It is so frustrating to the point that because of the camera I have almost decided to sell all my Contax glass and stay with Nikon an Olympus... But here we go... A few months ago my Aria said that the film roll has reach the end and decided to rewind it in the mid of the roll! I tried changing rewind settings (manual rewind) - did not help, still after a few shots it said that I have to rewind the film. Then I checked the batteries and discovered that one battery was slightly damaged. I replaced batteries and thought that my problems are over. I happily shot 3-4 rolls with no issues and today again - 15th frame out of 24 and it starts rewinding. And it is even worse - LCD says it rewound to 0 when in fact it has not! Batteries are fresh. Have you ever experienced anything similar? UPDATE: I have replaced film and it is back to normal for another two rolls so far... Maybe just film winding was too stiff due to whatever reason (when pulling film from the cartridge for the development I noticed that it kinda stucks and needs a tad extra force to "unstuck" it... I can add that my second Contax (AX) also has a problem with “electronics” so maybe I am just unlucky with Contax cameras or it’s not the most reliable brand when it comes to SLR models (ok, my the167MT that I have sold was fine). I have a fine collection of Contax lenses but when I am not able to use them normally it is so frustrating... So here is what I am thinking (if I don’t find cost free solution to the current problem): - Option one: buy an expensive Contax S2 which is fully mechanical; - Use “cheap” bodies and don’t worry about reliability if it needs to be replaced (Yashica, Contax 139/159) - Sell fine Contax glass and stay with mechanical Nikon and Olympus that I have (and buy more Nikkors!). What would you do?