When it comes to VR cameras, we have to mention Detu. As one of the earliest domestic manufacturers, Detu has accumulated considerable experience in the field of VR cameras. It has launched many highly praised products in both the commercial market and the consumer field. In particular, its commercial VR camera has been very mature, and its predecessor F4 has a very good reputation, Recent pictures have brought you our new flagship, F4 Plus. Let's take a look at its strengths.
Appearance and product details
In terms of packaging, F4 Plus can be described as "powerful". It is equipped with a very aggressive tool box, which gives the impression that it is sturdy and durable at first sight.
The tool box is made of solid materials and has a handle design, which is easy to move and use. It can also be easily carried when going out.
The snap adopts a toggle design to prevent accidental opening, with double safety to prevent damage to the fuselage due to accidental opening.
The inner layer is made of foam material, which can effectively protect the equipment from damage due to shaking.
There are a lot of accessories, each of which is wrapped in a small box.
In addition to the accessories attached with the car, the F4 Plus will also provide a seat charger and a second battery for the first launch. With the seat charger and backup battery, the pressure on the endurance will be greatly relieved.
It uses a 7.4V 4800mAh battery. The removable battery is much more convenient than the F4 built-in rechargeable battery.
Attached is a family photo. Power cable, charger, seat charge, battery, network cable, USB 3.0 data cable, keyhole adapter (for the installation of tripod and other equipment), instructions, mirror wiping cloth, etc. are all available.
There is a very thick silicone protective sleeve on the top of the fuselage to protect the four lenses from external force damage. The lens is attached with a protective sticker when leaving the factory, which can be used after being torn off and wiped clean.
Tear off the protective film, and the large F4 Plus at the bottom shows its identity. Compared with F4, the appearance design has changed a lot. Although it is still a columnar design, a stepped transition part is added between the lens and the fuselage, which is convenient for more efficient heat dissipation of the lens and fuselage.
There is the word DETU camera on the top of the fuselage, which is also the logo of the figure.
F4 Plus uses a 1/2.3 inch sensor from Sony and is equipped with a fish eye lens. Four identical lenses together form the lens set of F4 Plus.
The trapezoidal partition at the bottom of the camera and the upper part of the fuselage is equipped with heat dissipation holes. In the long time and high intensity VR recording, the fuselage and the sensor group have relatively large heating capacity. This design can greatly improve the heat dissipation efficiency.
The fuselage is designed with brushed metal, and the overall mechanical feeling is very strong. When you hold it, you will have a sense of science and technology that precision instruments should have.
There are some product information printed on the back, and the overall drawing style makes it have an excellent texture.
The structure of the bottom of the fuselage is complex. The battery compartment, network cable interface, battery interface, USB 3.0 interface, microphone input, etc. are all located at the bottom. The four openings on both sides are TF card slots. When using the machine, four high-speed TF cards need to be inserted at the same time to meet the input, read and write requirements of VR recording.
Use experience of photography, APP and supporting software
In terms of use experience, the F4 Plus in the figure uses an integrated body. The highly integrated design makes its body quite compact. It can be easily stuffed into the backpack when shooting outside. Compared with those VR cameras with complex structures, the F4 Plus is very convenient to carry. After setting up the F4 Plus, press the power button on the body and connect it to WIFI, and then you can control it through the mobile phone APP. F4 Plus supports 2.4G and 5G frequency bands, and can support a transmission distance of about 30 meters at most.
In terms of APP, Fig. F4 Plus is quite simple, focusing on shooting function, with only two option pages of photographing and video recording, without any redundant and disorderly functions, which can be regarded as a clean stream in domestic APP. Single round photography and video are still relatively powerful, with a full range of options. There are all the options that VR cameras should have, and they are relatively convenient to use. The shooting time of a single picture is about 2-3 seconds, which is longer than that of F4. You need to wait a little while for continuous shooting. Fortunately, F4 Plus's color performance is good, and the shooting time may be to obtain more color data.
In use, the automatic function of the camera itself has been very powerful, and its automatic mode is enough to deal with most shooting scenes. However, users can still set their own parameters to obtain the desired effect. For example, those who prefer a slight overexposure tendency can appropriately increase the exposure.
In terms of photo synthesis, F4 Plus can output spliced 8K resolution photos through the supporting DetuStitch software, and video can output up to 8K, that is, 7680 * 3840 resolution video, which is convenient to use without too much manual operation. However, it should be noted that VR video contains a large amount of data, so the performance requirements are relatively high, and the output will be slow. When outputting 8K video, a high configuration computer is required.
In terms of video splicing, the splicing methods are divided into regular templates and user-defined templates. The former can output quickly, while the latter can make specific adjustments for different scenes. Users can also choose their own bit rate, delay photography, coding format, etc.
In addition, you can also use advanced mode to perform some simple editing, zooming in, reversing, adjusting the perspective and other functions. However, the advanced functions are still in the beta version, so editing is not very powerful, but the general ability to cut corners is still no problem.
