# Original innovator #REC.709 color gamut blessing! ViewSonic ViewSonic PX725HD Projector Unpacking Experience

This year, I was assigned to work in a branch office. Initially, I planned to apply to the Director General for permission to buy a TV room for the dormitory. However, he didn’t approve it, and I decided to be more resourceful. Instead of going for a TV, I applied for a projector, and to my surprise, it was approved. That decision turned out to be one of the best choices I've made. After being selected, I found that the projector supports 100% REC.709 color, which is quite rare. It cost 4,000 yuan, so I made the purchase during Double 11. I have to say, JD.com is still super fast with its delivery. I received the package within a day, and the packaging was very tight—wrapped in multiple layers of bubble bags. The box itself is black, matching the machine's design. Inside, there’s a layer of foam that holds the projector in place. When I opened it, there was an outer bag protecting the unit. After taking it out, I could see the real body of the projector. The lens has a recessed design, and the lamp is 240W. In economic mode, the lamp life is up to 6,500 hours, while in normal mode, it's 3,500 hours. Since the lens doesn't come with a protective cover, it's best to keep it in the bag when not in use to avoid dust. The machine has physical buttons that make it easy to operate, including switch-on, trapezoidal correction, and other functions. It supports vertical trapezoidal correction, and the entire unit weighs just 2.9kg, making it very portable. I recommend using it for watching or presentations because I’ve noticed that trapezoidal correction can sometimes reduce image quality. On the side of the machine, there are two adjustment rings. The smaller one has a protruding gusset plate that allows you to adjust the focal length by toggling the gusset. The larger ring adjusts the lens distance. Manual adjustments are needed each time depending on where you place the projector. The cooling vents are efficient, and the fan is clearly visible. The interface is well-equipped, featuring two HDMI 1.4 ports, one VGA port, one RS-232, one audio input, and a mini USB Type-B port, which should meet most of your needs. At the bottom, there are small heat vents and some basic information about the machine. Included in the package were the user manual, warranty card, and instructions for the REC.709 standard. When I turned it on, the color transition looked natural. In default mode and when connected via HDMI, the PX725HD automatically switches to REC.709 mode. The boot-up speed is fast—about 3 seconds to start, and it turns off instantly. With a resolution of 1920x1080 (1080p) and 2,000 lumens, it performs well even during the day. Recently, I used it for a movie night, and the projection quality was quite good. I also tested it with different color charts and compared the display from my laptop to the projected image. The projector showed clearer and more vibrant colors. In dark scenes, the screen remained bright, and food images looked more glossy and appetizing. Overall, even though I haven’t used it for long, the most noticeable feature is the color accuracy. With the six-speed RGBRGB color wheel and special coatings that filter RGB spectral segments, the colors are richer, with better hue and saturation, resulting in smooth and natural visuals. One thing that surprised me was that there was no signal cable included. I asked the seller, and they said there were no standard HDMI or VGA cables. It seems like the manufacturer tried to cut costs. Fortunately, I had an HDMI cable already, so I didn’t need to buy one. Overall, this projector at this price is a great deal, especially considering it supports REC.709 color gamut.

0.96inch OLED

In terms of display effect, the advantages of OLED screens are too attractive compared to LCD screens. The OLED screen has the function of individually controlling the pixels. In daily use, not every scene needs to light up all the pixels of the screen. Therefore, it can display a more pure black effect, and can also achieve 1000000:1 in terms of contrast ratio, so that the bright places are bright enough, and the dark places are very dark, bringing a more realistic display effect.

In addition, compared with LCD screens, OLED screens have removed components such as backlights and polarizers. In terms of sliding and touch, OLED screens can provide a touch response speed of 0.2ms, and dynamic content such as content sliding and games. In the scene, the OLED screen can provide a clearer look and feel.

It is precisely because of this that more and more notebook manufacturers are beginning to deploy and promote OLED screens on their own products to further improve the display effect of their own products. Among the notebook computer manufacturers, ASUS is the most active. The slogan of #ASUSscreen# has been played before, and with the help of high-quality OLED screens, it brings a more amazing display effect than LCD. The recently launched new product, the ASUS Unparalleled series, has brought the 120Hz high-brush OLED screen to the 5K price range, reducing the dimension of products at the same price.

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