Compensation of Exposure

Due to special lighting conditions, or in situations of high contrast such as occur in repro-copying, it may not be desirable to take the picture as is.

The amount of exposure the film receives is determined by a combination of the lens aperture and the shutter speed. Since the two are interrelated, different combina· tions will give the same amount of exposure. The best combination depends on the results desired . Use fast shutter speeds to freeze motion or slow ones to create deliberate blur . Sma ll apertures give greater depth of field ; large ones let the subject stand out against an out-of-focus background.

) ust as with automatic operation, care must be taken to be sure the ASA/f-stop/shutter speed combinations are within the EV range of the meter .

To compensate exposures, the following three methods are used :

1.Compensation by manual exposure control {M anual override)

If you want deliberate underexposure or over-

exposure, reset the green needle to a numb er higher or lower than the number indicated by the black needl e in the shutter-speed scale.

2.Resetting the ASA dial temporarily

The picture is taken after resetting the ASA dial by the amount of compensation, with other

factors left unchanged.

For instance, when a film of ASA 100 is used: And a compe nsation by one stop increase is desired, adjust the index to 50.

And a compensation by one and 1/3 stops decrease is desired, adjust the index to the dot following 200.

Remember to return the ASA dial to its origina l position upon comp letion of picture-taking under the adjusted setting.

3.Using the exposure memory lock

When there are severe brightness differences be- tween the subject and the background, you will often obta in better results using the ELW's center-weighted me-

tering system and memory lock, which is integrated into the se lf-t im er.