Focus!!!

[Lula]

Hey
I saw this pics in another forum, i thought i would try to do it with my cam .... when i got home i came out with this result....... :crazy:

in another forum

my results

damn....i need some hints!
in the 1rst one i used manual focus in the 2nd i was having trouble focusing :roll: so i changed to auto..............i din't really liked the result..........

 

[drlynn]

The top result was obtained by selective use of aperture to control depth of field.

Shooting wide open (small f/stop number, eg f/2.8) will cause only one marble to be in focus. Maybe even half of one marble.

Stopping down to say f/22 will cause the whole string of marbles to be in focus.

I hope that helps.

 

[Big Mike]

In your second shot...the wall is in focus but neither of the objects is sharp. I think you were trying to get the dark one in focus and it looks like you (or your auto focus) missed it.

Like the Doc said...this is an experiment with DOF, which is controlled by changing the aperture.

 

[Lula]

Thanxx for the info!
8)