I bought a Canon 814 Auto Zoom in excellent condition, with all functions apparently working, on ebay in April 2019. In May I shot a test cartridge of Kodak Vision 3 200T at the Lickey Hills near Birmingham. The results were very disappointing, with what seems like random, frequent flashes of extreme overexposure throughout, except for a couple of short sequences shot at 36fps which have consistent exposure. The film was processed by Andec and scanned by Gauge Film. I've had no previous problems with any work done by either company, so I think the problem must be with the camera. I am hoping that those with much greater experience of this system and these cameras might be able to take a moment to look at the uploaded footage and offer me any suggestions they may have as to the likely cause of the problem.
You can find the footage here: https://www.youtube.com/watch?v=M0xmeKgPj9Y&feature=youtu.be
Thanks in advance to the incredibly knowledgeable contributors here!
Stephen