On Tue, 23 Feb 1999 21:24:59 -0800 RStephen Winter
([EMAIL PROTECTED]) wrote:
>Subject: Re: N70 and Aperture priority [v04.n262/11] [v04.n265/7]
>Message: 7
>
>>Subject: N70 and Aperture priority [v04.n262/11]
>>
>>Just want to make sure I'm doing this right...for the N70, to adjust
>>aperture priority, you have to set it to A, unlock the lens' aperture ring,
>>and rotate the aperture ring, correct? If so, I'm wondering why they did
>it
>>that way, as I must admit it was nice being able to easily adjust it on the
>>body of the Pentax ZX-50 the same way one adjusts the shutter speed.
>>
>>Ross
>
>You are correct. Why they did it that way I'm not sure, but its one of the
>reasons I bought the N70 instead of a "C" body. I came from a Yashica FR1
>that worked the apreature priority the same way. It seems to make sense to
>me to be able to move the aperature ring with one hand while the other hand
>is on the body and depressing the shutter release to activate the meter and
>focus. I can also hit the AE lock with the other hand.
>
>
The reason they do it that way is fairly simple, and it is the reason Nikon
lenses have never become obsolete. If you rely on the mechanical linkage
to transmit aperture information to the camera body, you do not need a lens
with a CPU (i.e. an AF lens). Thus an old AI lens will work on an N70 in
aperture-preferred auto-exposure mode. But it will not work on an N5005 in
that manner, as the N5005 relies on the lens's CPU to transmit aperture
information. To my mind, this is also the reason the N5005 isn't worth
"the powder it would take to blow it up."
