Nikon D800E User Manual page 400

When used with the AF-S 14–24mm f/2.8G ED, the flash will be
NIKKOR
unable to light the entire subject at all ranges.
The built-in flash can also be used with AI-S, AI-, AI-modified NIKKOR,
Nikon Series E and non-CPU lenses with a focal length of 24–300mm. AI
50–300mm f/4.5, modified AI 50–300mm f/4.5, and AI-S 50–300mm f/4.5
ED lenses must be used at a zoom position of 180mm or above, and AI
50–300mm f/4.5 ED lenses at a zoom position of 135mm or above.
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