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AlanC

UK
2700 posts

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"RE: sb-28dx and sb-28"

AlanC Basic Member
Mon 15-Apr-02 05:46 PM

I believe the difference is down to how the two flashes work when you're in TTL mode: the DX produces a pre-flash that's used to determine the exposure by monitoring light reflected from the shutter curtains immediately before the shutter opens and the main flash fires.

If you used a standard SB-28 I'd guess TTL mode simply wouldn't work since the flash can't emit the required pre-flash - but you should still be able to use A mode where exposure is determined by the sensor on the front of the flash.

You can't use the SU-4 with the SB-28DX in TTL mode since the pre-flash would trigger it, and the manual also says "TTL multiple flash operation using a sync or remote cord such as TTL Remote Cord SC-17 or TTL Multi-Flash Sync Cords SC-18 or SC-19 is not possible".

Alan.

A general, generic topic sb-28dx and sb-28 [View all] , guyb , Sun 14-Apr-02 06:08 PM
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