Gomper Photography: Understanding canon's Sensors

Canon

Understanding Camera Bodies

Okay so when you are looking for a camera there are a few things you should know before you even think about purchasing a camera the big one is the

Sensor

There are 2 different types of sensors for any camera

Full & Crop Sensor

Full Sensor

Pros

Better noise performance at higher ISO
Wider shots (a 50mm is actually going to shoot at 50mm)
A better quality picture

Cons

Unless you want to get an old and crusty full frame you are going to spend way more money
The bigger sensor requires a bigger actuator which means your fps is lower (usually)
limited selection
can't use EF-S lenses!!! (that lowers the lens selection to only the more expensive EF lenses

Cropped Sensor
Pros

Huge selection
You get a little extra zoom out of your lenses
like I said before usually a faster fps
Cheap
Can use any Canon lens mount

Cons

Worse Noise performance at higher ISO
slightly less quality picture

Now that I have said all that stuff lets go through some of them and figure out exactly what they mean!
Lets start with
how each sensor effects the zoom of a lens

In the above diagram the Circle represents the lens and the square the sensor
You can see that the full frame camera fill up more of the lens which means you get more of the picture!
This means you get a more zoomed out picture. Then you have the cropped sensor you can see that it doesn't take up as much of the lens. That means it gets less of the whole picture and you get a more zoomed in Picture.

Next lets go over
The quality of picture you get from a bigger sensor vs smaller
The quality can be summed up and effected most by the amount of noise you get on your camera at higher ISO
With sports you will have your ISO up very High... painfully high!

It might not be obvious on the picture above but I didn't take the picture. I recently sold my full frame camera so I couldn't take a comparative picture.

Above is a picture I took on my crop sensored canon 7d my ISO was as high as it could get. Do you see the graininess of the picture. Well on a full frame camera the noise wouldn't be as bad.

Lastly lets go over

Lens mounts

EF-S

EF-S lenses are easily identified by the little white square. These lenses are specifically designed for crop sensors. These lenses can not be used on full frame cameras.
EF