>From: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>Subject: Re: constant aperture zooms
>Date: Mon, Sep 24, 2001, 4:44 PM
>
> I'm sure this is self-explanatory to most of you, but not to me. ....."the
> background will tend to stay at the same density".. Why?
"Density" in this reference refers to the amount of exposure in the image.
Therefore with a constant aperature zoom you can manually set the exposure
and basically leave it without having to worry about the background becoming
too light or too dark while zooming, because the flash takes care of the
subject. With a variable aperature zoom you would have to change your
exposure every time you changed the lenses focal length.
Nick
-
This message is from the Pentax-Discuss Mail List. To unsubscribe,
go to http://www.pdml.net and follow the directions. Don't forget to
visit the Pentax Users' Gallery at http://pug.komkon.org .
