Re: digital backs (was Re: Leica R9/R8 digital back.)

[Caveman]

T Rittenhouse wrote:
U? I must be missing something here. Why not just record when light hits
the sensor, I mean you do have a shutter. What more do you need?
You don't want to read the sensor in the middle of an exposure, do you ?

cheers,
caveman

Re: digital backs (was Re: Leica R9/R8 digital back.)

[T Rittenhouse]

U? I must be missing something here. Why not just record when light hits
the sensor, I mean you do have a shutter. What more do you need?

Ciao,
Graywolf
http://pages.prodigy.net/graywolfphoto


- Original Message -
From: "Caveman" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, June 25, 2003 10:20 PM
Subject: Re: digital backs (was Re: Leica R9/R8 digital back.)


> Anthony Farr wrote:
> > Interesting.  Do you know how the backs are controlled?  My guess would
be
> > that either they use X-synch from the lens to signal the back when
capture
> > should commence, or they totally bypass the shutter system of the camera
and
> > use their own 'virtual' shutter.
>
> Supposing there's no signal from the camera available. And since it's
> not a full frame sensor. You have the physical place for an additional
> optical sensor that could detect when the shutter starts moving.
>
> cheers,
> caveman
>

Re: digital backs (was Re: Leica R9/R8 digital back.)

[Juey Chong Ong]

On Wednesday, June 25, 2003, at 10:06 PM, Anthony Farr wrote:

Interesting.  Do you know how the backs are controlled?  My guess 
would be
that either they use X-synch from the lens to signal the back when 
capture
should commence, or they totally bypass the shutter system of the 
camera and
use their own 'virtual' shutter.
IIRC, in the case of the Hassy, they use the X-sync. If the camera has 
a motor drive port, some of them also hook up to the motor drive so 
that you can fire the shutter from the computer.

I just looked at my PhaseOne compatibility chart and --- surprise! --- 
Pentax 35mm lenses are on the recommended list! Doesn't say which ones, 
though

--jc

Re: digital backs (was Re: Leica R9/R8 digital back.)

[Caveman]

Anthony Farr wrote:
Interesting.  Do you know how the backs are controlled?  My guess would be
that either they use X-synch from the lens to signal the back when capture
should commence, or they totally bypass the shutter system of the camera and
use their own 'virtual' shutter.
Supposing there's no signal from the camera available. And since it's 
not a full frame sensor. You have the physical place for an additional 
optical sensor that could detect when the shutter starts moving.

cheers,
caveman

Re: digital backs (was Re: Leica R9/R8 digital back.)

[Anthony Farr]

Interesting.  Do you know how the backs are controlled?  My guess would be
that either they use X-synch from the lens to signal the back when capture
should commence, or they totally bypass the shutter system of the camera and
use their own 'virtual' shutter.

regards,
Anthony Farr

- Original Message - 
From: "mishka" <[EMAIL PROTECTED]>

> apparently not true. kodak has one-shot backs for hassies 500* and swc. as
far as i can tell,
> there's no digital interface on the back of 500c.
>
> mishka
>

digital backs (was Re: Leica R9/R8 digital back.)

[mishka]

apparently not true. kodak has one-shot backs for hassies 500* and swc. as far as i 
can tell,
there's no digital interface on the back of 500c.
mishka

From: "Anthony Farr" <[EMAIL PROTECTED]>
Subject: Re: Leica R9/R8 digital back.
It's the medium format way of doing things but, excepting the earlier
multiscan backs, an electronic interface to control the digi back needs to
be built into the camera body.  Leica R8/R9s evidently have the required
interface.  A full time DSLR doesn't need that interface because its digital
imager is integral to the camera.  If it was feasible to have an
instantaneous shot style of digi back that could link up to a camera with no
interface, DigitalFilm would have appeared years ago instead of languishing
in vapourware limbo.
regards,
Anthony Farr