Digital BW, The Print

Hi Robert,

> Even if you could get the clearance, I'm not sure it would work.  The
> impression that I got from Leaf was that there was a
> synchronization problem
> between the focal plan shutters and the backs.  They said that if they had
> made it work it would have only been usable at the flash sync shutter
> speed...which I think is 1/90 of a second with the FE lenses.

Correct.

> Its just incredible to me that someone can't make the top of the line
> Hasselblads work with a digital back.

There are some very critical issues with making this work.  One of them is
synchronizing the shutter with the digital back.  The other is getting the
sensor coplanar with the plane of focus...and with the IR/Anti-alias filter
holder being quite protruding, that is an issue as well...but one that I'm
surprised they did such a poor job at IMO.  These filters are very thin, and
certainly could be made mechanically workable.  I think they just designed
it for the shutterless cameras since that's really all they could make them
work with anyway.

The problem with the focal plane shutters is the shutter isn't open all at
one time!  It's a slit above a certain shutter speed (typically the sync
speed).  It's a big honking shutter to make move that fast without making it
a slit.  Central shutters don't have this issue.

Regards,

Austin