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  #16  
Old 25-02-18
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Re: Anyone explored camera drones?

A link showing a direct spec comparison of the Yi 4K and the Go Pro Hero 4 black

Scroll to the bottom.......

I appreciate the link is from Yitechnology and may well be biased.


https://www.yitechnology.com/yi-4k-action-camera
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  #17  
Old 25-02-18
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Re: Anyone explored camera drones?

The main disadvantage of the Yi cameras is that they aren't waterproof without the housing, which is an optional extra, though bundles with the casing are available. The Yi Lite is very good but the 20fps 4K isn't really useful for smooth video. I'm not actually sure 4K at 25 or 30fps is smooth enough so the Yi 4K Plus with 4K at 60fps is now looking attractive at the right price. The official Yi Technology Amazon store has frequent flash sales with big discounts so well worth keeping an eye on them

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Last edited by Ian; 25-02-18 at 12:11 PM.
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  #18  
Old 25-02-18
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Re: Anyone explored camera drones?

Quote:
Originally Posted by Ian View Post
The main disadvantage of the Yi cameras is that they aren't waterproof without the housing, which is an optional extra, though bundles with the casing are available. The Yi Lite is very good but the 20fps 4K isn't really useful for smooth video. I'm not actually sure 4K at 25 or 30fps is smooth enough so the Yi 4K Plus with 4K at 60fps is now looking attractive at the right price. The official Yi Technology Amazon store has frequent flash sales with big discounts so well worth keeping an eye on them

Ian
Understood.

I have been looking at videos on YouTube, shot with the 4K and 4K+

Some very impressive videoing.

Last edited by Ian; 25-02-18 at 12:11 PM.
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  #19  
Old 25-02-18
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Re: Anyone explored camera drones?

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Originally Posted by Ian View Post
I'm currently testing a couple of GoPro rivals from Yi - the Yi Lite (£100 with waterproof case) and Yi 4K (£180 with waterproof case). GoPros now look very over-priced! The Yi 4K even records stills in RAW (Adobe DNG format). If I get along with the Dobby I can see myself getting a larger drone to carry one of the Yis. The problem is portability - folding drones are the way to go, I feel.

One thing to bear in mind is that drones heavier than 250g (the Dobby is 199g) have to be registered with the CAA.

Ian

PS You'd really need a powered gimbal to hang the action camera from for best stability - then you need to consider the landing gear getting into shot If I could justify the cost I'd probably buy a Mavic Air!
Looked at this at Currys, this morning.

Looks an expensive bit of kit.

More than I would want to spend. But it did look good.
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  #20  
Old 25-02-18
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Re: Anyone explored camera drones?

Absolutely - to me one of the fun things is making something that works really well with limited resources. I was all set to buy a Bayangtoys X16 GPS quadcopter and a cheap £30 powered gimbal and attach an inexpensive action camera (Yi Lite) and that would have been around a £225 outlay. I actually bid on a Simtoo Dragonfly on eBay that eventually went for £220, which has a gimbal and cheap action camera - and it's a folding drone, but chickened out after seeing so many have problems with the gimbal (though I suspect this was down to operator error as the seller's example videos, including how to calibrate the gimbal, looked good). Instead, the Dobby deal surfaced, so for £129 (Instead of at least £200 and probably more) I got a different solution. It's actually better for my travels coming up but for the long term I will probably return to the larger drone+gimbal+action cam project. If I win the lottery, then I'll buy a Mavic Air (£770 discounted)

The other challenge, apart from the weather, is find somewhere to fly the ruddy thing!

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  #21  
Old 25-02-18
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Re: Anyone explored camera drones?

