Nikon D5100 Reference Manual - Page 219

DAF-Assist Illumination ACalculating Angle of View - + af s dx 18 55 vr

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Lens AF-S VR Zoom-Nikkor 200-400mm f/4G IF-ED AF-S NIKKOR 200-400mm f/4G ED VR II PC-E NIKKOR 24mm f/3.5D ED * * When not shifted or tilted. Zoom position Minimum distance without vignetting 250 mm 2.5 m/8 ft. 2in. 350 mm 2.0 m/6 ft. 7 in. 200 mm 5.0 m/16 ft. 5 in. 250 mm 3.0 m/9 ft. 10 in. 300 mm 2.5 m/8 ft. 2 in. 350-400 mm No vignetting 24 mm 3.0 m/9 ft. 10 in. When used with the AF-S NIKKOR 14-24mm f/2.8G ED, the flash will be unable to light the entire subject at all ranges. D AF-Assist Illumination AF-assist illumination is not available with the following lenses: • AF-S NIKKOR 14-24mm f/2.8G ED • AF-S Zoom-Nikkor 80-200mm f/2.8D IF-ED • AF-S NIKKOR 28-300mm f/3.5-5.6G ED VR • AF-S VR Nikkor 200mm f/2G IF-ED • AF-S DX NIKKOR 55-300mm f/4.5-5.6G ED VR • AF-S NIKKOR 200mm f/2G ED VR II • AF-S VR Zoom-Nikkor 70-200mm f/2.8G IF-ED • AF-S VR Zoom-Nikkor 200-400mm f/4G IF-ED • AF-S NIKKOR 70-200mm f/2.8G ED VR II • AF-S NIKKOR 200-400mm f/4G ED VR II 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 NIKKOR 16-35mm f/4G ED VR • AF-S VR Zoom-Nikkor 24-120mm f/3.5-5.6G • AF-S Zoom-Nikkor 17-35mm f/2.8D IF-ED IF-ED • AF-S DX Zoom-Nikkor 17-55mm f/2.8G IF-ED • AF-S NIKKOR 24-120mm f/4G ED VR • AF-S DX NIKKOR 18-105mm f/3.5-5.6G ED VR • AF-S Zoom-Nikkor 28-70mm f/2.8D IF-ED • AF-S DX VR Zoom-Nikkor 18-200mm f/3.5-5.6G IF-ED • AF-S NIKKOR 35mm f/1.4G • AF-S DX NIKKOR 18-200mm f/3.5-5.6G ED VR II • AF-S NIKKOR 85mm f/1.4G • AF-S NIKKOR 24-70mm f/2.8G ED • AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED A Calculating Angle of View The size of the area exposed by a 35mm camera is 36 × 24 mm. The size of the area exposed by the D5100, in contrast, is about 23.6 × 15.6 mm, meaning that the angle of view of a 35mm camera is approximately 1.5 times that of the D5100. The approximate focal length of lenses for the D5100 in 35mm format can be calculated by multiplying the focal length of the lens by about 1.5. Picture size (35mm format) (36 × 24 mm) Lens Picture diagonal Picture size (D5100) (approximately 23.6 × 15.6 mm) Angle of view (35mm format) Angle of view (D5100) n 201

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201
n
Lens
Zoom position
Minimum distance without vignetting
AF-S VR Zoom-Nikkor 200–400mm f/4G IF-ED
250 mm
2.5 m / 8 ft. 2 in.
350 mm
2.0 m / 6 ft. 7 in.
AF-S NIKKOR 200–400mm f/4G ED VR II
200 mm
5.0 m / 16 ft. 5 in.
250 mm
3.0 m / 9 ft. 10 in.
300 mm
2.5 m / 8 ft. 2 in.
350–400 mm
No vignetting
PC-E NIKKOR 24mm f/3.5D ED
*
24 mm
3.0 m / 9 ft. 10 in.
*
When not shifted or tilted.
When used with the AF-S NIKKOR 14–24mm f/2.8G ED, the flash will be unable to light the
entire subject at all ranges.
D
AF-Assist Illumination
AF-assist illumination is not available with the following lenses:
•
AF-S NIKKOR 14–24mm f/2.8G ED
•
AF-S NIKKOR 28–300mm f/3.5–5.6G ED VR
•
AF-S DX NIKKOR 55–300mm f/4.5–5.6G ED VR
•
AF-S VR Zoom-Nikkor 70–200mm f/2.8G IF-ED
•
AF-S NIKKOR 70–200mm f/2.8G ED VR II
•
AF-S Zoom-Nikkor 80–200mm f/2.8D IF-ED
•
AF-S VR Nikkor 200mm f/2G IF-ED
•
AF-S NIKKOR 200mm f/2G ED VR II
•
AF-S VR Zoom-Nikkor 200–400mm f/4G IF-ED
•
AF-S NIKKOR 200–400mm f/4G ED VR II
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 NIKKOR 16–35mm f/4G ED VR
•
AF-S Zoom-Nikkor 17–35mm f/2.8D IF-ED
•
AF-S DX Zoom-Nikkor 17–55mm f/2.8G IF-ED
•
AF-S DX NIKKOR 18–105mm f/3.5–5.6G ED VR
•
AF-S DX VR Zoom-Nikkor 18–200mm f/3.5–5.6G IF-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 Zoom-Nikkor 24–120mm f/3.5–5.6G
IF-ED
•
AF-S NIKKOR 24–120mm f/4G ED VR
•
AF-S Zoom-Nikkor 28–70mm f/2.8D IF-ED
•
AF-S NIKKOR 35mm f/1.4G
•
AF-S NIKKOR 85mm f/1.4G
•
AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED
A
Calculating Angle of View
The size of the area exposed by a 35mm camera is 36 × 24 mm. The size of the area exposed by
the D5100, in contrast, is about 23.6 × 15.6 mm, meaning that the angle of view of a 35mm
camera is approximately 1.5 times that of the D5100. The approximate focal length of lenses for
the D5100 in 35mm format can be calculated by multiplying the focal length of the lens by
about 1.5.
Picture size (35mm format)
Lens
(36 × 24 mm)
Picture diagonal
Picture size (D5100)
(approximately 23.6 × 15.6 mm)
Angle of view (35mm format)
Angle of view (D5100)