In taking a photograph what would happen to the image if you cover up the bottom of the lens?

In taking a photograph what would happen to the image if you cover up the

bottom of the lens?

Factors to consider: bright light, shadow, light source and where it originates

color of light, light and darkness

If you cover up the bottom of the lens with your finger the picture will give the

illusion of a "peach" or ''pinkish" hue of color toward that lower portion of the

picture when it comes out. I'm referring to IF YOU ARE using a digital camera.

You may not realize or remember your finger being in the picture but this is what

you will see, depending on the skin tone of your complexion.

Nothing else will really happen "per se", but I work in a photo center.

There are other factors, though. If you do this intentionally as an experiment,

using paper, cardboard, plastic etc.

Best case situation is you have a Digital camera and you are in a brightly lit

room. You aim to take a photo at your family and your thumb is slightly over the bottom.

You don't realize it until you have taken the picture and you see them in the photo--

but you also see an "illusion" of a pink tinge of "color".

"Crap!" you think out loud. "I have to take another picture."

Now let's say for neutral point of perspective that you are outside and it is noon. There are no clouds and the sun is directly over head. Any shadows cast in the line of sight

of your camera will cause the entire picture of what you are aiming for will darken your

picture to a "gray" hue. Even still under controlled conditions there are other things

you have to THINK about.

1 What you are aiming at, 2if the object of what you are focusing

on has too much shadow,3 if you are too close to your object and 4.If you still have

enough light at all or the bottom part of your view screen is covered

completely