Makes it a miracle that the Pentax and other DSLRs can take 24 - 30
fps movies then, doesn't it? Yet how quietly the shutter operates at
that speed.
On May 12, 2010, at 10:20 , David Parsons wrote:
Mirror, shutter, and aperture control are not mechanically linked in
modern dSLRs. They are separately actuated using servos.
They are most likely setup that way because the timing chain is
already setup and it's much easier to tell the camera to actuate 3
times, than to reprogram the timing chain to lift the mirror, close
the aperture, and open-close the shutter x times.
On Wed, May 12, 2010 at 12:13 PM, Godfrey DiGiorgi <gdigio...@gmail.com
> wrote:
Of course it needs to operate the shutter ... all electronic shutters
as yet do not have the control and resolution possible with a
mechanical shutter. And like with most SLRs, the shutter regulation,
aperture control and mirror are a linked mechanical operation so
there's no good way to cycle the shutter without also cycling the
others.
On Olympus bodies, the auto-bracket feature and the "capture three on
one shutter press" are implemented separately: you have to turn on
auto-bracket AND drive mode to achieve this automation. I find this
very useful in some situations (say when using a flash unit to allow
time for recycling).
If a camera has independently, electronically controlled shutter,
mirror and aperture operation, then an option to do auto-bracketing
on
one press cycling only the shutter as quickly as possible would be a
nice feature for use when appropriate. I don't believe it's possible
with the design of today's Pentax (or any other) SLR bodies.
On Wed, May 12, 2010 at 8:10 AM, Larry Colen <l...@red4est.com> wrote:
On Monday night I was photographing a dance and was having a
really rough
time with exposure. I was shooting in manual mode, I'd take a
picture, then
the next time I shot, the exposure was way off. Or it would
change. It
took me a while to realize that I had left the shutter in "bracket".
Joseph McAllister
pentax...@mac.com
http://gallery.me.com/jomac
http://web.me.com/jomac/show.me/Blog/Blog.html
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