Simulate the effects of a lomo camera. Photos taken with a lomo camera have high contrast, twisted colors, and a noticeable vignette.
Lomo photos have a strong and noticeable vignette. We'll start off by adding a strong vignette to the photo.
Open a photo to edit.

Follow the steps below according to the version of Photoshop you're using:

Now we'll change the colors to match those produced by lomo cameras. We won't be using any color adjustment tools. Instead, we'll be modifying individual channels.
Inside the Channels pallet (Window> Channels), select the red channel.

With the red channel selected, use the Brightness/Contrast tool (Image> Adjustments> Brightness/Contrast) and increase the contrast. The higher you set the contrast, the stronger the color effect will be. I found that increasing the contrast by 50 produced the most realistic results.

Now select the green channel and use the Brightness/Contrast tool (Image> Adjustments> Brightness/Contrast) to increase the contrast by the same amount you did in the previous step.
Select back the RGB channel (Ctrl+~) to view the final results.
Roll your cursor over the images to see the before and after effect.



