PatR
Premium Pilot
I wonder what the maximum weight is the gimbal can effectively handle? Add a filter, perhaps an adapter ring, and a hood and although they are light the combination could be excessive.
Oh, I really like what I see here! The video is so crisp, clean and sharp, corner to corner. Also, no shimmering textures, YuKay! Judging by the slight motion blur during lumpy pans, I suspect this pilot used an ND filter to get the shutter speed and ISO down.4k/60 footage of a sunny Greek bay with lumpy pans, from FrontierNG…
This is a camera drone. Good video means not flying very fast, therefore, less windage.Put a sun shade on these cameras, point them to the side and fly forward at speed and you prolly won’t have a happy gimbal. The sun shade will become an exaggerated wing with an upwards lift vector.
Nice job, Merhlin. I find the slow cross-fades confusing and distracting, especially in such a short clip and when transitioning between scenes which are similar. I would reduce the fade time a lot - and don't ignore the simple cut.
The moiré on the bricks (and on the tennis court pan at 1:20) isn't your fault but you might find on a re-shoot that it disappears if you approach at a slightly different angle. Lens filters can help with some cameras but I don't know if those available for the C23 claim to reduce these artifacts. There's a trade-off with filters though as they tend to soften the image when you may want the sharpest video possible. You could also improve the moiré in post, effectively by softening the area digitally without softening the entire scene.
You can get a lot of color/exposure/sharpening correction done in the basic PD16. I have not tried ColorDirector. It appears to go way beyond my usual editing skills or needs. Have fun with your editing and keep us posted.I'm confused, as I don't always see my responses show-up to some of the comments posted. But I digress.
I stated in my first response to you that I would address editing color, clarity, exposure, etc. in LR and I was mistaken because LR can't play or edit video. My bad. So I'll be experimenting with CyberLink's PowerDirector 16 software for that purpose, as I think it has that capacity as well. I may share those results if it makes a notable improvement.
I think this shows the C23 sharpness with close objects (<50ft) really well, edge to- edge. There is a drop off in sharpness which I think may be partially resolved if Yuneec would kick the focus up from 3ft to ~ to 10ft to ~ .Oh, I really like what I see here! The video is so crisp, clean and sharp, corner to corner. Also, no shimmering textures, YuKay! Judging by the slight motion blur during lumpy pans, I suspect this pilot used an ND filter to get the shutter speed and ISO down.
Thank you for posting.4k/60 footage of a sunny Greek bay with lumpy pans, from FrontierNG…
I could see that some of the pans were intentionally jerky but we have seen quite a lot of stuttering pans from other uploads and I think they are more prevalent in 4k/60 video which places the maximum strain on the capture card. They seem to be exacerbated if the H Plus is flying at speed and/or if the camera is panning quickly since this results in a high number of new pixels in every frame - again stressing the sensor and card.Thank you for posting.
The video was just a simple test after downgrading the gimbal code to v20180507 in order to eliminate the jello caused by v20180801 (even build 748 that Yuneec Europe sent me had jello, although less than build 743). There was also some strong wind (4-5 BF with good powerful gusts) but the gimbal held up pretty nice, considering all the (on purpose) crazy panning and flying.
Getting more comfortable with TH+ day by day, although I am a bit worried about the reported incidents of the drone stopping the motors mid-air...
I'm not sure what you mean by a "smooth fast pan".But if anyone has managed to capture a smooth fast pan at 4k/60, I would like to see it.
I'm not sure myself as I don't know the actual speeds involved. But I would hope there's a way to capture smooth video from a pan at the maximum panning speed, whatever that is - unless the manual says otherwise. If not, what is the point of building a gimbal that rotates at a useless speed?I'm not sure what you mean by a "smooth fast pan".
Imagine rotating the camera rapidly at, say, 60-deg per second. At 60 frames per second, that is 1-deg/frame. For an object 100 feet away, that would mean about 1.7 feet of image movement PER FRAME. Under the best of conditions, that would not appear smooth. Imagine what that looks like at 30 or 24 fps.
Smoothness of playback from YouTube is also largely dependent upon the connection speed. If you right-click the video while playing and select "stats for nerds", you will see Host and Connection Speed. I've found that if the connection speed is below about 30Mbps, a 4K60fps video will not play smoothly. When the connection speed is over 40Mbps, the buffering is adequate for smooth playback. Also, if the connection speed is too slow, copy the URL, close that YT window, reopen YT window and paste the URL. This will get you a different "Host" and the connection speed will probably be higher. Apparently, all Hosts are not created equal.
