ONLYOLY BW wrote:
>
> In a message dated 98-04-17 17:13:24 EDT, you write:
>
> << I noticed that the number of contact points on the bottom plate
> of the OM cameras are different -- some camera models have two
> contact points while others have three. Can someone tell me
> where I can find out what these contacts are for and how all the
> OM cameras can accept the same winder/MD but still have different
> number of contact points. Thanks.
> -Dan >>
> Snip!
> Hi Dan,
> The OM3, OM4T and OM3Ti all have 5 contacts, while the OM1 &2 have 2 contacts.
> One reason is so the newer bodies can use the Film Rewind feature of the Motor
> Drive 2. The Motor drive 1 nor the winders have this capability. The OM1 & 2
> can use the motor drive 2 but cannot use the rewind feature. I am not sure if
> there are other reasons.
> BW
The OM 2SP and OM 40 (PC) have three contacts (I guess OM 20/G and OM
30/F too) for automatic wind to picture 1 after closing the back.
Richard
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