Nikon D300 Complete Manual page 363

FUNC. button + dials button set to Choose non-CPU lens
number; see "FUNC Button Setting" on page <576>). For
example, consider these two lists:
1 28mm f/2
2 35mm f/1.4
3 105mm f/2.5
4 300mm f/4.5
5 400mm f/5.6
versus
1 300mm f/4.5
2 35mm f/1.4
3 105mm f/2.5
4 400mm f/5.6
5 28mm f/2
Which order do you think will make it faster to find the lens
that you've already set the data for?
Changing lenses follows the same steps as above, except that
you're removing the mounted lens in Step 2 instead of a body
cap (and you have to hold down the lens release button
during that step).
When no lens is mounted, you should always protect the
Note:
sensor from dust by using the BF-1A body cap (see
"Keeping the Sensor Clean" on page <692>).
Note: The body cap for the D300 (BF-1A) is different from the
one for earlier, manual focus 35mm film cameras (BF-1)
and much different from the cheap plastic cap that comes
with the N80 and some other Nikon bodies. Nikon states
that the older BF-1 body caps should not be used on the
D300. The older body caps (and some generic, third party
body caps) don't accommodate the electrical contacts built
into the autofocus lens mounts.
Thom Hogan's Complete Guide to the Nikon D300
V1.02
Page 363