Not suitable for aerial photography? It’s better to explore the Dajiang spark camera function in depth.
Dajiang spark is a toy for positioning self-timer drones . This feature is especially obvious in the early generation. The flight time in air safety is only about 13 minutes. The WiFi map is easy to lose. Generally, if the flight distance exceeds 1000 meters, the altitude is 120 or more. Even the time for taking pictures will not be left to you.
In order to reduce the size, a two-axis mechanical head is adopted. The heading axis can only be realized by the rotation of the fuselage. The stability of the heading axis can only be stabilized by electrons, which directly results in an aerial video frame rate of only 30 frames. , 1080p specifications, can only be said to be barely enough.
As an aerial camera, spark is obviously not suitable. It is its main business to play with a small video. Then, it is better to explore the camera function of Dajiang spark.
In terms of shooting function, in addition to continuous shooting and depth of field, the other functions are very useful. You can use this drone as an iPhone with a tripod to fly, the skills that can be used to take photos, spark Can be used, just not supporting DNG is a bad injury.
In the intelligent flight mode, the tripod is a very useful function. On the basis of this, it can better realize AEB continuous shooting, night scene long exposure and time shooting, and later synthetic delay video.
AWB continuous shooting: the essential function of synthetic HDR, fast shooting three photos with different exposure parameters, after all, spark does not support dng, occasionally will catch the light under the conditions of light, not to mention the big light than the conditions.
Timed shooting: the essential function of synthesizing delayed video. Although the spark dead time is not long, a battery can theoretically support a delay video of 24 frames and 10 seconds.
The latest firmware can support spherical panorama and 180 degree panoramic shooting, 21 automatic synthesis. Compared with the previous panoramic shooting, the 180 degree panoramic post algorithm has improved a lot. Later, PS synthesis is even obtained with a large image of about 5000w. This is the standard for 9 shots of panoramic photos that can't be reached with PS.
There are still many problems with the current algorithm of spherical panorama, and the requirements for the shooting environment are higher. Fun is the meaning of its existence.
Let's take a look at AWB continuous shooting. In fact, for the big light than the scene, 3 is too little. Under normal circumstances, 5 or 7 composites can highlight the details, but this is not too big a problem. Manually select the exposure parameters. By enabling AWB continuous shooting twice, you can get 6 photos with increasing exposure.
The most popular HDR compositing software I use is Photomatix Pro, which supports Mac and Win. This is an easy-to-use compositing software that supports Chinese and RAW. It comes with a lot of presets, but in general, I only use the most natural presets. .
HDR is easy to be controversial, and if it is not properly handled, it will become a dirty art work.
This photo is composed of a total of 9 AEBs in the 3 groups of drones. The basic shooting method is to turn on the tripod mode, three AEBs, slow down, and three AEBs; continue to slow down, and again AEB three.
This photo doesn't look special, but considering the drone's small bottom and JPEG straight out features, it's already an extreme performance.
Let's take a look at the time-lapse video, set it to 2 seconds for a shot, and get about 200-300 photos:
There are a lot of software for making time-lapse videos, and I am lazy to use AE here.
The sequence is introduced in the AE.
Set the frame rate to 24 frames per second.
The built-in deformation stabilizer can solve some of the flicker problems, but the effect is not as good as the professional delay video production tool.
After the calculation is completed, the output can obtain a delay video.
In the case of safe flight, a second of 2 seconds can finally produce a video of about 7-8 seconds.
Panorama synthesis, under normal circumstances, whether it is 180-degree panoramic synthesis and normal panoramic shooting, the photos generated by the APP are not large, which is set to reduce the burden of the parking operation. However, we can find a folder named panorama in the root directory of the memory card, which will automatically include the photos taken. The 180-degree panorama is 21, the normal panorama is 9 and the vertical composition is 3.
Here are some details:
The 180 degree panoramic material is put into the PS and synthesized more widely than the APP.
The picture above shows the photos synthesized in Photoshop. The picture below shows the photos synthesized by DJI GO4 APP. It can be seen that the obvious range is much smaller.
The general panorama material is synthesized in the PS to be narrower than the APP range. This is an algorithm problem, and the PS is generally close to a square after synthesis.
The above picture is the effect of Photoshop synthesis, which is significantly smaller than the range of DJI GO 4 synthesis.
If you want to compose the vertical composition, it is better to use the normal panoramic material Photoshop to synthesize the vertical crop.
PS Photomerge is the best tool for panoramic synthesis. The CS3 version has this practical function. The early Photomerge is not smart enough, and the seams will have visible seams. The current version basically does not need to be manually processed.
However, due to the wide viewing angle of the 180-degree panoramic range, many times the sun will enter, the low tolerance of JPEG and small bottom will often only be exposed to a pale, which will lead to the automatic alignment of the PS synthesis, which needs to be manually deleted. 3-6 sheets of exposed sky pictures.
In the previous aerial photography, the software card died in this step of synthesis. Later, it was found that several pieces of the over-exposure caused the software to be unrecognizable.
The synthetic problem can be solved by manually deleting it.
In fact, no matter what equipment, as long as the best use of things, you can always play some suitable patterns for yourself.
In fact, I am very much looking forward to the next generation of Dajiang to combine spark and Mavic into a new generation of new product lines.
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