We have been discussing a few technical topics on the blog in the last few articles, with pixels and how the sensor works and before I let your brains relax I want to show you what the inside of your camera looks like and how it works.


So those are the bits that make up the important components in your digital camera. Here is how they work for you in order to save the picture you are taking.

Your LENS, which is made up of ceramic, plastic or glass (or a mix of these three) components collect light and points it into your camera.

The light must pass through your APERTURE which you have set to be as open (F1) or as closed (F29) as you need it to be. If you have kept it relatively closed then less light is going to be able to enter into the LENS.

Your MIRROR takes the light (image) that the LENS is projecting onto it and points it in the direction of your VIEWFINDER so that you can compose your image before pressing the shutter button.

The shutter button controls the SHUTTER and when you press it to take the picture – the SHUTTER flips up to expose your SENSOR. The SHUTTER is placed just in front of your SENSOR and depending on the shutter speed you have set – this is the amount of time it will allow the SENSOR to be exposed to the incoming light traveling through the APERTURE and the LENS before it moves back into position to block the light again.

A long shutter speed will obviously allow more light into the SENSOR and a shorter shutter speed (used in action photography to capture high speed movement and freeze it) will allow very little exposure to the SENSOR.

The SENSOR (as we have discussed in great detail in a previous article) gathers the light and converts it to ‘bits and bytes’ before the information is transferred onto your memory card.