What influence does light have in a photograph? how do you know if you have too much light or too little in a photograph? what can you do to adjust this?

Little light - dark images, sometimes objects cannot be distinguished.

Light - there is enough light to see everything clearly

Too lighted - lighting is too intense and distinguishing objects can be difficult.

Angles can be of help when trying to give more or hide light. This only works when you cannot control the light source (sunlight). Using artificial lighting can also be of great use when trying to manipulate light.

In some photo-editors, you can also remove or give light to the photo, which is a very useful tool.

Hope it helped,

BioTeacher101