In article <32B004BE.4151@dl.ac.uk>, h.owen@dl.ac.uk says...
>Bjorn Jorde wrote:
>> John Sindelar wrote:
>> > certain carmera (Nikon F3s I believe) can be had with 100% accurate
>> > screens so I can be VERY sure of my compositions when photographing
>> > artwork.

>> All Nikon F series cameras has 100% view finders.

>Um, no actually! Only the top ones have 100% viewfinders, F3, F4, F5.
>The others, e.g. F50, F70, F90 have 92% area viewfinders - this
>corresponds to 2% of the length along each axis being lost on each edge
>of the frame.

Um, he DID specify "F" series...., as in F, F2, F3, F4, F5...;-)
(In the US, the others are "N", or multiple lettered, like FE, etc...)
BTW, the MOST useful feature of the F-series finders relative to
others for accurate framing may be the lack of the pincushion linear
distortion that is present in virtually all other finders these days.
With the F-series Nikons, a line placed parallel with the edge of the
frame (that is rendered straight by the lens) will appear straight and
parallel in an F finder (and if it doesn't, it is possible for the user
to adjust the frame placement and rotation in the F-series bodies
[though it is not easy to get it right...]). (With apologies to non-US,
non-"N"-body-designating folks...;-)

Hope This Helps