White Point/Black Point Method

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/Zbutton. 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 (/gbutton 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.

 

 

EV

7 31

Reset

 

ISO

100

 

 

0

: White point

 

 

 

$

: Black point 3 4

5 6

7 8

9 10 11 12

Exposure Digital Function Metering

9

175