----- Original Message ----- 
From: "Kostas Kavoussanakis"
Subject: Re: The JCO survey


> On Wed, 18 Oct 2006, William Robb wrote:
>
>> Truthfully, it's like asking Pentax to put an aperture cam follower 
>> onto
>> a DSLR. The big difference between Canon and Pentax regarding this is
>> that it's recent history with Pentax.
>
> I cannot see how an aperture cam removal is the same as a register
> change. To me that's the major difference, not how recently it
> happened. We have discussed economics, so let's not go into the the $5
> times 35 gazilion years argument.

They are both changes to the mount, done for purely economic reasons.
Had Canon so desired, they could have left the register distance alone, 
and it should have allowed adapting FD lenses to EOS cameras, though the 
lenses themselves may have needed modification.
It's a pretty simple concept to get ones head around.

William Robb





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