[nikomat 22050] Disabling F3 1/80th sec until Frame 1

[Shin SUGIYAMA <ssugiya@biol1.bio.nagoya-u.ac.jp>]

すぎやま＠ NikonRepair@yahoogroups.comからの引用です。

F3で1コマ目までの1/80秒設定を解除するための改造方法が紹介されていました。

You are correct, disconnect the small black wire at
the rear of the counter assy

> Here is a note from a recent disassembly/re-assembly
> of a Nikon F3 body:
>
> I noticed while studying the film counter mechanism,
> that there is an electrical contact on the nylon
> gear
> that turns the frame counter.  This circuit is
> closed
> until the frame reacheds frame 1 (then it is open).
> To me, this is very obvious that it is how the
> camera
> knows when frame 1 is acheived, freeing up the meter
> to work, rather than 1/80th sec until frame 1 is
> acheived.  I didn't disable it, as it wasn't my
> camera, but I believe this could be an easy way to
> disable Nikon's annoying F3 feature of only offering
> 1/80th sec until frame 1.  That way, we can squeeze
> in
> an extra frame.
>
> I'll confirm this someday, if I ever need to crack
> open my own F3.