AVS Forum Club Gold
Join Date: Jun 1999
Location: Jacksonville, FL
Mentioned: 4 Post(s)
Tagged: 1 Thread(s)
Quoted: 1238 Post(s)
Bob- did you see where the Kudrone web page now has a disclaimer that the video they show was not recorded with the Kudrone? I saw that after I scrolled way down the page.
The 1080p output from a 4K sensor is how the image stabilization has to work if it is digital. They all work the same unless using a gimbal. Even the Dobby works this way. But even the Dobby lacks recropping the video on the fly to full screen, so you get these black bars and triangles around the edge of the video. So not only is the video soft as in 1080p but if you then zoom in so that the stabilized image removes all those black areas, you get not even 720, but more likely SD or 480p. The image gets real ugly very fast. The only true way to shoot with a drone is to use a gimbal optical stabilized recording. Now you can get true 4K, image stabilized and it looks great.
So what about this 15 fps in 4K? Most likely this has to do with the bandwidth of the internal recording memory. In order to record 4K at 30fps with a 60Mbs, the standard for UHD so it looks like UHD, you need to have a memory card that is capable of 95Mbs so that no frames will be dropped. I have tried with my AX53 to use slower cards and they just drop too many frames. Not only the card has to be fast enough on record speed, but the processor has to work that fast too. Then there is the battery life, Higher recording quality eats up battery and these tiny toys just have no run time to begin with.
From my research, the Dobby seems to offer the most bang for the buck and is available today. You can get 15 minutes of flight recording the SD quality ( as we measure it ) by buying 3 batteries that last 5 minutes each flight. ( that will run about $450 for a 3 battery kit ) It does have GPS so you can locate the thing if lost. The recording will stop to preserve battery to land when the battery is low. But it will not automatically return to home when there is still enough battery left and loses wifi signal. Basically these light weight drones are not much good for anything except flying right in front of you a few feet away.
If I get one of the lightweight drones it will mainly be because of it's size, but I will wait for the technology to improve.
I have a few complaints with the dji Mavic Pro but most of them are operational right now. The controller ergonomics is horrible. The iphone is hard to see in bright sunlight and with a sun shield, the home button is difficult to reach. The image on my iphone screen is color inaccurate that scared me at first until I saw the recording was UHD and perfect quality. Basically assembling the drone for flight is easy and slick. But that controller is a complete mess to assemble. Hard to see the iphone screen in bright sunlight and I can't figure out why the image from the drone makes all the green trees pink.
The gimbal performance is the best I have used, making every video rock steady as if it was on a tripod or a Hollywood movie style smoothness.
I have 3 batteries and each runs about 25 minutes. But the iphone using full screen brightness and all the other stuff running will kill the battery in about an hour. So an iphone quick charger battery would need to be carried along. There is no way to run the phone off a bigger battery because the RC controller plugs into the charging lightning connector on the phone.
I want to experiment with my ipad air 2 to see if that works any better. I will need to invent my own mount for the controller as there seems to be nothing yet on the market. ipad air 2 may be the answer to some of the problems I have with the ergonomics.
My 3D videos and more
Don Landis HT System: Projector Sony VPL VW665ES Players: Samsung UBD K8500 OPPO BD93 Sony BDP S6200 All Regions Player Denon AVR 4311ci, 7.1 JBL Professional series and Klipsch PS3, XBOX360, Dish VIP722K
Last edited by Don Landis; Today at 06:43 AM.