Nikon D3000 Reference Manual

161

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D

AF-assist illumination is not available with the following lenses:
• AF-S NIKKOR 14–24mm f/2.8G ED
• AF-S VR 70–200mm f/2.8G ED
• AF-S NIKKOR 70–200mm f/2.8G ED VR II

• AF-S 80–200mm f/2.8D ED
• AF-S VR 200mm f/2G ED
• AF-S VR 200–400mm f/4G ED

At ranges under 1 m (3 ft. 3 in.), the following lenses may block the AF-assist illuminator and 
interfere with autofocus when lighting is poor: 
• AF-S 17–35mm f/2.8D ED
• AF-S DX 17–55mm f/2.8G ED
• AF-S DX NIKKOR 18–105mm f/3.5–5.6G ED VR
• AF-S DX VR 18–200mm f/3.5–5.6G ED
• AF-S DX NIKKOR 18–200mm f/3.5–5.6G ED VR II

• AF-S NIKKOR 24–70mm f/2.8G ED
• AF-S VR 24–120mm f/3.5–5.6G ED
• AF-S 28–70mm f/2.8D ED
• AF-S VR Micro 105mm f/2.8G ED

A

The size of the area exposed by a 35mm camera is 36 × 24 mm. The size of the area exposed 
by the D3000, in contrast, is 23.6 × 15.8 mm, meaning that the picture angle of a 35mm 
camera is approximately 1.5 times that of the D3000. The approximate focal length of lenses 
for the D3000 in 35mm format can be calculated by multiplying the focal length of the lens 
by about 1.5.