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Technical Notes—Optional Accessories
Incompatible Accessories and Non-CPU Lenses
The following accessories and non-CPU lenses can NOT be used with the D50:
•TC-16A AF Teleconverter
•Non-AI lenses
•Lenses that require the AU-1 focus-
ing unit (400 mm f/4.5, 600 mm f/5.6,
800 mm f/8, 1200 mm f/11)
•Fisheye (6 mm f/5.6, 8 mm f/8, OP
10 mm f/5.6)
•21 mm f/4 (old type)
•K2 rings
•ED 180–600 mm f/8 (serial numbers
174041–174180)
•ED 360–1200 mm f/11 (serial numbers
174031–174127)
•200–600 mm f/9.5 (serial numbers
280001–300490)
•Lenses for the F3AF (80 mm f/2.8,
200 mm f/3.5, TC-16 Teleconverter)
•PC 28 mm f/4 (serial number 180900 or
earlier)
•PC 35 mm f/2.8 (serial numbers
851991–906200)
•PC 35 mm f/3.5 (old type)
•1000 mm f/6.3 Refl ex (old type)
•1000 mm f/11 Refl ex (serial numbers
142361–143000)
•2000 mm f/11 Refl ex (serial numbers
200111–200310)
Compatible Non-CPU Lenses
Non-CPU lenses not included in the list above can be used, but only in mode M.
Aperture must be adjusted manually using the lens aperture ring and the camera
exposure meter and TTL fl ash control can not be used. If another mode is selected
when a non-CPU lens is attached, the shutter-release will be disabled.
AF-Assist Illumination
The following lenses may block the AF-assist illuminator at ranges under 1 m (3´3˝).
Note that the camera may not be able to focus using autofocus if the AF-assist il-
luminator is blocked.
•AF Micro ED 200 mm f/4D
•AF-S ED 17–35 mm f/2.8D
•AF ED 18–35 mm f/3.5–4.5D
•AF 20–35 mm f/2.8D
•AF-S ED 28–70 mm f/2.8D
•AF ED 24–85 mm f/2.8–4D
•AF-S VR ED 24–120 mm f/3.5–5.6G
•AF 24–120 mm f/3.5–5.6D
•AF Micro ED 70–180 mm f/4.5–5.6D
•AF-S DX IF ED 17–55 mm f/2.8G
AF assist is not available with the following lenses:
•AF-S VR ED 70–200 mm f/2.8G
•AF ED 80–200 mm f/2.8D
•AF-S VR ED 200–400 mm f/4G
•AF-S VR 300 mm f/2.8G
•AF-S ED 80–200 mm f/2.8D
•AF VR ED 80–400 mm f/4.5–5.6D
•AF-S VR 200 mm f/2G