The 5040UB offers impressive placement flexibility. Both the intake and exhaust vents are on the front, making it amenable for placement on a rear shelf. However, a large shelf would be required since this is a large projector -- far too large for a typical bookcase. In general, the 2.1x zoom and extensive vertical and horizontal lens shift allow a wide variety of placement options either on the ceiling or behind the seating area. They also make it easy to replace an older projector in a mount, for example, and adjust the image position to fit on an already existing screen. The powered zoom, focus, and lens shift make the adjustment step as easy as it could be.
Keep in mind that if your current HDMI cable isn't 4K HDR compliant, you'll need to replace it. And if you're upgrading from the Epson 5030UB, note that the 5040UB is more than 6 pounds heavier, at 24.7 pounds, and larger in all three dimensions, at 6.7" by 20.5" x 17.7" (HWD) not including feet.
Throw Distance. The 5040UB's throw distance for a 150" 16:9 diagonal image is roughly 14.75 to 31 feet. At the long end of the range, however, the lens will curtail the projector's potential lumen output by 33%. So for maximum brightness, you'll want the projector closer to rather than farther from the screen.
If you want to use the 5040UB's Lens Memory to set up a Constant Image Height (CIH) rig without bothering with an anamorphic lens, the 5040UB makes it easy to adjust image size when switching between material in 2.4 format, 16:9 format, and other aspect ratios. Simply store the appropriate lens settings for each format in one of the 10 memory entries for lens position, pick a setting, and let the powered zoom, lens shift, and focus do the rest. Keep in mind that you'll need to chose a distance that will accommodate the CIH for all the aspect ratios you need. The Epson 5040UB Projection Calculator will let you find an appropriate range for the screen size you want to use.
Lens Shift Range. The 5040UB offers a substantial lens shift for both vertical and horizontal directions. In the neutral position, the centerline of the lens is at the geometric center of the projected image. From this position, the image can shift up enough for the bottom line of the image to be 50% of the image height above the centerline, or shift down by the same amount.
The vertical and horizontal shift ranges are interrelated, so the position for either affects the other. From the neutral position for both, for example, the horizontal shift is nearly 50% of the image width left or right, but from the extreme top or bottom vertical position it's only 10% left or right. If you need to tilt the unit beyond the range that the lens shift allows, you can adjust vertical keystone by up to +/- 30 degrees. There is no horizontal keystone.
For additional details and restrictions on installation, consult the Epson 5040UB User Manual.
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