--- Mark Erickson <[EMAIL PROTECTED]> wrote:
>I took a look at the *ist-Ds manual, and it appears that if an
>older lens (i.e., not an FA, FAJ, D FA or DA) is mounted and
the
>built-in flash is used, the shutter speed is fixed at 1/180 and
>the flash always fires at full power (see page 147 of the
>manual). Yikes! Seems like a little bit of a limitation,
>doesn't it?
Not quite correct. An A manual focus lens works the same as an
FA/DA/D-FA/FA-J lens in P, Tv and M modes; in Av mode, shutter
speed is fixed at 1/180 second.
M and older K-bayonet lenses don't transmit aperture information
to the body, so you use them in Manual exposure mode and the
flash goes to a full power, set exposure by guide number manual
mode.
Dedicated external flash units support TTL as well as P-TTL
flash metering and thus allow metered flash with M and K lenses
too.
>Does the *ist-D have this limitation?
That I can't answer ... I don't have a D to experiment with.
Godfrey
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