Wetpixel Live: TTL or Manual
In general, underwater photographers have two options when it comes to controlling the output of their strobes to obtain a pleasing exposure. The first of these, TTL, uses an electronic process that meters and then automatically provides the correct amount of light, while the second relies on the photographer adjusting the strobes’ output manually. Alex Mustard and Adam Hanlon give their personal perspectives on which is the best option to chose.