OK I hope I can explain well so that it makes sense.

Imagine your own eye: just like the pupil in our eyes which opens and closes depending on the amount of light that is projected into them, in the same way a camera has an eye too – which is the aperture. Our pupil opens up to let in more light and when there is too much light, the pupil gets smaller to let in less light.

The aperture (the “eye” of the camera) – does the exact same thing for the camera, but the aperture “hole” opening is within your lens.

So, aperture is basically the amount of light that enters your camera through the lens “hole” or the “eye” of the camera. Once the light enters the “hole” opening in the lens, it then enters your camera.

Aperture is measured in the size of the “hole” opening in the lens which is measured in a measurement called “f-stops”. The size of the aperture “hole” opening determines the f-stop number. Basically the rule is:
- The bigger the aperture hole opening = more light coming in, which gives a smaller f-stop number.
- The smaller the aperture hole opening = less light coming in, which gives a smaller f-stop number.

What aperture does in terms of your photos is control the depth of field (DOF), which means how much of the image you want to be in focus. Controlling the amount of light that comes into the camera by the size of the aperture hole opening allows you to control how much focus you want.

- a shallow depth of field simply means that you are focusing on something specific and the rest will be blurry.
- a deep depth of field, therefore means that more of the picture will be in focus.

To control aperture on your camera you will have to see if has an “Aperture Priority” function. If it does then you can choose your aperture and make it fast or slow by turning the dial on the camera. Your camera will automatically adjust the rest of the exposure settings. If you set it to “Manual”, you will have to take care as you will have to manually control the rest of the exposure components (things like Shutter Speed and ISO).

I remember you made a connection between the camera film of 100,200 & 4OO and digital cam but I forgot how it is translated in digital camera. Can you pls explain it to me again.

Thanks