This is a good offset for tabletop placement as the center of the image is at about eye level for an audience that is sitting close to the screen. Image offset is +18.5% of image height, so a 72" diagonal image has its lower edge about 6.5" above the centerline of the lens. Image Size and Position: To project a 72" diagonal image in native 16:9 aspect ratio, the PK-301 needs to be about 9.5 feet from the screen for the focus adjustment to be effective. There is also a mini-jack audio output for an external amplifier and a micro SD slot on the side of the PK-301. These micro connectors also accommodate several optional adapter cables. The included cables are a Universal I/O which terminates in a female DB-15 for computer connection, an AV cable with RCA connectors for composite video, and a Micro USB that presents a full-size USB male connector. Our sample unit's brightness uniformity of 72% was a little lower than expected for LED illumination where light is more collimated than with high-pressure lamps, and the left side of the image was slightly brighter than the right.Ĭonnections: To save space, Optoma uses micro connectors on the rear of the PK-301, so adapter cables are required. you must use the AC adapter to achieve the brightest picture. Note that Bright and Movie mode brightness levels are not available in battery operation.
It put up 53 lumens in both Bright and Movie modes, 26 lumens in Standard mode, and 13 lumens in Eco mode. Brightness and Uniformity: Unlike many projectors, the PK-301 more than delivers on its brightness specification of 50 ANSI lumens.
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