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Digital Exposure Metering Function
The average reading method is generally used to produce a picture with
a smooth gradation from the bright areas to the dark areas within the
viewing angle.
On the other hand, with the Optio 750Z in the Exposure Metering mode,
you can also use a rather specialized reading method that involves
making the brightest area within the viewing angle completely white. This
lets you take pictures of a subject silhouetted against a pure white
background.
To use this method, follow the steps for metering the exposure and
displaying the EV scale and then press the b/Z button. A white point
corresponding to the metered value appears on the EV scale. Use the
four-way controller (45) to set the current exposure value on the EV
scale to the white point and then press the 4 button. The screen
display changes to show the combination of aperture and shutter speed
appropriate for the current exposure value. By using that combination of
values to make the settings on the camera used to take the picture, you
can give the bright area a whitish effect.
The opposite approach can also be taken to give the dark area a
blackish effect (using the black point). Press the (/g button while
the EV scale is displayed and a black point appears on the EV scale.
Following the same procedure as for the white point method described
above, decide the combination of shutter speed and aperture and make
the appropriate settings on the camera used to take the picture.
When you use the white point or black point method, the resulting picture
changes depending on the brightness of the area first metered, so try out
different readings.
White Point/Black Point Method
ISO
ISO
ISO
EV
EV
EV
100
100
100
3 4 5 6 7 8 9 10
10
11
11
12
12
3456789101112
77
3
11
3
Reset
0 : White point
$ : Black point