Yep, Ercona. Pinhole is .0102" or .259mm, which works optimally with a 48.05mm focal lenght. I think my focal length is right around 45mm. I went over rather than under as I found that error works better from the wrestling I did with the 4x5. Gives you an exposure time of f16x139 - or in my case, I just carry S. Liu around with me

(Sam has an amazing ability to predict aperture and shutter settings without any meter. Not many people know this but he shoots everything without a meter. No lie.) Most of the shots were between 15 sec and 30 sec exposures on TriX400 in late evening light. The pinholes were made by Christiansen Gallery Minute Aperture Imaging, 7586 County H, Maplewood, WI 54226, 920-856-6842,
pinhole@doorpi.net. I bought them as a set of 12, ranging from 16mm to 472mm focal length. About $40 at Calumet.
Here are a few shots of the camera:
Novarless
Lots of fun, I must admit.
J Ake :twisted: