How to favour exposure time over ISO?
So let’s start the ball rolling. This is a question that has been asked in many different guises on the TLV FaceBook page.
Supposing we know what the final exposure should be for a night exposure (good old 500 rule) and we want to keep the ISO as low as possible, how do we config that?
In my experience I often end up with an exposure time lower than my target and an ISO that is higher. The overall exposure is often correct.