Lets have a look on a very simple DSLR camera from Nikon, D3100.
Basically all cameras will have same look as this camera except for the professional one because they are getting a bit complicated. As you can see the name of the buttons above here, so they have a different functions. But I want to talk only about Shooting Mode Dial and Main Control Wheel buttons.
Shooting Mode Dial
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBOslxIS0A4R4WEZNLVaKJGVeVUyLpl6Em9dMRL4bH7TVrd7xoLOyQol8gG4_TTGhUEUnBdvV5zfXh74NoP_ZSWwoxp6l8rGsTF-seJblYi4U2RgMVeOshbhoe0HYEhMT79tBvvbnl_gI/s1600/Nikon-D5100-shooting-mode-dial.jpg)
The control wheel is used to adjust the setting on the camera. Let say you choose to use Aperture mode, so use the wheel to adjust how big the aperture you want. You can see in the image on left, where the yellow circle and the number 'F5.6' are showing current aperture size. In case you forgot what aperture refers to, click here.
When using shutter speed mode, the same thing happens where you adjust shutter speed using this wheel. As you can see below those numbers, there is an indicator which has positive and negative signs. While adjusting the Main Control Wheel, refer to the indicator to make sure that you make indicator goes around the point 0. (Positive = overexpose , Negative = underexpose)
For other buttons and their functions, please read the given manual booklet because i am not going to explain that as they are not as important as these two(Shooting Mode Dial and Main Control Wheel buttons) when shooting photos.
For other buttons and their functions, please read the given manual booklet because i am not going to explain that as they are not as important as these two(Shooting Mode Dial and Main Control Wheel buttons) when shooting photos.