Lens with a shorter distance approach, in the case of the projector, a short-focus lens allows for projecting images of large size from a short distance. Projectors with quieter fans are desireable when using a projector in a smaller space ie. short-focus lens for big presentations in small quarters.

From a classroom lectern to the whiteboard, or from your desk to the office wall - you can now use the projector in confined spaces with a range of applications broader than ever before. Projectors like the Hitachi S225 and X275 can project an impressive 60-inch diagonal image from just five feet away from the screen. Short throw lenses are commonly used in environments like these:

• Small conference rooms
• Small classrooms
• Trade show booths
• Small home theaters

Some manufacturers include short throw lenses as a standard feature on specially designed projectors. Some projectors that ship with a short throw lens standard are:

• BenQ MP771
• Casio XJ-S37
• Casio XJ-S52
• Casio XJ-SC215
• Epson PowerLite 400W
• Hitachi CP-A100
• Panasonic PT-AE3000U

ultra-short lens allows users to attach it directly on the whiteboard. This reduces the creation of distracting shadows and silhouettes when presenters stand within the projection distance of a ceiling mounted projector. It is the ideal choice for users as its short focal distance provides more flexible placement options and this in turn maximizes efficient use of space.