I posted a thread about it a few days ago. It’s a manually rotated slitscan panoramic camera. Made by the now-defunct Horsely Camera Works who made a small number of such cameras. So the camera rotates around a central point. As it rotates it pulls film across the slit in direct relationship…
…to the rotation, forming an image that continues as long as the camera is rotated. Can keep shooting past 360 and just go around again. But apparent shutter speed is a combination of the width of the slit and the speed of rotation. 180 degrees in 2 seconds = ~1/25. The results are…
…to me, surprisingly good for being an extremely simple machine: www.flickr.com/gp/dentedach...

Horsley Green Mk2 tests
Horsley Green Mk2 tests

Explore this photo album by Chad Hill on Flickr!

Flickr
I really do think the remarkable thing about this camera is the ability to dynamically compose the width of each shot. Which is really not the case for most panoramic cameras in which you get the same shot width each time. So I find myself actively framing the start, end, and center points.
And now, of course, I have to fine to 67-72mm step up adapter I know I have, so I can try to #TrichromeEverything.