Today, the lesson centred on some of the technical aspects of a digital SLR camera. We had briefly touched on Focal lengths in the previous week, and the differences between those quoted for a digital SLR camera than for a normal point and shoot type. For my camera I have to apply a factor of 1.5 to the film focal lengths being quoted.
We also went through the different settings that can be used when taking pictures (eg Automatic, manual, etc - always use P as a default as this operates like Automatic but gives you more control over such elements as the flash and white-balance).
When using the focuspoints screen, try and use the setting which utilises all focal pints at once as this will place more of the picture in focus.
White balance settings are to be used to adjust for colour under different types of light, (eg indoor, outdoor, fluorescent, tungsten, etc). The deafult setting is AWB (Automatic White Balance).
Picture Quality is based on the number of pixels used. JPEG and RAW have the same initial quality. RAW files are much bigger but enable far greater manipulation.
Metering settings are Evaluative (Matrix), Partial (Central) and Spot (Spot). Use Evaluative as the default. Exposure will be based on the whole scene.
ISO - has an Auto setting, reacts to sensitivity to light. A higher ISO is more sensitive to light but contains more noise (film grain). You should use a higher ISO if you do not wish to use a flash.
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