Nothing has been available to share for everyone. This eleven holiday vacation chased a few days of TV dramas at home and suddenly discovered that I could share with you my ViewSonic PJD7720HD projector.
This machine was bought by me in the early part of the year and it will be used for nearly two years now. I moved several times with me. As a north drift, because the landlord did not rent or soared rent, each time he had to Moving, moving home in Greater Beijing has to throw away a lot of things, but this projector has always been with, after all, it is not heavy, when the original purchase also spent four thousand dollars.
The packaging certainly couldn't be shown to everyone. There was no photo in the cell phone, and the carton did not know to be thrown there. Give everyone a look at some of the things that are now available. There is a host, a remote control, a power cord, and an HDMI cable.
This is the interface of the body, HDMI, USB, RS232, etc., can basically meet the daily needs of users.
The body button adopts a bump design, and the buttons of the body can be switched on and off, trapezoidal correction, mirror adjustment screen, etc., so that even if the remote controller is not around or lost, it does not affect the use. The trapezoidal correction of this machine is manual, need to adjust the picture through the button, but I suggest that the projector should be straightened, because the trapezoidal correction will reduce the definition of picture quality. This machine is not very heavy, it is also very well placed, so I almost never used this function of keystone correction.
The body of this machine has three cooling vents. Due to the large power, the projector will generate a lot of heat during use. The good heat dissipation performance can guarantee the healthy operation of the machine and protect the life of the machine.
The lens of the machine is recessed, which can protect the light bulb and avoid machine damage. Can see the left side of the fuselage is also a row of hot mouth, but the machine is not equipped with a lens cover, plus the internal spiral lines, easy to accumulate fly dust, this point can actually be improved.
After all, it took a long time, plus several times to move back and forth toss, the lens wall is still a little dust, but with a towel to wipe it like a lot.
The bottom of the machine also has a small hole, so the cooling effect of this machine is really pretty good.
The connection of the machine is also very convenient. You can use the HDMI cable to insert the corresponding interface and you can put it on the same screen. The operation is very simple.
I specifically found a picture with a richer color to cast, and I can see that the delivery picture occupies more than half of the walls. 
Bring the picture closer, you feel it, the projector projected images are bright and bright, you can compare the original picture,
The original picture is as follows: Contrast the above picture, the color is brighter!
I bought this projector as a TV. I didn't have my own house. If the landlord wanted to move, I would have to move it. It was always inconvenient to buy a TV. Plus, if you bought a 100-inch screen, it would be expensive and I would just buy it. A projector, weekend or holiday house at home to watch TV shows, movies or something, can be considered to enjoy a big screen watching.
The recent "Goddess of the Year" starring the goddess is quite fiery. The eleventh holiday was originally planned to return to her hometown, but she did not buy a ticket. She simply took a look at the play at home and every day.
Sleeping naturally to wake up every day, and then lying on the sofa, watching TV, eating small snacks, this 11 is also very interesting. Instead of basking in the sun and crowding around to look at the head, it also saves money.
There is no window in this dwelling room, so I can only give you a look at the lights under the lights, turn on the lights, and you can see the brightness of the projector is still very good. So 3200 lumens, plus the 210W bulb brightness, there is no problem at all during the day.
Give you a look at the screen that was played when the lights were off.
I used this projector for a year or two. During the playback time, I guessed the calculation. At least there are at least 1500 hours. At present, brightness is not much affected. When I bought it, it was economic. The model can be used for 10,000 hours, but I think that after 5,000 hours, the estimated rendering effect of the screen will be weakened and even a light bulb will need to be changed. However, from such a long time of use, no problems have occurred in the machine, the quality is fairly good, and the operation is relatively simple. It can basically meet the needs of households.