Saturday, 27 August 2011

Week 1 Research

·         What shutter type is found in almost all small format DSLR cameras?
                The focal plane shutter.
·         What does the term Flash synchronisation speed mean?
This refers to the firing of a photographic flash coinciding with the shutter which admits light to photographic film or an electronic image sensor.
·         What is the flash synchronisation speed for you camera?
My camera being the Canon 60D, has a flash sync speed of 1/250 of a second.

·         What is the typical colour temperature (in Kelvins) of an electronic flash discharge?
The colour temp for electronic flash and vertical daylight is 5500-6000 K.

·         What is the typical flash discharge duration of a contemporary portable flash unit?
For the canon 580EXII speedlite, flash duration for normal flash is: 1.2ms or shorter, and quick flash is 2.3ms or shorter.

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