Note: If you are interested in LED projection and consider buying it, please read this assessment, and you will have unexpected gains.

         Private cinema should be a dream of most people of our generation. After all, as an entertainment activity in the late 1970s and 1980s, it is either a bully or a Hong Kong produced film. Films even have a great impact on our world view. Cinema is an extremely friendly place for us. Moving the cinema home is also a pursuit of some people.

         I am one of so many pursuers, and I love movies, so I spend a lot of money to build an audio-visual room at home. JBL's 8-inch paper basin, No. corner floor box, JBL cinema use surround to achieve the sound environment of the whole room, Harman Carton's flagship power amplifier provides a strong push for the speakers, and emits magnetic thick cinema sound, Sony's hw55es projection achieves a 150 inch giant screen, and the SVS PB13U subwoofer brings an overwhelming sense of bass diving and volume. Maybe these configurations are only medium in the circle. After all, I haven't tried to penetrate the sound screen 3dlp, front and rear power amplifiers, after all, has no limit to fever, which destroyed three generations. However, a fever in the brain at that time prompted me to become familiar with and understand the audio and video equipment today, which helped me understand that the essence of film lies in its plot rather than pure sensory sound effects.

         However, the premise of these insights is that I already have a set of audio-visual equipment worth hundreds of thousands of yuan. As mentioned above, you can take a 23 inch LCD screen+2.0 earphone as an example. You will never reach the level of returning to nature. It is the right way to select audio-visual equipment suitable for your environment and achieve cost-effective audio-visual experience.

         I think there are only a few people who don't know about LED projection. With tens of thousands of hours of life, it seems to have replaced the trend of traditional projection under the hype of domestic manufacturers, The 4k full HD advertising words that sell human organs (you need to be ashamed) have refreshed our three views three times and four times, so the projection of domestic led in the professional user group is almost zero market. Although false publicity and the evil feeling of stealing concepts are indeed a small part of the factors, the main reason is that the brightness of the projection of national led is still unable to achieve 133-150 inches of launch at this stage, even if the Ottoman, The few lg models that use standard 0.65-inch dmd chips, with a physical resolution of 1080p and brightness of 1000 lumens, also need to use high gain screens to barely reach the brightness standard of 133 inches. What do you want to say? How to achieve 300 inch advertising words? They don't care whether the brightness of your 300 inch launch is between 12-16 fL of THX standard. It's not their responsibility to be blind!

         Here, Xiaoke is ready to tear off the mask of false propaganda and popularize it to the readers:

         The brightness of traditional mercury lamp is generally about 1000-3000 lumens. Depending on the positioning of the product, the household lumen is generally about 2000 within 20000 yuan, just like Xiaoke's sony hw55es. The brightness is 1700 lumens. 150 inches in a completely black room is the maximum. The brightness is too low, and the higher the lumen is, the better. If 3000 lumens are 150 inches in 5 meters, Basically, there is no black space in the picture, only gray space. So you can hardly see the medium and short focus of those high-end projections that are often hundreds of thousands. They are standard long focus lenses, so the choice of brightness depends on your own needs and space for the actual size of projection. Without a large villa, where can you get 300 inch walls and 8, 9 meters of projection distance?

         The LED light source is now mainly used for micro projection in the domestic projection market, which uses 0.3 inch DLP Pico chips with a physical resolution of 800p, and is divided into three stages of brightness:

1、 Within 100 lumens, it is generally used for small micro investment and mobile phone companion. It can shoot 3 or 40 inches into the sky with a resolution of 480p.

2、 250 lumens, generally used for medium-sized portable micro investment, with a maximum capacity of 6 or 70 inches and a resolution of 800p.

3、 500 lumens, generally used for large micro investment, can throw 100 inches, with a resolution of 800p.

         So the conclusion is that the projection of led light source cannot replace the position of traditional projection at the present stage, but it can have a certain impact on the market of flat panel TV. The 250 lumen to 500 lumen led projection can completely achieve the viewing experience beyond the middle and low end LCD TV, while those LED projections that indicate 1500 lumens and 2000 lumens are all dummy parameters, which can not be true!

         Some people not only have to ask why 1700 lumens can be used for 150 inches, but 500 lumens can be used for 100 inches? That's because traditional mercury lamp projection uses medium and long focus, zoom lens, and 150 inch projection distance of 5 meters, while LED micro projection uses fixed and short focus, and the projection distance is only 2 or 3 meters, so the natural light attenuation is much reduced.

         Others also asked, "What's the age of 800p?"? It should also be popularized here. Before August this year, 1080p DLP Pico chips below 0.47 inch did not exist in the market at all. That is to say, you can only buy 800p LED micro investment chips. Although TI released a 0.47 inch 1080p DLP Pico chip in August, chips alone will not work, and the design of micro projectors also takes a long time. In China, only Hongdie, Anhua, Guangjing The more professional opto mechanical design and sales manufacturers of Xunda, that is to say, all the famous micro investment in the market, except for the shell and the pcb with its own OS system, bulbs and other parts, may be of the same origin. Of course, because the design ability and adjustment ability of different brands are different, the effect is also very different, and they are launched within 100 inches, The difference between 800p and 1080p is not so great as expected. After all, it is not easy to see the difference on the screen, especially when playing cartoons.

