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Showing posts from September, 2008

Photography - Close Up Macro Lenses

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Close-up filters (also known as macro filters) are a filter that screws onto the end of your cameras lens. The main purpose of the close-up filter is to decrease the minimum distance required for the lens to focus. Take the telephoto lens for example. This lens would normally require you to be at least 1.5m from the subject being photographed before the subject will properly focus, but attaching a close-up filter to the lens will let you stand much closer to the subject. Filters can be used together (stacked) or used separately but always remember that if stacking your filters, that the strongest filter (+10 or the highest number filter) is closest to the lens. Close-up filters are measured i

Canon 50D

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Canon EOS 50D Digital SLR Camera (15.1MP, 3" LCD, ISO 12800) (Canon Malaysia) With the same rugged, conservative body as the 40D, the Canon EOS 50D's only distinguishing mark is the silver bezel on its mode dial, and there are a few minor changes to how the buttons and controllers are used, but for the most part the 50D's body is unchanged. The Canon EOS 50D body is a magnesium alloy, with slightly improved seal against dust and water. Canon EOS 50D specifications Sensor • 22.3 x 14.9 mm CMOS sensor • RGB Color Filter Array • Built-in fixed low-pass filter (with self-cleaning unit) • 15.5 million total pixels • 15.1 million effective pixels • 3:2 aspect ratio Image processor DIGIC 4 A/D conversion 14 bit