--- In PanoToolsNG@yahoogroups.com
, Pat Swovelin <Panoramas@...> wrote:
> [Shutter travel] was horizontal, from left-to-right, in their film
cameras but without
> being able to take the back off of my DSLR I don't know which way it
> travels now. It may very well be the same as in their film cameras
> reinvent the wheel?).
In the older SLR film cameras, the shutter curtains traveled
across the long dimension. Newer Canon cameras, including the
digital ones, have a sort of Venetian blind arrangement that
travels from top to bottom. I saw a thread on dpreview that
had a full description with pictures of how a 20D or 30D shutter
worked, but I can't find it now. The image is inverted at the
imager plane, so the direction of travel is from bottom to top
of the image (assuming landscape orientation).