What is Exposure in Photography? Photography for Beginners
What is exposure in photography? I know you will understand this no problem. Exposure is actually a simple concept that is all too often described very badly! When it is explained to you using straightforward language and visualisation you will totally ‘get it’!
That’s what we are going to do in this first episode. I will explain what actually happens when you take a photograph and what exposure in photography actually is.
Here is a summary of the show along with the links and visuals referred to in this episode;
- Most creative types (like photographers) have a dominant right brain meaning that processing the technical and/or scientific aspects of photography can be a struggle. That is why I am only going to delve into these when absolutely necessary.
I talk about how your camera records an image and sensors are mentioned more than a few times. Since they are tucked up in your camera where you can’t really see them it might be helpful to show you an example;
If you want to go deeper into how your camera captures an image – check out this geek link.
- Exposure in photography is simply how much reflected light you expose your camera sensor to in order to capture a scene. If you allow too much light in your image will be too bright (overexposed) and if you don’t allow enough in your image will be too dark (underexposed).
- You control the amount of light that enters your camera using your aperture and your shutter speed.
- Aperture is the opening in your lens that allows the light to pass through and hit your sensor. It can open to different sizes. The opening is created by the shutter blades.
- Shutter speed is how long you leave the aperture open before shutting it again.
- If you have used your aperture and shutter speed to let in as much light as possible but you still need more then there is a way to maximise the light you have allowed in by changing your ISO.
- Increasing your camera’s ISO setting will make your camera sensor more sensitive to light.
I give you some good analogies throughout this podcast episode which really help you to understand all of these concepts.
This is a whistle stop tour of exposure. The episodes that follow will dig much deeper into each element in turn and before you know it you’ll be talking apertures, shutter speeds and ISOs like a pro!