         The above mentioned Hongdie Technology, which is the main character of this evaluation, is the company holding the brand Shenhua. When Shenhua released Y1, Xiao Ke focused on Shenhua. Although he relied on high play, it is also an indisputable fact that led projection has a long life, low energy consumption, and can be opened and closed at any time. In addition, Y1 500 lumens and 100 inches are enough to meet the demand for bedroom and study, It also has new functions such as auto focus and dual lens body sense. When contacting Shenhua to apply for a taste of the new product, I learned that the new product was coming into the market soon, and sent me this 250 lumen Z1, which is targeted at the portable model. Although this Xiaoke residence is located in its own courtyard, there is no white wall in the community to force me, nor does it engage in real estate and insurance sales. No customer asked me to demonstrate the ppt, However, in the spirit of (and concurrently) professionalism, a complete experience evaluation was conducted for Z1.

         The outer package is made of thick cardboard, with simple design.

         The slogan and logo of the hot silver brand are high-end.

         The packaging sponge is used to fix and protect the Z1. The stacked packaging structure commonly used by micro investment is actually learned from the iPhone packaging.

         Below the sponge layer are the instructions and accessories of Z1.

         Including Z1 host, remote control, USB remote charging data cable, HDMI high-definition transmission cable, 16V, 2A power adapter and power cable.

         The overall dimension is 160mm * 98mm * 25mm, but it is actually 30mm when placed on the plane because of the relationship between the foot pad. This size is slightly smaller than a 32k size book, which is very convenient to carry. The upper cover is made of high-strength acrylic indicating high gloss to ensure the heat dissipation effect. The outer coat is chrome plated decorative ring, and the middle frame is made of aviation aluminum CNC.

         Different from the traditional micro projection, the imaging lens of Shenhua Z1 is equipped with a somatosensory lens, which can be used with the remote control to achieve faster and more accurate somatosensory operation.

         Extensive expansion is also available, including USB 2.0, TF card slot, HDMI input and AUX 3.5mm audio output.

         The bottom is a flame-retardant plastic part, which is densely covered with heat dissipation holes and a fixed screw hole on the foot stand. The internal heat dissipation copper fin can be vaguely seen. The efficient heat dissipation design can effectively micro cast to avoid jamming and crash. In fact, the heat dissipation design is a very important part. Although the heat output of the led light source is far lower than that of the traditional light source, the high temperature will still age the plastic part and affect the overall life of the optical machine, It will also affect the operating stability of the Android system. For example, the cooling of a brand's micro projector is not well done, and the air outlet is designed downward, which causes the device to often fake death.

         As a micro projector for in-depth customization of the Android system, the remote control is also the same for thousands of times. The menu, home page, return, and zoom buttons surround the OK button. A human touch button on the upper side can activate the gyroscope. A 3d function button has a slightly hard feel. In addition, the Z1 remote control has canceled the direction button, which reflects the choice purely by the sense of body.

         However, the overall workmanship of the remote control is really good. The standby button on the left, the volume increase/decrease button on the right, and the micro USB charging interface are set at the bottom to avoid the trouble of purchasing button batteries. The infrared/laser head on the front has a light output that is difficult for the human eye to recognize, so it is marked not to directly hit the human eye.

Projection distance: 27 "@ 1m, about 2.8m for 63 inches, you can get sufficient viewing brightness, and the brightness within 70 inches does not affect viewing.

System: sufficient configuration, beautiful and concise system UI, and friendly operation.

         Shenhua z1 adopts an in-depth customized Android 4.4 system, which is equipped with a 2.0G A9 quad core processor, a Mali-450 MP6 eight core graphics processor, 2G memory, and 8G flash memory. In terms of configuration, it should be able to meet the needs of most Android platforms for video decoding and software operation. Anyway, there is no more specific testing. Mainstream video formats and original disks Remux resources can be decoded and played smoothly. Of course, Z1 also has a built-in 4k player. However, for a 720p projection, decoding non mainstream 4k video is meaningless, so we will not test it.

         The in-depth customized Android system interface is divided into five parts: home page, cinema, application, input and settings.

         Home page: It integrates popular aggregated video resources and app shortcuts.

         cinema: Segmented aggregated video resources such as movies, series, animation, etc.

         Application: Android applications can be installed as required. In particular, z1 does not have a built-in office module, and office software needs to be opened in the application interface.

         Input: Other non online video sources, such as local files, Android on screen, Apple on screen, and HDMI input.

         set up: The in-depth customized android setting interface adds personalized settings such as auto focus, manual focus, trapezoidal correction, and color adjustment.

