Nikon Before Using the SB-21, Usable Lenses, AF Zoom·Nikkor lenses cannot be used with

indicator lines

Light output indexes

See 38 .

Lens focal length scales

Use white index for lenses in normal position, red index for lenses in reverse position .

ISO film scale

Reproduction ratio scales

Use white lines for lenses in normal position.

red lines for lenses in reverse I

Lens selector knob

Fi lm ring

Film index

Aperture lreproduction ratio dial

•To ensure proper protection for the S8 -21, be sure to leave the expanded polystyrene in the leatherette case.

BEFORE USING THE SB-21

•Do not fire the flash close to anyone's eyes.

•The 58-21 is primarily designed for stereoscopic shooting. It should not be used for reproducing docu- ments with a glossy surface.

•With the Nikon F-401 s/N4004s·, the 58-21 cannot be used for TTL auto flash, or as a slave unit for TTL multiple flash photography.

•The Nikon N4004s is sold exclusively in the U.S.A.

USABLE LENSES

Most lenses with a 52mm or 62mm filter attachment can be used with the 58-21 . Certain lenses, however, require special care .

With AF Nikkor lenses, focus manually. AF Micro- Nikkor 60mm f/2.8 and AF Micro-Nikkor 105mm f/2.8 can be used for both autofocus and manual focus . However, when the 58 -21 is used with other AF Nikkor lenses, performing autofocus may damage the camera .

AF Zoom·Nikkor lenses cannot be used with the

58·21. As the focusing ring on these lenses is so light, they will not remain in the focus position when the 58-21 is attached.

With non·AF zoom lenses:

a. Focusing a zoom lens with the 58-21 attached causes the 58-21 main unit to rotate . If necessa ry, remove the 58 -21 after focusing, then reattach it in the desired position. Also ncte that even slight pres- sure on the 58-21 main unit may move the lens focusing ring resulting in an out-of-focus image.

b. With a zoom lens, always perform TTL auto flash shooting. In manual flash shuoting, the proper aper- ture for the zoom lens cannot be read from the 58-21 's exposure calculator dial.

c. Vignetting may occur in the following cases:

•When using Zoom Nikkor 35-70mm f/3.5, in normal position , at 35mm focal length for shooting a sub- ject located near the closest focusing distance.

•When using Zoom-Nikkor 35 -1 35 mm f/3 .5-f/4.5,in

normal position , for macro focusing.

Lenses shorter than 35mm cannot be used in nor· mal position. Vignetting may occur when these lenses

are used in normal position. Use in reverse position.

31