Nikon 2181 user manual Built-in flash and vignetting, Using the lens hood, Attaching the hood

■The built-in flash and vignetting

• The built-in flash cannot be used over distances of En less than 0.6 m (2.0 ft.).

• To prevent vignetting, do not use the lens hood.

*Vignetting is the darkening of the corners around the image that occurs when the light emitted by the flash is obstructed by the lens hood, or lens barrel, depending on the focal length or shooting distance.

Digital-SLR		Supported focal length/
cameras		Shooting distance
D700	•	18mm/No restriction
D300/D200/	• 18mm/1.5 m (4.9 ft.) or greater
	• 20mm/1 m (3.3 ft.) or greater
D100
	•	24mm/No restriction
D90/D80/D50	• 20mm/2.5 m (8.2 ft.) or greater
	•	24mm/1 m (3.3 ft.) or greater
D70-series	•	24mm/1 m (3.3 ft.) or greater
D60	•	24mm/1.5 m (4.9 ft.) or greater
D40-series	•	24mm/2.5 m (8.2 ft.) or greater

Built-in flash on the D100 has an angle of coverage suited to focal lengths of 20mm and greater. Vignetting occurs at a focal length of 18mm.

■Using the lens hood

Attaching the hood

Align the lens hood attachment index (A, either of two indexes) 2 on the hood with the lens hood mounting index 4 on the lens, and turn the hood counterclockwise (as viewed when holding the camera with the lens facing away from you) until it clicks into place (Fig. B).

•Be sure that the lens hood mounting index is aligned with the lens hood setting index (B) 3.

•If the lens hood is not correctly attached, vignetting may occur.

•To facilitate attachment or removal of the hood, hold it by the base (near the lens hood attachment index) rather than its outer edge.

•To store the lens hood, attach it in the reverse position.

Detaching the hood

Hold the lens hood by the base (near the lens hood attachment index) and turn clockwise, as viewed when holding the camera with the lens facing away from you, to detach.

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