"Jul" wrote in message
. ..
Using Auto - a camera sets for me the aperture and shutter speed .
If I want to do it myself, how to set right parameters? Does it only
practice or exist the rules that will help me to set the "correct" or
close
to correct params?

if my subject 5 ft and 500 ft away from me and at both cases at the
center
of the frame how the params will change , and if I need at both case keep
only subject at focus, does it possible?

Can reference me to any sourse where I can find answer on these and
related
questions (not only that smaller aperture increase DOF)?

Thanks

If you can set your camera to shutter priority you set the shutter speed and
the built-in meter will set the aperture. If you set the camera to aperture
priority you set the aperture and the camera will automatically set the
shutter speed. If you set the camera to manual you are on your own. You
will have to either use a meter (the one in the camera might work) or a good
rule of thumb is the Sunny 16 rule. On a clear sunny day you set your
shutter speed to whatever the ISO is set to, and set the aperture to f16.
This will get you in the ball park, but you will still have to check your
shots with the LCD screen on the back of the camera and adjust as necessary.