/3.5(3R)500~550KB6/4（4R）7/5(5R)##1900X1280 (2.4 million) 20.32/15.24cm1.3~1.5MB2048X1536 (3 million)25.40/20.32cm

Printing size	File size (approx.)	Minimum resolution	Corresponding size
1 inch	150~200KB	##640X480（300,000）	2.5/3.5cm
2 inches	150~200KB	640X480 (300,000)	3.5/5.3cm
	##128X960 (1.2 million)	12.70/8.89cm
600~650KB	##1280X1024 (1.3 million)	15.24/10.16cm
800~900KB	1600X1200 (2 million)	17.78/12.70cm	##8 /6(6R)
1~1.2 MB			10/8(8R-8F)
			##Table: Printing Photo maximum size comparison table

Pixel size

Effective pixels49152001600X1200##1380X9607X5 inch9 inch##5X4 inch4X3 inches

It can be seen from the above table: 800X600 is used for 5-inch (35) photos, 1024X768 is used for 6- and 7-inch photos, and 1280X960 is used for 8-inch photos.

Table: Table of various document sizes

Pixel size	Flushable size	Diagonal length		5million
##2560X1920	17X13 inches	21 inch	##4 million	3871488
2272X1704	15X11 inch	19 inch	3 million	3145728
2048X1536	14X10 inches	17 inches	##2 million	1920000
##11X8 inches	13 inches		1.3 million	1228800
9X6 inch	11 inch	##800,000	##786432	1024X768
		500,000	480000	800X600
7 inch		300,000	307200	640X480
5 inches

## ID card22mm X 32mmOrdinary ID photo33mm X 48mm##Second generation ID card##2 inch35mm X 49mm3 Inch35mm X 38mmHong Kong and Macau Pass33mm One inch larger40mm X 55mm##33mm X 48mmCar photo60mm International Logo1R

##Name of the document	Document size	Document name	ID size

26mm X 32mm	1 inch	##25mm ##Driver’s License	22mm X 32mm
		Black and white small one inch	22mm X 32mm

Visa to the United States	50mm	Large 2 inches	35mm X 45mm
Japanese visa	45mm X 45mm	Passport	33mm X 48mm
Graduation Photo		Driver’s License	21mm X 26mm
	Table: Photo Size Chart		Photo
Inch mark(inch)	Size(cm)		1 Inch

1/1.5

2.5/3.53.5/4.912.7/8.89##15.24/10.167inch##35.56/30.4816 inch12R16/1240.64/30.48##18 inch##18 inch##45.72/35.5616R20/1650.80/ 40.6418R##24 inch20R30/2476.20/60.96##32/2436 /2440 inch##101.68/81.28##106.68/81.28121.98/81.28

	2 inch	2R	##1.5/2
	5 inch	3R	5/3.5
	6 inches	4R	6/4
	##5R	##7/5	17.78/12.70
8 inch	6R	8/6	20.32/15.24
10 inches	8R	10/8	25.40/20.32
##12 inch	10R	12/10	30.48/25.40
14 inch	12R-	14/12

12R	18/12	45.72/30.48
14R	##18/14		20inch
			##20 inch
20/18	50.80/45.72
24/20	##60.96/50.80	##30 inch	24R-
		32 inch	24R
81.28/60.96		36 inch	24R
##91.44/60.96		##32R -	40/32
	42 Inch	32R	42/32
	48 inch	32R	48/32

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