Canon 8090A004 EOS Rebel Ti manual - Page 49

Using the Built-in Flash In a Basic Zone Mode In a Basic Zone mode (except < >, < > and < >), the built-in flash will pop up and fire automatically in low-light or backlit conditions. In a Creative Zone Mode When using a Creative Zone mode, press the < > button to pop up the built-in flash. : Use this mode for automatic flash photography. The flash sync speed and flash aperture will be set automatically as with the < > (Full Auto) mode. : Use this mode if you want to set a flash sync speed slower than 1/90 sec. The camera will set the flash aperture automatically to obtain a correct flash exposure. : Use this mode if you want to set the flash aperture. In this mode, you can obtain a balanced exposure between the subject and a dark background (night scene, etc.) with a slow sync speed set automatically by the camera. The flash illuminates the subject while the background is exposed with a long shutter speed. : This mode enables you to set both the flash sync speed and flash aperture. The subject is properly exposed with the flash and the background is exposed with the flash sync speed and aperture you have set. : The result will be the same as using the < > mode. Flash Sync Speeds and Flash Apertures Mode Sync Speed The sync speed is set automatically to 1/90 sec. Flash Aperture The flash aperture is set automatically according to the TTL program. Any sync speed 1/90 sec. or slow- The flash aperture is set automatical- er can be set manually.* ly to match the sync speed you set. The sync speed is set automatically within a range of 30" to 1/90 sec. to match the flash aperture you set. Any sync speed 1/90 sec. or slower can be set manually.* You set the flash aperture manually. * If the sync speed is set faster than 1/90 sec., it will be reset automatically to 1/90 sec. 49