Nikon F25B manual Focusing

FOCUSING

Focusing isdone at full aperture with Nikkor lenses fitted with an automatic diaphragm . This technique provides the brightest possib Ie images on the focusing screen for easy focusing and composing. It also minimi zes depth of field so that the image snaps in and ou t of focus dis- tinctly.

The Nikon Type K screen comes with the camera as standard equipment. To focus, turn the focusing ring on the lens until the two halves of the rangefinder image coincide to form a single, crisp image; when using the microprism ring, turn until the microprism pattern shifts to a sharp and crisp image. You can also focus on the matte fie ld that surrounds the rangefinder/microprism centra l area.

The lens can also be prefocused using the distance scale engraved in both meters and feet on the lens barrel. Sim- ply turn the focusing ring until the desired camera-to- subject distance (as measured or estimated) is lined up with the distance scale index on the lens barrel. This technique is useful for candid shots of elusive subjects when time does not permit through-the-Iens focusing.

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