Canon EOS 1300D - Manual (Page 273)

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External Speedlites
 With an EZ/E/EG/ML/TL-series Speedlite set in TTL or A-TTL
autoflash mode, the flash will be fired at full output only.

Set the camera’s shooting mode to (manual exposure) or
(aperture-priority AE) and adjust the aperture setting before
shooting.
 When using a Speedlite that has manual flash mode, shoot in the
manual flash mode.
Sync Speed
The camera can synchronize with compact, non-Canon flash units at 
1/200 sec. or slower shutter speeds. Use a sync speed slower than 
1/200 sec.
Be sure to test the flash unit beforehand to make sure it synchronizes
properly with the camera.
Canon Speedlites Other Than the EX-series
Using Non-Canon Flash Units
 If the camera is used with a flash unit or flash accessory dedicated to
another camera brand, the camera may not operate properly and
malfunction may result.
 Do not attach a high-voltage flash unit on the camera’s hot shoe. It may
not fire.