This image was taken with an old wooden camera that I found in an antique shop in Edinburgh. I decided recently to see how it performed, and so loaded it with a sheet of BW printing paper. The paper, at approximately ISO3 (yes, three), is probably similar in speed to the glass plates that would have been in use at the time (around 1870s); the exposure here was 45 seconds at about f/14 (double that would have been better). The focal length of the lens is around 145mm, and the focusing adjustment was extended to its maximum, which was presumably the setting for a group portrait.
