Yashica CS 250 AF [27/33] Flash photography with dedicated accessories

If you are shooting in the manual mode with the dedicated flash CS-1 10AF, you

can easily find the correct aperture according to the shooting distance (with an ISO

100 or 400 film). First, estimate the distance from the camera to the subject with

your eye. Then, find a distance value that is most close to your camera-subject

distance in the left side of the table. In the right side of the table, you will find the

correct aperture corresponding to the ISO speed of the film you are using. If you

shooting a subject at a distance of about 2 m with an ISO 100 film, for example,

you can take correctly exposed pictures if you set the aperture to 5.6.

In the following cases, you can use flash even in the daytime.

By using this technique, both the subject and background will

turn out perfectly exposed.

(1) When the subject is standing against a bright back" ground,

such as backlighted portraits and people standing in front of a

window;

(2) When the subject is in the shade of a tree, or when the

subject's face is illuminated by sunshine filtering through

foliage;

(3) Portraits in the early morning, In the evening or on a rainy

day when the light is faint.

Flash Photography with Dedicated Accessories

When flash pictures are taken with the CS-1 10AF using an AF Converter or AF Extension Tube, the distance data on the lens is

not correctly transmitted to the camera. In this case, you will have to set the aperture manually because it is impossible to obtain

correct exposure in the auto mode. To set the aperture, refer to the exposure guide or calculate the correct aperture with the guide

number 11 of this flash. If you want to take auto flash pictures with an AF Converter or AF Extension Tube, use the flash CS-

250AF and shoot in the "Av" or "M" mode. It will allow you to take correctly exposed TTL auto flash pictures.

* If you take flash pictures with the CS-110AF, caution is required because part of the flash light may be cut by the lens front edge