How To Spot a Photo That’s Been Retouched

  • November 12, 2010
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Was Hollywood’s most devoted husband caught canoodling with an extra—or is your favorite tabloid faking you out with a Photoshopped picture? Here’s how to tell.

You Will Need

  • A keen eye
  • Photoshop (optional) (optional) (optional)
How To Spot a Photo That’s Been Retouched: Look at the lines

Step 1: Look at the lines

Look at any square images in the photo, like road signs. Natural photos don’t contain perfect 90-degree angles—but computers even them out.

How To Spot a Photo That’s Been Retouched: Find patterns

Step 2: Find patterns

Look for recurring images—like the same cloud pattern or a group of people that is repeated elsewhere in the crowd. This indicates that a part of the picture has been replicated to cover up something else.

How To Spot a Photo That’s Been Retouched: Study shadows

Step 3: Study shadows

Study shadows to make sure they’re consistent. If two people in a photo are looking at each other, but the shadows on their faces indicate they’re both looking directly at the sun—bingo! You’re looking at a composite image.

How To Spot a Photo That’s Been Retouched: Inspect seams

Step 4: Inspect seams

Look closely at where body parts meet. When a head has been placed on someone else’s body, it often appears at an odd angle and/or at a weird distance from the neck.

How To Spot a Photo That’s Been Retouched: Use Photoshop

Step 5: Use Photoshop

Import the image and view it in Photoshop, if you have it. Click on “image,” then “adjustments,” then “hue/saturation.” Set hue to “low” and saturation to “high.” Now scroll the light bar back and forth. Splotches of discoloration indicate photo tampering.

During John Kerry’s 2004 presidential bid, someone merged a picture of Kerry at a 1971 peace rally and Jane Fonda at a political rally one year later to make it seem as though they were protesting the war together.

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