underwater Photo Course :: (4) Light Underwater :: Exposure :: Light Metering Underwater :: Metering Limitations

The introduction of built TTLThrough The Lens. A term applied to viewfinders and metering systems that operate behind the lens. As such TTL is accurate because it sees what the lens sees. meters in underwater cameras paved the way for a revolution in underwater photography. However, TTL encouraged an unhealthy reliance on technology by giving us a false sense of security in the belief that this was the best, and only, way to do things. Nevertheless, it was a great improvement because, with a little common sense about where you pointed it to take a reading, it was accurate and fast to implement. TTL systems also had the advantage of automatically compensating for any transmission losses through

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