#5046638, By Jos very newbie question

  • Jos 29 Jul 2009 15:50:48 709 posts
    Seen 2 days ago
    Registered 13 years ago
    Massively simplifying;

    Compacts have small sensors, this means they use short focal lengths (hence the equivilent bit in the marketing - equivilent to the result given by a 35mm film camera). Also the f-numbers on your camera are equivilent too. So the aperture is smaller then you might realise.

    Short focal lengths and wide apertures give large depth of field.

    Therefore, harder to get blurry backgrounds on compacts.

    Other factors play a part but for compacts this is the biggy.

    See here or here - Depth of field section towards end.
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