That's neat comparison video using a camera I'm familiar with.I'm not sure myself as I don't know the actual speeds involved. But I would hope there's a way to capture smooth video from a pan at the maximum panning speed, whatever that is - unless the manual says otherwise. If not, what is the point of building a gimbal that rotates at a useless speed?
However, I'm well aware that panning artifacts are a potential issue with all cameras, including pro cinema cameras. Red say that in order to minimise artifacts, the maximum panning speed should be such that an object on one side of the frame takes at least 7 seconds to disappear out of view on the opposite side of the frame (at 24fps - with adjustments for higher frame rates)…and that this rule applies to all cameras, lenses and sensor sizes.
But they also say that a high frame rate such as 60fps is a good way to reduce artifacts at high camera speed - and that isn't what I am seeing generally in the H Plus YouTube videos. My impression is that videos filmed at lower frame rates (25-30fps) contain fewer artifacts. That being so, the likely culprit is the UHS interface and the capture limitations of the best SD cards available for H Plus.
There's an interesting comparison of identical pans at varying camera speed at 60fps and 24fps, using a Sony AX100. This looks like conclusive evidence that pans at all speeds are smoother and cleaner at 60fps than at 24fps - and yet I haven't seen this to be the case with the H Plus, presumably due to its capture limitations.
Often, that's true. Even with a pretty capable rig (5k monitor, 3.4 GHz Intel Core i5 processor, Radeon Pro 570 4096 MB graphics chip, 4TB SSD internal drive, 40MB RAM, Mac OS High Sierra, a sustained 45Mbps ethernet-wired internet connection and new prescription glasses from Specsavers) many 4k and/or 60fps YouTube videos don't play optimally on the first time of asking and I have to reload to get the benefit of the cached data to view them properly. If available, I download the video file to play locally of course - where playback is always smoother.If you see jitter or jerkiness, it's probably not the video but something in your system or internet connection.
Most likely the stuttering is caused by recording at 30fps and then rendering out the video at say 25fps, I made that mistake lol and wondered why my outputted footage was jerky whilst the original footage was fine lolConstruction site at 1080/30 by Akoni Lamparilya. Great detail but, for me, stuttering throughout for some reason (not camera speed).
And a "manual map" of the same site, which is not something I understand:
Most likely the stuttering is caused by recording at 30fps and then rendering out the video at say 25fps
I get your point. How do we improve the viewer experience?Often, that's true. Even with a pretty capable rig (5k monitor, 3.4 GHz Intel Core i5 processor, Radeon Pro 570 4096 MB graphics chip, 4TB SSD internal drive, 40MB RAM, Mac OS High Sierra, a sustained 45Mbps ethernet-wired internet connection and new prescription glasses from Specsavers) many 4k and/or 60fps YouTube videos don't play optimally on the first time of asking and I have to reload to get the benefit of the cached data to view them properly. If available, I download the video file to play locally of course - where playback is always smoother.
On the Robert Fekete video you linked to, I got approx 150 dropped frames on the first playthrough, reducing to 40 on the second and under 10 on the third. On first play, the pans stuttered a lot but this improved with each repeat play. Hence I always view online videos at least twice - although presumably most people wouldn't bother.
I also usually view in two browsers nowadays: Chrome (with hardware acceleration switched on) and Safari (which can't play VP9 4k YouTube videos). At 1080p in the Default window, Safari gives me the smoothest playback (after a choppy first run) and even the fast pan at 1:25 looks OK. But increasing the viewing window to Theater Mode introduces slight choppiness. Chrome will eventually play 4k/60 video fairly smoothly but only after several run-throughs; and its rendering of 1080p is always slightly inferior to Safari's.
But in the case of this video, the data is obviously there as it plays back fine at 1080p in Safari so the H Plus is performing better than it appears on first sight. So, yes, my viewing experience, like everyone's, is shaped by numerous variables unrelated to the C23 - which is why I go the extra mile to eliminate as many as possible. Your experience is presumably based on a more capable rig than mine - which makes it more valid when assessing the C23 but less valid when assessing the typical user experience as I would guess that 90% of viewers are using rigs with a lower spec.
Also, your definition of smooth may be different from the next man's. I have already discovered that my anti-aliasing tolerance level is much lower than most people's.
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