Excuse me, what kind of old yellowed photos are effective?

Nowadays, many digital cameras can take nostalgic photos, but this means some simple color processing. The so-called nostalgia is that the photos are covered with yellow. In fact, we can also make some more realistic and textured nostalgic effects through PS, such as adding miscellaneous points and scratches. The photos processed in this way have the texture and effect of old photos, which is far from being as simple as changing colors.

We first open the photo in photoshop, and then turn it into grayscale mode. Click Image/Mode/Grayscale.

After clicking "Gray Scale", a dialog box will pop up asking us whether to throw away the color information. Click OK. In gray mode, some editing information in RGB mode is not supported, so we choose to throw away color information, only some photo editing information, which will not change the edited effect.

The next thing we need to do is to give the photo an old hue, but before we start, we need to switch the color mode back to RGB mode, because many color editing commands are not available in grayscale mode. Click "Image/Mode /RGB Color" to facilitate the following image processing operation.

Let's make a yellow color on the photo now, so it looks like it has been baptized by time. Click Image/Adjust/Tone, Saturation, or press the shortcut key CTRL+U.

Check the "Color" checkbox in the pop-up dialog box, set the hue to 34, saturation to 42, lightness to-12, and click "OK". The value set here is variable and changes according to the exposure of the photo. Click the "New Layer" button in the lower right corner of the Layers panel to create a new layer 1. Then use the paint bucket tool in the tool panel to fill the layer 1 with black. Next, select the "Filter/Noise/Add Noise" command in the menu bar, set the value to 16% in the pop-up dialog box, and select the "Gaussian Distribution" and "Monochrome" options. Then perform Image/Adjustment/Threshold to set the threshold distribution to 85%. It's time to add some simple scratch effects at the beginning of this step. Click Filter/Blur/Motion Blur and set the angle to 90 degrees and the distance to 999. Set the blending mode of layer 1 to "color filter", so that layer 1 can be perfectly combined with the background layer. Drag the layer 1 to the new layer and copy it.

Execute the add noise command on the copy of layer 1. Click Filter/Noise/Add Noise, set the number to 7%, and select Gaussian distribution and monochrome.

Next, execute Filter/Art Effect/Sponge, and set the brush size to 10, sharpness to 3, and smoothness to 5. Execute the "Filter/Noise/Add Noise" command, set the value to 8% in the pop-up dialog box, and select the options of "Gaussian Distribution" and "Monochrome".

Click Layer/New Adjustment Layer/Curve and select OK. Adjust the curve and set the input to 88 and the output to 2 1.

Click on the background layer, select the rectangle marquee tool, select some parts of the background layer, and copy and paste them into layer 2.

Next, select Layer 2 and click Filter/Texture/Particle. Set Intensity to 70, Contrast to 50, Particle Type to Vertical, and then click OK.

Then use the eraser tool to set the brush to 160 pixels and the opacity to 100% to erase some unnecessary parts in Layer 2. Set the blending mode of Layer 2 to Positive Overlay.

The effect of old photos is basically completed here, but it needs to be further improved. Select the layer 1 and use the eraser tool to erase some shiny lines to make the picture look more natural. Set the opacity of the eraser tool to 40% and the flow rate to 70%.

Finally, use the blur tool, set the brush to 160, and make some adjustments in layer 1 and layer 2 to make the picture more perfect.