Flash for balancing the outdoor and indoor light
		Shot at Aperture priority, evaluative metering has left the main subject undeexposed.
			Camera Model    Canon EOS 5D  Shooting Date/Time    12/03/08 01:21:01  Shooting Mode    Aperture-Priority AE  Tv( Shutter Speed )    1/800  Av( Aperture Value )    4.0  Metering Mode    Evaluative Metering  Exposure Compensation    0  ISO Speed    200  Lens    EF24-105mm f/4L IS USM  Focal Length    24.0 mm Image Size    4368x2912  Image Quality    RAW  Flash    Off  White Balance Mode    Daylight  AF Mode    One-Shot AF
		The flash 580exII was added to canon 5d resulting in corect exposure for the subject but overexposure for the outside daylight. Canon 5d has only two options with flash, a fixed shutter speed of 1/200th sec or slow synchronisation. one does not have the option of choosing 1/60th sec with flash on aperture priority mode.
			Camera Model    Canon EOS 5D  Shooting Date/Time    12/03/08 01:21:27  Shooting Mode    Aperture-Priority AE  Tv( Shutter Speed )    1/200  Av( Aperture Value )    4.0  Metering Mode    Evaluative Metering  Exposure Compensation    0  ISO Speed    200  Lens    EF24-105mm f/4L IS USM  Focal Length    24.0 mm Image Size    4368x2912  Image Quality    RAW  Flash    On  Flash Exposure Compensation    0  White Balance Mode    Daylight
		choosing a higher shutter speed, which is not possible along with a flash would have balanced the outside and inside exposure.
			Camera Model    Canon EOS 5D  Shooting Date/Time    12/03/08 01:22:16  Shooting Mode    Aperture-Priority AE  Tv( Shutter Speed )    1/200  Av( Aperture Value )    4.0  Metering Mode    Evaluative Metering  Exposure Compensation    0  ISO Speed    200  Lens    EF24-105mm f/4L IS USM  Focal Length    24.0 mm Image Size    4368x2912  Image Quality    RAW  Flash    On  Flash Exposure Compensation    0  White Balance Mode    Daylight
		The shooting mode has been switched over to shutter priority and 1/60th is the selected shutter speed.(below picture)
			Camera Model    Canon EOS 5D  Shooting Date/Time    12/03/08 01:23:02  Shooting Mode    Shutter-Priority AE  Tv( Shutter Speed )    1/160  Av( Aperture Value )    10.0  Metering Mode    Evaluative Metering  Exposure Compensation    0  ISO Speed    200  Lens    EF24-105mm f/4L IS USM  Focal Length    24.0 mm Image Size    4368x2912  Image Quality    RAW  Flash    On  Flash Exposure Compensation    0  White Balance Mode    Daylight
		Canon 5d mark II has the option of selecting shutter speeds between 60-200 with flash at aperture priority. Almost all the Nikon cameras have this flexibility.
			Camera Model    Canon EOS 5D  Shooting Date/Time    12/03/08 01:23:58  Shooting Mode    Shutter-Priority AE  Tv( Shutter Speed )    1/160  Av( Aperture Value )    10.0  Metering Mode    Evaluative Metering  Exposure Compensation    0  ISO Speed    200  Lens    EF24-105mm f/4L IS USM  Focal Length    24.0 mm Image Size    4368x2912  Image Quality    RAW  Flash    On  Flash Exposure Compensation    0  White Balance Mode    Daylight

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