[Linux-Anyway] Re: Vacation page
- From: "Mercy Design" <MercyDesign@xxxxxxxxxxxxxx>
- To: <Linux-Anyway@xxxxxxxxxxxxx>
- Date: Tue, 17 Sep 2002 19:25:32 -0400
> >But thank you very much. There was no stop on the camera, nothing
fancy...
> >just a flash & a button lol.
> >
>
> There's a trick, though. Most automatic cameras have a focus/exposure
> lock. The metering automatic is set to expose the metering area (mostly
> marked by a smaller square or circle in the viewfinder) to 18% grey,
> which is halfway between white and black (don't ask, just trust me),
> they usually autofocus on this area too. These adjustments happen before
> the shutter goes off, and it is easy for cameramakers to offer this as
> feature -
I promise you, there is no such feature on this camera.
> you can half-depress the button, the settings are locked, you
> can reframe and press the button all the way. So depending on your
> wishes, you can choose the exposure. A sunset, for example. If you want
> to concentrate on the sky, point the camera at the sky, lock, reframe
> and shoot - it'll expose the sky correctly, and the ground will be solid
> black. If you want the ground, point at the ground, lock, reframe and
> shoot - which will overexpose the sky. I used a similar technique once
> to photograph my motorcycle with an impressive cloud background, and
> stitched together the correctly exposed sky with the correctly exposed
> bike in Corel PhotoPaint.
Interesting... if my camera could do that. :) It doesn't.
>
> An error you see very often, and that could be easily resolved with
> locking exposure and focus, is the motive of two persons standing side
> to side. People tend to use the dead-center composition technique, which
> works fine with only one person. But with two of them, the center is
> empty, so the metering/focussing area points to, for example, a bright
> sky. So the camera sets the focus to infinity (instead of 3 meters) and
> exposes the sky to 18% grey, which is usually at least 5 stops above the
> correct exposure for the faces. So you get a blurry underexposed
> picture. The lock-reframe-shoot technique helps here most.
>
> Why the hell am I saying all this
I have no idea.. because my camera can't do that :)
Mercy
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