Unfortunately, a great many pictures were marred by light leaks on my Agat18k, which I've subsequently fixed (the bottom latch screw had come loose preventing it from closing completely)

HP5 in Canon V L1; Ektar100 on Pentax MX / Pentax-A 35-105mm f/3.5 and Mamiya Six Model V; Lomo800 in Agat18k