Background
The concept for cameras with live preview largely derives from electronic (video) TV cameras. Until 1995 most digital cameras did not have live preview, and it was more than ten years after this that the higher end digital single-lens reflex cameras (DSLR) adopted this feature, as it is fundamentally incompatible with the swinging-mirror single-lens reflex mechanism.
The first digital still cameras with an LCD and live preview were the Casio QV-10 and Ricoh RDC-1 in 1995. The first prosumer camera to use live view for both exposure control and preview framing was the fixed-lens Canon PowerShot G1 from 2000, although this was still in the line of compact cameras.
The first DSLR to use live view for framing preview only was the fixed-lens Olympus E-10 from 2000. The first interchangeable-lens DSLR to use a live preview was the Fujifilm FinePix S3 Pro, which was launched in October 2004. Its "Live Image" mode could display a live, black-and-white preview of the subject that could be magnified for manual focusing purposes, although the preview was limited to a duration of thirty seconds. It was followed in early 2005 by the Canon EOS 20Da, a special version of the Canon EOS 20D with modifications for astrophotography, which included a similar focus preview feature. The first general-use interchangeable-lens DSLR with live view for framing preview only was the Olympus E-330 of 2006. The first general-use interchangeable-lens DSLRs with live view for both exposure simulated preview and framing preview were the Canon EOS 1Ds Mark III and Canon EOS 40D of 2007.
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