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Three easy ways to return to the standard program combination are to:
1.) flip to a different mode and back to P, or
2.) turn the D40 off and back on, or
3.) spin the rear dial back to its original position.
The *P symbol goes away when you've returned to the standard combinations.
The standard combinations are f/4 at 1/60, f/5.6 @ 1/125, f/8 @ 1/250, f/11 @ 1/500, etc.
A shifted set might use f/4 @ 1/1,000, f/8 @ 1/500 or might use f/4 @ 1/2, f/5.6 @ 1 sec, etc.
Don't worry, just flick the rear dial until you get the combination you prefer.
A, S and M Modes
If you want to use only one aperture or one shutter speed then use S or A mode and the camera
will automatically pick the other value. I never use these; I shift the program instead.
If you want to set both the hard way, use M, manual, mode.
In A or S mode you can only set one of the two values because the camera is setting the other
one for you.
A Mode: Aperture Priority
In A mode you choose the Aperture and the D40 chooses the shutter speed.
S Mode: Shutter Priority
In S mode you set the Shutter and the D40 sets the aperture.
If the D40 runs out of available apertures you easily can get under or over exposure in S mode:
watch that the D40 can select a correct aperture for your lighting.
M Mode: Manual Exposure
You have to set everything the hard way.
No one uses this mode except in complex conditions. Ignore old-timers who tell you you need
Manual mode; they say that because that's the only mode cameras had back in the 1950s.
I look at the LCD to check exposure. You can use the bar graph in the finder - but why? If you
wanted to do that use another mode and let the D40 do the setting for you.
The rear dial sets the shutter speed in manual exposure. To set the aperture, hold the +/- (*)
(diaphragm) button near the shutter and turn the rear dial.
© 2007 KenRockwell.com 12 converted by Sándor Nagy