CUSTOM 11 - FLASH METERING

The metering mode for both the built-in and accessory flash can be specified:

1ADI Flash Metering. When the flash fires, ADI or pre-flash TTL metering will be employed. Flash metering changes according to the flash unit and lens being used, see below.

ADI (Advanced Distance Integration) metering uses the distance information from D series lenses in addition to TTL metering during the exposure. With the 5600HS (D), 3600HS (D), and 2500 (D) accessory flash units, a pre-flash is also used. With ADI metering, the exposure system is less influenced by background conditions or the subject’s reflectance. Pre-flash TTL uses a pre-flash to determine the reflectance of the scene as well as controlling the flash output during the exposure.

2TTL (Through The Lens) Flash Metering. The TTL flash metering system controls the flash during the exposure automatically. No pre-flash is used. To use flash or color meters, or neutral density filters, the flash mode must be set to TTL metering.

Flash

D series lens

Other lenses

Camera flash

ADI

TTL

Program/Maxxum

 

 

5600HS (D)*

ADI

Pre-flash TTL

3600HS (D)*

(with pre-flash)

 

2500 (D)

 

 

Program/Maxxum

Pre-flash TTL

Pre-flash TTL

5400HS*

 

 

Other flash units

TTL

TTL

*HSS (High Speed Sync.) must be active. If off, TTL metering is used.

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