Shared virtually the same physical dimension and appearance Unfortunately Walter does not say WHY this calculation does not work for the early bodies - perhaps Nikon was making bodies faster in the early years of production.Nikon FE - Its Body and Basic Operation Part I (5000 is the number of F4 units produced per month according to a Nikon press release in 12/88).A simpler way of doing this computation is to take your F4 camera body's serial number, subtract 2,100,000from it, and divide the result by 60,000 (the approximate number of F4 bodies Nikon made each year), then add the result to 1989.Note: Walter says that this process of calculation does not work for F4 bodies for which the serial number starts with 22. This latter report is unsubstantiated, but there is good evidence that Nikon's production of the F4 ran into the 26xxxxx range.This means that Nikon manufactured over 500,000 F4 bodies during the run of this camera.One can 'roughly' estimate the production date of an F4 by subtracting 2100000 from the SN# and then dividing the result by 5000 which gives you the number of months since the introduction in September1988. Many people report havingor seeing F4 bodies with 2,600,000 serial numbers, and there is a report of someone having seen one with a27xxxxx on it. I just came across John Wall's excellent FAQ on the F4, which can now be found here:- From which the following about F4 serial numbers.Nikon F4 serial numbers started out at 2,100,000 in 9/88 and finished up at about 2,580,000 in early 1997.
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