1/8th of a second with Rolleicord.
I'm not very good at slow speeds - 1/30 is about the best I can do on 35mm camera and 1/125(ish) on MF - I've got very shaky hands, and I'm only a youngster (mid 30's!) what's that all about?!?! ;)
I don't usually attempt to hand hold at shutter speeds at less than than 1/15 second, and then only rarely, usually 1/30 second is the slowest I attempt..
On my Mamiya 7 I'll go as low as 1/8th but on an SLR I won't go lower than 1/30 as the mirror slap gets me regardless of the steady hand.
On my Mamiya RZ67 I'll go to 1/60, I've gotten very good at that and people are shocked I can do it, but if you take your time and breathe properly, you can do it.,
Mamiya: 7 II, RZ67 Pro II / Canon: 1V, AE-1, 5DmkII / Kodak: No 1 Pocket Autographic, No 1A Pocket Autographic | Sent w/ iPhone using Tapatalk
1/30 is the slowest I go.
for shutter time, I do a 1/30 with my old pentax me super with 50 mm lens, without precautions and get lucky in half of the shots.
I just read about the contact prints, indeed that makes sense.