What is ttl – Kodak DCS500 User Manual

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Expos

ure

What is TTL?

TTL (Through-The-Lens) is the standard flash exposure control mode for Speedlites
480EG, 200E, 160E and Macro Ring Lite ML-3 when used with the DCS 500 Series
camera. Additionally, TTL is available with Speedlite 540EZ in all camera exposure
modes except for direct flash in Program mode, as shown in the following table. TTL is
identical to A-TTL in almost every way, except there is no preflash. When the camera is
set to Program mode, TTL flash sets an aperture based on a program line that responds to
the ambient light level.

The availability of A-TTL or TTL depends on the user’s choice of Speedlite, camera
exposure mode, and whether or not the Speedlite is set for direct flash as follows:

Availability of A-TTL and TTL according to Speedlite with DCS 500 Series camera

*Indicates discontinued product as of 1/98.
**When using Speedlite 300TL, set the Flash Mode button to a position other than MHi or
MLo for TTL automatic flash exposure.

Camera Exposure Mode -->
Speedlite Flash Mode

Program

Shutter-
priority

Aperture-
priority

Manual

540EZ

Direct Flash

A-TTL

TTL

Bounce Flash

TTL

430EZ*

Direct Flash

A-TTL

TTL

Bounce Flash

A-TTL

TTL

420EZ*

Direct Flash

A-TTL

TTL

Bounce Flash

A-TTL

TTL

300EZ*

Direct Flash

A-TTL

TTL

480EG

Direct Flash

TTL

Bounce Flash

TTL

200E

Direct Flash

TTL

160E*

Direct Flash

TTL

ML-3

Direct Flash

TTL

300TL**

Direct Flash

TTL

Bounce Flash

TTL