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A Lens f-number
The f-number given in lens names is the maximum aperture of the
lens.
A Compatible Non-CPU Lenses
Non-CPU lens data (0 229) can be used to enable many of the
features available with CPU lenses, including color matrix metering; if
no data are provided, center-weighted metering will be used in place
of color matrix metering, while if the maximum aperture is not
provided, the camera aperture display will show the number of stops
from maximum aperture and the actual aperture value must be read
off the lens aperture ring.
D Incompatible Accessories and Non-CPU Lenses
The following can
NOT be used with the D810:
• TC-16A AF teleconverter
• Non-AI lenses
• Lenses that require the AU-1 focusing unit
(400mm f/4.5, 600mm f/5.6, 800mm f/8,
1200mm f/11)
• Fisheye (6mm f/5.6, 7.5mm f/5.6, 8mm
f/8, OP 10mm f/5.6)
• 2.1cm f/4
• Extension Ring K2
• 180–600mm f/8 ED (serial numbers
174041–174180)
• 360–1200mm f/11 ED (serial numbers
174031–174127)
• 200–600mm f/9.5 (serial numbers
280001–300490)
• AF lenses for the F3AF (AF 80mm
f/2.8, AF 200mm f/3.5 ED,
AF Teleconverter TC-16)
• PC 28mm f/4 (serial number 180900 or
earlier)
• PC 35mm f/2.8 (serial numbers 851001–
906200)
• PC 35mm f/3.5 (old type)
• Reflex 1000mm f/6.3 (old type)
• Reflex 1000mm f/11 (serial numbers
142361–143000)
• Reflex 2000mm f/11 (serial numbers
200111–200310)