Epson 1250 Technical Brief (Scanners) - Page 7

Image Quality-Dual Lens System A unique Dual Lens System, available on some Epson scanners, automatically selects from two lenses for the desired scan resolution. Dual Lens System offers two lenses for two different resolutions. High Resolution lens Some Epson Perfection scanners offers 4800 dpi optical resolution with the High Resolution lens. Document (8.5") Film Area Guide (8") High resolution lens Super Resolution lens For a higher resolution of 6400 dpi, the Super Resolution Lens can scan slides and film with the bundled film holders with a scanning width of 5.9 inches. Film Holder (5.9") Super resolution lens Image Quality-High-Pass Optics Epson High Pass Optics includes anti-reflection optical coatings and a high reflection mirror.  There is typically a small percentage of unwanted reflection with standard CCD glass which can cause abnormal ghost images. The anti-reflection optical coating on the CCD cover glass minimizes this reflection and reduces ghost images.  With a higher reflection rate, film scanning speed is faster. Ghost image Improved image quality Scanned with normal CCD glass Scanner Technical Brief-Page 7 Scanned with anti-reflection optical coating 6/07