Experience: 2.4g/5g dual band wifi, auto focus, dual lens body sense 、 3d And other experience advantages

         Z1 is configured with 2.4g/5g dual band wifi. Through gigabit wireless routing, you can access massive resources in the nas. The actual test found that the original disk of the bd50 still has frequent caching, bd25， In particular, 1080p+dts can be played smoothly, and 720p American TV series can be played easily. Given its 720p resolution and no hdmi output, the sub era audio track can be said to be meaningless, so the transmission efficiency is acceptable.

         Auto focus is also a feature of high-end LED projection. Traditional projection is rarely used, and it has never been used in the portable version of micro projection, which also improves the convenience of user operation. It is worth noting that if it is not placed correctly, it will cause inaccurate distance measurement, leading to partial image blurring.

         The enhancement of dual lens experience should be regarded as a masterpiece of divine painting. It first appeared on Y1 of divine painting. This is the first time that I feel that intelligent projection is not a simple combination of projection+TV box.

         The traditional somatosensory remote control uses the gyroscope in the remote control to determine the gesture, so as to move the cursor in the interface. However, because the hand movement is easily beyond the movable range of the cursor, the positioning accuracy is extremely low, and the probability of misoperation is high.

         The double lens somatosensory enhancement of the divine painting is to project the light that cannot be seen by the human eye at the top of the remote control onto the screen, identify the position of the light projection through the somatosensory lens, and then move the cursor. What kind of experience does this principle bring? As you hold a laser pen to project the screen directly, you can feel it with your hands and fingers, especially in teaching, business demonstration and somatosensory games. The only regret is that the remote control of Z1 uses infrared principle, so you should pay attention to the angle of function key identification. In addition, there should be no obstructions between the remote control head and the screen, otherwise the cursor movement will be affected.

         In addition, the divine painting Z1 supports 3d. Switch 2d, 2d to 3d, left and right 3d, and up and down 3d modes through the 3d function key of the remote control. However, since the Z1 standard configuration does not include 3d glasses, all the effects cannot be tested this time.

Expansion: USB hardware identification, mobile terminal on the same screen, HDMI input, to meet most expansion needs

         Z1 is configured with a USB 2.0 interface, which can recognize 1tb passive mobile hard disks in addition to ordinary USB disks and keyboard and mouse hardware.

         Even when the phone is not powered, you can turn on Z1, and then let Z1 sleep through the remote control. At this time, the USB interface of Z1 is powered on, which can charge the phone. The 8500 mA battery is enough to charge the phone 2-3 times.

         Z1 supports the wireless push screen of Android DLNA protocol and IOS Airplay protocol, that is, the mobile phone or pad screen of Android IOS system can be pushed to Z1 wirelessly in the network environment, mainly for the convenience of mobile media sharing in the home environment.

         The HDMI interface attempts to connect the VTEN 10 hard disk player and the Blu ray player. Both can switch signals normally, but when other signal sources are used, unlike the traditional projection, the menu can be called out for picture setting.

Range: 8500mha, The endurance is satisfactory.

         In the energy-saving mode, the movie can last about 120 minutes. Generally, non long movies can be watched. If the frequency and traditional sense operations are carried out, the time will be shortened. Because the endurance time changes dynamically according to the user's actual operation, there is no specific quantitative number, which can only be said to be equivalent to similar products. In business applications, A simple demonstration is more than enough.

         The remote control of Z1 also has a 1000mha battery, which can last for 35 hours continuously.

Projection effect: the red, blue and green primary colors are restored well, the brightness is evenly distributed, and the lens size is small, resulting in a little lens distortion.

         In fact, I am not interested in screen photography at all, because there is no consumer camera that can completely restore the colors seen by the human eye. The screen photography seen at ordinary times is just the product of projection+screen+camera different parameter settings+later stage. In addition, each brand has different color performance adjustments for cameras, with so many variable factors, How can we know the quality of a projection through screen photography? However, according to the evaluation of urine quality by the vast number of audio-visual equipment, we have no choice but to present: first take the pure white picture as the white balance reference, then use the vten10 hard disk player hdmi to input it to Z1, and play the original Avatar and Juvenile Pie disks for screen photography. We can only restore some impressions as far as possible, for reference only!

Conclusion: Who can consider starting with Z1.

         First of all, you need a micro projector that you often carry, because if you can't take it out, you should buy a LED micro projector with more than 500 lumens, such as Shenhua Y1. Of course, if you can accept the high price, mercury lamp with obvious light decay in 1000+hours, power failure will also cause light explosion due to high temperature, need additional playback sources and other problems, The current projection effect of traditional projection is incomparable to led projection.

You need to use 3D, often play somatosensory games, and often do business demonstrations. After all, in the 250 lumen LED projection, it is estimated that Shenhua will configure so many high-end settings for this price range of products, especially the somatosensory lens, so that the remote control experience in business demonstrations is higher than the use of laser pens.

         Looking at the LED micro investment of many brands, Shenhua Z1 can undoubtedly push many competitors in the 250 lumen series of products. Of course, the premise is that the price gap is small, because the effect is proportional to the price according to the Y1 pricing. If the 250 lumen brightness pricing is the same as the 500 lumen brightness pricing, the competitiveness will be much smaller.