The splicing of photos is simpler. You only need to select the splicing template, logo file and output directory to batch splice and export. Compared with video, the output of VR photos is much faster. However, it is a VR camera that can directly output 8K photos. The volume of a single photo is about 20M, so you need to be patient when outputting a large number of photos.
Imaging effect
For VR cameras, the hardware is only a part, and the algorithm is also very important. Dutu, which has developed in the VR field for many years, has accumulated rich experience in this field. The photo splicing is natural and smooth. The imaging effect of the four cameras is quite close, and the overall feeling of the picture is very good.
When it comes to panoramic photos, we have to mention F4 Plus's signature selling point - 8K. In this era when 4K displays and VR glasses have not been popularized, and even 2K is not mainstream, DeTu has raised the resolution of VR source film to 8K at one stroke, which is also the highest parameter currently supported by VR cameras. In terms of technical innovation, DeTu's efforts are unquestionable. In terms of picture effect, its brightness, contrast and color accuracy will be adjusted by the software during composition, and most of the photos after output are highly consistent, especially the outdoor samples. The picture brightness is uniform and reasonable, without obvious differences, and the integrity is not to be selected. However, in some dark light environments, a camera may be partially bright or dark, but the probability is not high. It is recommended that users take several more photos in the same scene for selection.
The matching DetuStitch synthesis software and image browser support a variety of browsing modes, including ordinary, curved, fisheye, asteroid, and tile. Users can choose different display modes according to their preferences, of which fisheye and asteroid modes are very interesting.
Daytime samples (photos can be selected, dragged by mouse, and viewing mode can be adjusted)
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Thanks to its powerful color collection ability, its daytime samples, especially in bright environments, are quite outstanding. For VR photos, it is not only necessary to deal with the brightness and white balance of the local image, but also the performance of the overall image. If the local image is too bright, it is easy to be overexposed or the brightness of the image is uneven when placed in the overall image. Therefore, it is not easy to take into account the overall image and local performance. After giving consideration to the whole and the part, it can be said that F4 Plus performs very well. In terms of local pictures, the white balance performance is accurate, and the picture levels are relatively rich. The most valuable thing is that the photos of such a large size also ensure sufficient analytical power.
Nightscape Sample (you can select photos by yourself, drag the mouse, adjust the viewing mode, etc.)
In dark light environment, the performance is inferior to that in daytime, but the unit pixel area of the sensor is larger than that of many mobile phones, so it has good night brightness performance. In terms of the expressiveness of local image quality, especially in terms of noise, there is still some room for improvement. However, for current VR cameras, it is hard to have such imaging ability at night. As for tolerance, the current 1/2.3 inch sensor is a difficult problem to solve. If you want to have enough brightness of the whole day at night, you must sacrifice some details of the highlights.
VR video daytime light test
VR video night light test
VR video indoor light test
It is worth mentioning that F4 Plus has added support for high-definition VR video, which can perfectly view from all angles. Although the definition is certainly worse than that of photos, for a panoramic camera, the image brightness, fluency and color performance at night are amazing. However, it is worth mentioning that although VR video can bring us a cool browsing experience, correspondingly, VR video contains a very large amount of data. As short as three and a half minutes of VR video, the volume is up to 1.2GB. If users need to shoot VR video for a long time, they should also prepare several storage cards with large capacity.
In addition to the image quality, we also need to give a good comment on the cloud service of DeTu. It supports uploading VR pictures and VR videos, and can also create a "roaming", that is, the album function. It supports the sharing of single pictures/videos and albums, and can be directly shared to third-party websites such as WeChat Weibo, or embedded in the web page through link codes. It is very convenient to share with family and friends, It avoids the embarrassment of not having a VR specific browsing tool.
summary
F4 Plus, as the most high-end VR panoramic camera currently available, is almost impeccable in terms of functionality. The four cameras all use 1/2.3 inch sensors from Sony, and are equipped with F/2.2 aperture fish eye lens. The resolution can be taken with 7680 * 3840, which is commonly known as 8K panoramic photos and videos. This is also the highest parameter that current VR cameras can support. In addition to the breakthrough in audio and video size, its image quality has also been further enhanced. There is no place to be picky about color, white balance, and noise control. F4 Plus has almost no other competitors at the same price.
In terms of use, F4 Plus is also very convenient. The remote control of mobile phone APP greatly enriches the available scenes and avoids the situation that users are forced to enter the camera during shooting. In addition, DeTu has also developed special supporting software, which can quickly export VR panoramic photos, and has cloud services to share support. It can be said that DeTu is not only building an 8K panoramic camera, but also building an ecosystem around VR. With the rapid development of science and technology in recent years, the popularity of VR has been greatly improved, and it is also constantly impacting the traditional display media. Although it is not a mainstream display medium at present, in this wave of three-dimensional replacing plane and VR replacing display, Detour is undoubtedly at the forefront of scientific and technological innovation, and I believe that after cleaning up the lead, Detour will have a brighter future.
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