Altitude Hold allows a drone to maintain a consistent altitude by analyzing the pressure data further provided by a drone’s barometric pressure sensor. If a drone has an ultrasonic sensor, this is also used with Altitude Hold. This feature ensures even a small drone with camera will be able to hold itself in place while you snap some shots or record a video.
Many manufacturers mount cameras inside the body of the drone. This is acceptable for casual photography, but if you want more professional results, consider adding an external camera mount, or gimbal. Gimbals allow you to place your video or still camera in front of the drone body, away from the vibrating motor and rotors. Gimbals can swivel and pivot, providing you with additional control over your imagery.
This drone is based on a design that is a few years old, so it does not have an altitude hold function. However, it does feature a headless mode and a one-key return to pilot function. It can also perform flips at a push of a button, which is fun to watch and perform. To help with orientation with night flying, this drone has blue LEDs at the front, and red LEDs at the back.
These drones are marketed towards beginners because they are really cheap. However, these drones are not the easiest drones on the market to fly. Higher-priced drones, with the ability to use GPS coordinates and that have onboard obstacle detection and collision avoidance, are much easier to fly than these drones. You will have to spend in the range of $200 to $300 to get these advanced features for a drone; however, you may ultimately be happier if you do this than if you lose or crash one of these drones. 
At that point, the advanced obstacle avoidance systems and SmartCapture features are just icing on the cake. But these high-tech features also make the drone extremely accessible to newer pilots who may not know how best to handle their first photography drone. So if you want the power of a Mavic 2 with a less frightening price and intimidating feature set, the Mavic Air is an excellent choice.
The Altair AA108 is durably built and will not break easily. You can count on a solid flight time of around 10 minutes, a bit less when you’re running it FPV. However the 720p camera really works well and connects to your phone through WiFi. It’s easy to fly because it has 3 flight modes, 1 beginner, 2 intermediate and 3 advanced mode. It also has Altitude Hold which allows you to take your thumb off the control and the drone holds it’s own altitude, making it very stable because it’s not bouncing up and down as you try to maintain altitude!
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