None. I’ve been trying to complete the rolls I start lately and not leave partial rolls in the cameras.
It’s been working well on several levels; It keeps my negatives a little easier to sort when the subject matter is more consistent, it makes negatives easier to scan or print when an entire roll is exposed under similar conditions and, best of all, it encourages me to shoot more which is never a bad thing.
1 Canon New F1 loaded with Fuji Provia 400X
1 Canon New F1--------------------Fuji Provia 100
1 Canon F1n -------------------------Agfa Precise 100
1 Canon F1n--------------------------kodak Portra 400
1 Canon E F---------------------------Ilford HP 5 Plus
Nikon F6, loaded with E100G; Nikon F5, loaded with Tri-X, Nikon F3HP, loaded with HP5+, Nikon F2AS, loaded with HP5+; four Hasselblad A-12 backs, loaded with PanF+; two Hasselblad A-12 backs loaded with E100G.
Just my Olympus Trip loaded with XP2 at the moment. Unless the weather radically improves in the next few days, I'm going to be spending a lot more time looking at pictures than taking them this week!
All loaded with something black and white, either Tri-X or TMAX 400. It's been a while since I've shot with them though, and as we've entered the messy season it isn't really the optimal time of year for shooting old film cameras with no weather sealing. So I either shoot with the EOS 1V or I shoot something else.
When I saw this a week ago I didn't respond as I never leave fim in my cameras. Right. Two days ago I was organizing my gear and found two cameras loaded!
1. 2x3 Graflex Crown RH8 loaded with Arista EDU 120. Loaded in spring of 2016.
2. Pentax Auto 110 loaded with Kodak Gold 400 24exp. Loaded around 2015.
I went out and shot them both up. I developed the 120 and sent the 110 to Dwayne's. Now the answer is ZERO. For sure.