Flash: The Dreaded Green Eyes

For people, it's red and for almost all animals it's green. By now, the vast majority of the processing software can fix the red eyes with just a click of the mouse. But for cats, dogs and the other animals, they get the green eyes with the flash in their face. Most software cannot process it. Here's my way of almost removing the green eyes in Lightroom, but it's not perfect, Lightroom: How To Remove The Green Eyes in Animals

Buzz The Cat

If you look at the EXIF data from this photograph, you will see:

Exif Type Exif Data Explanations
Model Canon EOS 7D
ExposureTime 0.025 1/40sec
FNumber 4 wide open
ExposureProgram Manual Manual mode
ISOSpeedRatings 1600
MeteringMode Pattern
Flash Flash fired, compulsory flash mode
FocalLength 160 70-200L f/4 lens, equiv 256mm

What the EXIF data doesn't tell you:

  1. The cat is scared, it's the first time ever in his life that he went out in the “world.” He's 7 month old.
  2. The camera setup, from the table, is: Manual mode, ISO 1600, 1/40sec and f/4. I was around 3½ feet away or 1 meter to 1.1 meter. At that distance and focal length, the depth of field is: 0.15 feet or around 4 centimeters. That's why the eyes are in focus but the nose it not.
  3. The flash is set to E-TTL II, bounced behind me at around 45°. I'm in a large hall. The wall, behind me, is about 10 feet/3 meters away. If you look closely into the cat's eyes, you will see my reflection, the various people, and the layout of the hall behind me. The E-TTL II did all the exposure job.

Note the most important part. I had to use my “magic” to get the cat to look at me straight on. Straight on, flash and no green eyes, the eyes are black!

When using the flash, I almost always set the camera to manual with:

  • The f/stop for the depth of field instead of controlling the flash
  • The speed for the ambient light
  • The flash in automatic to adjust the power to the right amount for the aperture that I selected