Epson Expression 836XL

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What is the AutoFocus system?
Most scanners use a fixed focal system where the lens and the CCD are set to focus at one specific point. The EPSON Expression 836XL uses a unique variable focus lens where through its AutoFocus optics system, the user has control to focus automatically the entire preview area, a specific critical area, or manually focus using before and after preview windows. The focus point can be set as high as 6mm above the glass of the scanner, or -3mm which creates a "defocused" look to an image. Transparency holders included with the optional transparency unit hold the film 2.5mm above the glass. This system is ideal for scanning 35mm slides, negatives and 3D objects to obtain critical sharpness especially important for enlargements.

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