An auto setup function searches for an input signal and performskeystone correction once the projector is put in place and turned on,simplifying setup.Easy setupr use in a variety of settingsThis mode lets you use a blackboard as a projection screen *4. It adjuststhe colors to make images look similar to those projection to an ordinarywhite screen.Blackboard/color board mode*4 The colors of images projected onto a blackboard or color board may vary from those of the original input signal.A 1/2x to 16x digital zoom function complements 1.2x optical zoom,increasing the flexibility with which the PLC-XC55/XC50 can be positionedfor use.1.2x zoom lensThe PLC-XC55/XC50 provides industry-standard digital interface supportwith a DVI-I input jack and D-Sub 15-pin input and output jacks.Extensive selection of input jacksAn easy-off function enables the projector to be unplugged immediatelywithout waiting for the lamp to cool down.Power off and go7 W speakerClosed caption (NTSC)Silence Design 27.5dBA (eco mode)Automatic digital correction of keystone distortion caused by the relativeposition of the projector and the screen makes it easy to set up theprojector (correction angle: up to +- 20overtically).Automatic keystone correctionConvenient functionsAlong with its mobility, the PLC-XC55/XC50 features high-output 7 Wspeaker that deliver sufficient audio authority for the projector to beused in conference rooms, classrooms, and other spaces with only thebuilt-in speaker.Computer 1 Computer 2 Video