I already got my first roll from my Canonet QL17. I was able to use the Sunny 16 rule in shooting manually and I’ve got good exposures! In case you didn’t know the QL17 can be used manually at all shutter speeds and aperture. You only need the battery for the light meter to work. The battery is hard to find but you can buy a battery adapter from eBay or you can use the old foil trick. The only thing that I find difficult in this camera is focusing while on the move or in a car. I’m hoping for more adventures with this camera!