Tuesday, March 04, 2008

Things that make you go hmmmm . . .

I'm the first to admit that I do not have a scientific brain, nor do I pretend to know anything about anything that matters. I'm sure that there is a logical explanation for this, but can somebody please tell me, in the simplest terms possible, why Proxy's pictures turn out like this:

. . . and Adam's pictures turn out like this:

. . . but Noah's always look like this:

They all have brown eyes after all. Again, maybe I'm stupid, but I had no idea that I wouldn't have the red-eye problem with Noah. It's never happened though. Not once in the hundreds of pictures that I have taken of him. All I can say is thank goodness for the red-eye tool in Photoshop. Just so you know, I'm still waiting for somebody to come up with a blue-eye tool so that it's not so hard to fix Proxy's pictures.

I really miss Proxy, by the way.


kjae said...

I don't pretend to know anything about anything either, but here's what I assume:

If you use a flash in a dark environment, you often get a red eye effect. This is because the light of the flash is reflecting from the retina, which is covered with tiny blood vessels.

The more open the pupils are, the more red eye effect you get in your photos. Red eye is more pronounced in people with light eye color. It is also more pronounced in people with blond or light-red hair and in children.

When you take photos of animals, the red eye effect can be quite different. Animals have a reflective layer in the back of their eyes behind the retina called the tapetum. This layer enhances their night vision. The colour of the tapetum gives you blue, green, yellow, or white eye effect. With animals, the effect can have place even when the ambient light is sufficient to prevent it in humans.

Tapetal color can vary to some extent with coat color. Some animals, and a few dog and cat breeds (for instance, blue point siamese cats), have no tapetal pigmentation. These animals show a red reflex as humans.

The color of the eyes in the picture also depends on the angle at which you take a photo. Taking pictures of the same animal from different positions of your camera may produce different results.

Yellow or green eyes are okay in pets photos, but if you see this in photos of humans, it may indicate a serious problem.

Julie said...

You are a genius! So, what you're telling me is that Noah doesn't get red eye because he has dark hair and even though they all have brown eyes, Noah's eyes are darker brown than Adam's, and Proxy's eyes go blue because he's a dog and he has something else going on behind his eyeballs? Got it. I clearly should have just asked you first.

Thanks woman!


Anonymous said...

Okay, Kelly did NOT just come up with that on her own! I smell wikkipedia plagerism. "Tapetum"...come on.