Nikon Camera F3AF Bedienungsanleitung PDF herunterladen (Seite 37)

FOCUS —continued

Special Situations

The F3AF provides autofocus and focus-aid operation in the

majority of cases, inciuding such difficult situations as fast-

moving sports events, subjects seen through glass, or scenes

containing point light sources, such as the flame from a candle

or a streetlight at night. However, if the overall subject is dark in

tone (e.g. when the illumination level is less than EV 4 at ASA/

ISO too), low in contrast, or lacks a distinct vertical line, the

focus-impossible warning blinks or glows continuously to inform

you that the camera’s TTL image displacement detecting sys

tem will not work. In this case, you can set the lens' A-M switch

® to M and focus on the main subject manually using the matte

portion of the focusing screen. As an alternative, perform auto

focus or focus-aid operation using another subject, if available,

which is located at the same distance as the one you want to

photograph; then, with the focus lock button depressed on

autofocus or without changing the distance setting in focus-aid

operation, point the camera at the original subject and take

the picture.

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Nikon Camera F3AF Bedienungsanleitung Seite 37