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Digital TTL Auto Flash mode introduced with the SB-28DX Speedlight Flashgun in 1999. Available on the SB-50DX and SB-80DX as well. This was introduced by Nikon together with their DSLR cameras that started shipping out of the factories in Japan, namely the D1, D1H, D1X and the D100.

D-TTL was the answer back then to solve the issue with no longer having a reflective film plane to measure light being bounced off for exposure calculation, as is done with TTL. Instead D-TTL uses one of the shutter blades in front of the cameras sensor to measure the light being bounced back.

Suffice to say, D-TTL did not work that great and was replaced by the excellent i-TTL system.

Nikonians Photo Glossary

  • This page was last modified on 23 January 2021, at 10:05.
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