I purchased a large drone almost two years ago. It has a very cheap low resolution camera and very little in the way of safety features like return to home or even auto hover. For £65 I thought at the time it would be fun to learn how to fly one. So far it has only been out once. Either it is too cold for me of too windy for the Drone. With only a short 10 minute battery life I did not learn much other than perhaps it was not such a good idea after all for an 80 year old to buy such a thing. Your choice of drone has renewed my interest by I doubt my wife would let me spend that amount of cash on a thing that will never get any real use. Your comment about 4k at 25 fps. Which was the old standard for Super8 cameras. My Panasonic FZ330 produces very smooth 4k video at 24fps or 30fps in the MP4 mode playing back on both computer and HD Samsung CTV. I can record at 60fps in FHD mode but the 4k has the edge for sharpness and detail.
I had great problems finding a player that could playback 4k smoothly without stuttering. VLC and many other players even with the tweaks found on YouTube did not work for me. Finally found that the Microsoft Film & TV app was the perfect answer. What do you use to playback your 4k video?
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  #22  
Old 25-02-18
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Re: Anyone explored camera drones?

That's interesting, Ron The cost of drones has really come down now. You can get a GPS quadcopter with auto-hover and return to home, with a simple camera, for under £50 (Chinese supplier) like the Hubsan H502E. See:


I'm still getting to grips with video. Clearly, the shutter speed is very important. If the shutter speed is too high then you will get more discrimination of the individual frames. If you get the shutter speed down you introduce some motion blur and this can smooth the action. With 4K the sharpness of the frames seems to accentuate the problem. With 60fps the high shutter speed choppiness seems to be fixed. Of course Hollywood goes for 24fps and they get smooth results, so there has to be an answer in there somewhere!

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Last edited by Ian; 25-02-18 at 07:39 PM.
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  #23  
Old 25-02-18
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Re: Anyone explored camera drones?

Here is a little bit of 4k from my FZ330 at 24fps. Any movement you see is down to me not having a steady hand. I can only use full stabilisation in the HD mode. One of two limitations on my camera, the other is level shot. I also find the time taken to upload to YouTube far to long with 4k. I'm looking at purchasing a Panasonic or Sony 4k camcorder very soon.
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Last edited by Rodbender; 25-02-18 at 09:09 PM.
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  #24  
Old 25-02-18
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Re: Anyone explored camera drones?

Thanks for the informative input, Ron.

What you say about 4K and fps is interesting. Your video is good.

Far better than any I have taken with old video cams.
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  #25  
Old 26-02-18
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Re: Anyone explored camera drones?

Been doing some learning Ideally the shutter speed of the camera should be double that of the frame rate to ensure natural looking motion, so at 24 fps you should have a shutter speed of 1/48th, 30 fps - 1/60th, etc. The problem with the Yi action cams and, I suspect, most action cams, is that I can't see how you can manually set the shutter speed. You can usually do this with stills cameras that have video modes, though.

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  #26  
Old 26-02-18
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Re: Anyone explored camera drones?

Quote:
Originally Posted by Ian View Post
Been doing some learning Ideally the shutter speed of the camera should be double that of the frame rate to ensure natural looking motion, so at 24 fps you should have a shutter speed of 1/48th, 30 fps - 1/60th, etc. The problem with the Yi action cams and, I suspect, most action cams, is that I can't see how you can manually set the shutter speed. You can usually do this with stills cameras that have video modes, though.

Ian
Yes that is very true. The old cine cameras had a rotating disk shutter which was devided up very much like a fan with 25 blades and 25 gaps of equal size. As this disk rotated at one revolution per minute that equates to 25 exposures of 1/50th second. So it would seem the old technology still applies.
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  #27  
Old 26-02-18
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Re: Anyone explored camera drones?

It could boil down to messing around with ISO settings and ND filters to moderate the shutter speed!

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  #28  
Old 26-02-18
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Re: Anyone explored camera drones?

Having never really played about with video. I am learning more and more here.
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  #29  
Old 26-02-18
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Re: Anyone explored camera drones?

Quote:
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Having never really played about with video. I am learning more and more here.
Me too Garry. This new video game is a far cry from when I videoed 6 weddings in a year and was limited to mini DVD tapes. Editing then was a nightmare as we did not have the computer software available today. I have always enjoyed the editing side of video making and have played around a lot with my phones video. I'm now very close to purchasing a 4k camcorder. Actually I went to Jessops to day and they do not stock camcorders in their shops. You have to order online.
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  #30  
Old 26-02-18
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Re: Anyone explored camera drones?

Videos in posts are now working again

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