On a clear day this would definitely help however where I live in the UK there is frequent cloud cover. As the sun passes in and out of the clouds the light lev

On a clear day this would definitely help however where I live in the UK there is frequent cloud cover. As the sun passes in and out of the clouds the light levels end up changing a surprising amount, causing frequent exposure flashes on the camera which essentially voids the calibration. In trying to achieve very high sensitivity I could not really make any kind of rolling calibration work sadly