Before Using the SB-21, Usable Lenses

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.

SB-21 specifications

The Nikon SB-21 is a highly regarded external flash unit that has earned a reputation among photographers for its versatility and reliable performance. Designed for use with Nikon’s line of DSLR cameras, this compact flash unit is favored by both amateur and professional photographers alike.

One of the key features of the SB-21 is its powerful guide number, which provides robust illumination in various settings. This allows users to effectively light subjects even in challenging low-light environments or larger spaces where additional lighting is essential. The SB-21 also boasts a range of customizable settings, giving photographers control over the intensity and direction of light.

The flash offers a zoom head, which allows it to cover various focal lengths. This adaptability is particularly beneficial for photographers who frequently switch between wide-angle and telephoto lenses. The ability to zoom not only enhances light coverage but also ensures that the flash can be fine-tuned to match the specific needs of each shot.

In terms of technology, the SB-21 integrates Nikon’s advanced i-TTL metering system. This intelligent system measures the light needed for a scene and adjusts the flash output accordingly, resulting in well-exposed images with minimal user intervention. This feature enables photographers to focus on their composition without worrying about manual exposure settings.

The build quality of the SB-21 is another highlight, as it is designed to withstand the rigors of regular use. It features a durable exterior that enhances its longevity, making it a trustworthy tool for outdoor and event photography. Additionally, the flash unit supports wireless operation, enabling users to trigger it remotely for creative lighting setups.

The Nikon SB-21 also includes a variety of accessories, such as diffusion panels and bounce cards, allowing further customization of light output to achieve specific effects.

Overall, the Nikon SB-21 stands out as a reliable and feature-rich external flash unit that meets the demands of various photographic styles. Its versatility, intelligent technology, and robust construction make it an essential accessory for any Nikon photographer looking to enhance their lighting capabilities. Whether shooting portraits, events, or creative projects, the SB-21 delivers exceptional performance and quality, making it easier to capture stunning images in any lighting condition.

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

Models: SB-21