Promaster FTD 5700

Check availablity: eBay.

This is a modular flash that used to come with dedicated OTF TTL adaptors for various film cameras. These are all incompatible with digital cameras. There was also an adaptor “ST” that makes it a non-dedicated flash. This is the preferred adaptor to have if you want to use this flash on a digital camera.

The non-TTL auto setting is for three apertures f/2, f/4 and f/5.6, but this control is missing from the dedicated TTL adaptors along with a switch to set ISO.

If you have this flash with some dedicated TTL adaptor and you want to use the flash as a manual flash on a digital camera, the “extra” TTL-pins in the hot-foot may confuse the body and in worst case the flash will not fire. In that case, you may try to remove the “extra” TTL-pins from the adaptor hot-foot, leaving only the centre pin and edge connector.

Also sold as Quantaray QTB 5900A.

(Size and weight is without ataptor.)


Generic flash.
Head: 28, 35-80mm coverage, manual zoom.
Swivel & tilt: -180° to +150° swivel, 0° to +90° tilt.
Exposure modes: Auto, Varipower.
Manual settings: 1/1 and 1/16 (2 steps).
No built-in wireless modes.
Trigger voltage: < 6 volt.
Batteries: 4xAA.
Flash duration: 1/1000 sec. @ 1/1 (full output).
Field upgradable: No.
Dimensions: 81 x 157 x 52 mm, 313 g.

Zoom head setting:f=35mmf=50mmf=maxSubflash
Guidenumber (ISO 100, meter):313539yes
GNs taken from manufacturer's specifications.

Discontinued: Yes.

For a detailed explanation of the above specifications, see the guide.


No literature yet.

Brand profile

Key info

Established: 1958
HQ: Fairfield, CT, USA
Web: US, man

Promaster is the house brand of Photographic Research Organization, Inc. (PRO), a USA-based retail cooperative founded in 1958. It currently has 155 member firms and affiliates operating more than 400 stores throughout the USA. Promaster-branded products are mainly sold through members and affiliates.

Some models are also sold with the Promatic brand (with the same model number – Promaster 5700 and Promatic 5700 is the same product).

Please help us improve DPanswers

Do you think there is an error in this listing or do you have anything to add to these specifications? In particular, if no trigger voltage is listed (or you believe the trigger voltage indicated is wrong) and you own this flash and have measured the trigger voltage, please contact us with the additional or corrected data, or simply send us a message and tell us how we can improve the product database.

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