Focal length

 18mm focal length 

 35mm focal length

50mm focal length

Demonstrating camera techniques using are own images

Here i slowed down the shutter speed to create the blurred effect 1/15, as where if we was to increase the shutter speed his hands wont show up blurred 1/200.

In this image i have lowered the ISO to 200 and shutter speed and the F stop is around 8.2 to get an average depth of filed, but if i had the F stop on 12.0 or above it would of been a long depth of filed and the image would be more sharper where as in the photo above we see the foreground if sharper and the background isn't as sharp.