On 10 Jul 2003 19:51:57 GMT, [email]twk53aol.com[/email] (TWK53) wrote:
I'm not a Nikon user, so I don't know the specifics of their cameras,>I just inherited a Nikon FA (lucky me, it's in pristine shape--maybe 10 rolls
>of film through it). I have a question about the bracketing feature.
>In the various exposure modes (P, A, S, and M) what is being manipulated to
>For example, in aperture priority mode, is the shutter speed being slowed down
>or sped up? Likewise, in shutter priority mode, is the aperture being changed
>(causing depth of field considerations)?
>Or is the camera messing around with the ASA setting, thus leaving shutter
>speeds and f-stops essentially where they are at the "0" bracketing position?
>Just wondering what is happening.
but most cameras that have the same feature do indeed do like you
hypothesized about changing shutter speed and/or aperture depending
upon what type of automatic exposure is being made. It wouldn't do
much good for the camera to change the ASA setting (other than that
itself would cause a shift in either shutter speed and/or aperture).
In most practical applications, you will probably never use that
feature. It's mostly for corrections using filters and oddball film
speeds. Most modern cameras can make the compensations for filter
correction with their own light meter...but some models that use
unusual metering patterns do not compensate for certain filter types
(such as polarizers).