Sunday, May 30, 2010

You have just bought a shiny new DSLR and want to move past Auto

Lesson 1

Remember that there are 3 ways in which the sensor reads light.
Shutter speed,
aperture, and
ISO.

Adjusting any of these will affect the other two in terms of a correct exposure (mostly, but more on this much much later).

Pop the 50mm on. Move the little dial off Auto, or P or whatever it is and onto M.
You still have the light meter to let you know what the exposure is doing.

The dial near your shutter button by itself will adjust the shutter speed.
I think you need to hold down another button to adjust the aperture.
And the buttons on the back (not sure if there is a direct ISO button on top) will adjust the ISO.

Adjust the shutter speed only, take 10 photos -- adjust the shutter speed between each photo. Look at the preview of the images on the back of the camera and see if you can see any difference.

Now, adjust the aperture only and take 10 photos. Look at these and see what differences there are. Now do the same thing (10 photos) and focus on something about 1m away.

Ok. Now, only adjust the ISO. Take 10 pics. Can you see any difference when you are reviewing them?

When this is done, we'll move on to lesson 2.