Flash

Consumer Voice - - Digital Cameras -

Avail­able on al­most ev­ery dig­i­tal cam­era, a flash (or strobe) al­lows you to il­lu­mi­nate sub­jects by us­ing a short burst of light. Nearly all have auto-flash modes, a set­ting that will au­to­mat­i­cally fire a flash when­ever the cam­era senses there isn't enough il­lu­mi­na­tion for cor­rect ex­po­sure. Most in­clude other flash modes, in­clud­ing red-eye re­duc­tion mode, which min­i­mizes a com­mon flash cam­era prob­lem (al­though you can also fix this in an im­age-edit­ing pro­gramme when the im­age is stored on your com­puter). There are pri­mar­ily two types of flashes as­so­ci­ated with con­sumer-level cam­eras: a built-in (on­board or, in some cases, popup) strobe that is gen­er­ally po­si­tioned di­rectly or di­ag­o­nally above the lens. An ex­ter­nal strobe, sold sep­a­rately as an ac­ces­sory, fits into a cam­era's hot shoe, which lets you at­tach this ac­ces­sory on to an ad­vanced point-and-shoot. Many cam­eras in­clude a num­ber of flash modes that al­low you to al­ter the type of flash or the strength of the il­lu­mi­na­tion.

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