Nigel S

Lives in United Kingdom United Kingdom
Joined on May 19, 2011

Comments

Total: 14, showing: 1 – 14
In reply to:

NickyB66: 100% quieter, then that would be impressive.

Most of the motor noise is high frequency and only audible at close range, so unless you fly at close range, or indoors, it will be the propellers that make most of the difference. The propeller mounts are the same on all P4, so they will fit, although there seems to be no official confirmation that the new props are OK for use on the original P4.

Link | Posted on May 11, 2018 at 09:54 UTC
In reply to:

IamJF: 60% quieter ... what an incredible nonsense. You publish that?
-10dB are HALF the PERCEIVED loudness (-6dB half the sound pressure level - but our brain receives different). We have here -4dB, that's noticeable, but not a lot.
So if -10 is 50%, -4 would be 20% less noise. (Noise is something we perceive - otherwise it's sound pressure level)

So many marketing people doesn't have even a little idea of what they talk about - it's a pain.

Sorry, had a bad day 🤓

I think it is sound pressure level that is the important figure though, what matters is not how loud it is, but if it can it be heard over the background noise. The P4 standard is already very quiet if flown beside a fast flowing river, or on a rocky beach in a storm, but very noisy if flown in the mountains, miles from any roads on a perfectly calm day.

Link | Posted on May 11, 2018 at 09:47 UTC
In reply to:

justmeMN: "GoPro still dominates in the US action camera market..." -DPR

(sarcasm) That's a surprise. I thought that GoPro cameras were overtaken by the wildly popular Nikon KeyMission line.

If they actually dominated then they wouldn't need to reduce the prices, obviously it is not true!

Presumably they don't count all the cheap Chinese action cameras, that often get imported directly by the customers but probably total more sales than GoPro? Or the more expensive Chinese action cameras like the Yi 4K+ which we know are popular and often considered better quality than the GoPros?

Link | Posted on May 4, 2018 at 20:34 UTC
On article Report: Chinese company Xiaomi may purchase GoPro (93 comments in total)
In reply to:

Corkcampbell: They're just buying the name as their own offerings are better. But, it's probably a good move, depending on the price.

Yi has nothing to do with Xiaomi, except that Xiaomi sold Yi's first action camera as the "Xiaomi Yi", since then there has been no link.

Look at the Xiaomi Mijia Mini - fantastic value for money at a sensible price to sell large numbers.

Link | Posted on Apr 14, 2018 at 20:31 UTC
In reply to:

ozturert: 250USD? Horribly small sensor, really bad image quality, 3-hour battery life...
Should probably cost 50USD at most.

The Chinese have been making them for years, all the Gitup range have a motion detection setting so that they start recording when something significant moves within the image and stop when nothing is moving. The latest Gitup G3 will record FHD at 60fps with the same sensor as a GoPro Hero 5, slightly better quality, with image stabilisation and digital zoom for just $100! They even have a accelerator trigger (G-Sensor) so that they can start recording on physical movement or vibration.

Link | Posted on Jan 30, 2018 at 13:40 UTC
In reply to:

Tequila MockingjayBird: so no gyroscopes and no self leveling mechanisms?

The gyrocopes are not actually solid state, they are actual gyroscopes that move, microscopic ones and they vibrate rather than spin but they do move. The gyroscopic forces generated are only enough for the inbuilt sensors to sense, they don't stabilise the quadcopter directly.

There are also gyroscopic forces from the spinning propellers that do stabilise the aircraft, and i suspect provide most of the force against you if you or the wind tries to intentionally tip it over. Also, for a DJI Phantom at least, if it looses power in mid air and falls, it will spin as it falls creating gyroscopic forces that keep it upright so that normally it will land on it's feet even without any power.

Link | Posted on Jan 26, 2018 at 16:22 UTC
On article DJI Mavic Air: What you need to know (136 comments in total)
In reply to:

princecody: I was thinking about buying a DJI drone til stories online said it was sending drone data to Chinese government. Is there any Canada drones similar? Your thoughts?

Why would the Chinese government be interested in your drone data? The DJI software does send data to the DJI cloud servers in China, but only if you ask it to do so, which many owners do since it is quite useful. You can also share your photos and videos if you choose to do so. DJI say they don't share what you share with them with any government unless required to do so by law enforcement, but even then they can only do so if you choose to share the data with them, they can't share data they don't have and we would all notice if they started stealing huge video files!

Link | Posted on Jan 24, 2018 at 20:26 UTC
In reply to:

PhotoKhan: "The upcoming law may also include a ban on operating drones near airports or above 400ft."

It is already unlawful to fly a drone above 400ft and near airports or airfields in most countries in Europe, as it already is in my own and in the UK:

http://dronesafe.uk/drone-code/

I know this is always a topic that attracts web traffic but please, try to be more informed before writing pieces on the subject.

Provision 94, paragraph 4 starts off: "The person in charge of a small unmanned aircraft which has a mass of more than 7kg...". Most consumer drones, including mine weigh a lot less than that so the provision does not apply! And I don't think I have ever flown in anything but Class G airspace anyway which is uncontrolled, the majority of UK airspace is Class G so it is not possible to obtain permission even if you want to.

Link | Posted on Nov 28, 2017 at 18:19 UTC
In reply to:

PhotoKhan: "The upcoming law may also include a ban on operating drones near airports or above 400ft."

It is already unlawful to fly a drone above 400ft and near airports or airfields in most countries in Europe, as it already is in my own and in the UK:

http://dronesafe.uk/drone-code/

I know this is always a topic that attracts web traffic but please, try to be more informed before writing pieces on the subject.

To confirm that this is a correct interpretation of the rules, you can look at some of the airprox investigation reports, eg 2017137 states "Cause: The Board agreed that although the drone was being flown near the practical VLOS limit, it was entitled to be there and that the incident was best described as a conflict in
Class G.", it was at 1500ft, some go as high as 1800ft and are still accepted: https://www.airproxboard.org.uk/uploadedFiles/Content/Standard_content/Airprox_analysis/2017/20170913_SummarySheet_Sep_v2.pdf

Link | Posted on Nov 28, 2017 at 14:31 UTC
In reply to:

PhotoKhan: "The upcoming law may also include a ban on operating drones near airports or above 400ft."

It is already unlawful to fly a drone above 400ft and near airports or airfields in most countries in Europe, as it already is in my own and in the UK:

http://dronesafe.uk/drone-code/

I know this is always a topic that attracts web traffic but please, try to be more informed before writing pieces on the subject.

The UK drone code is a guide to safe flying, not the law. The legal height limit depends on the type of drone, what rules you are following, and what permission you have for the flight.

Under FPV flight rules the current limit is 1000ft, but you need to know and use the rest of the FPV rules before you use that limit.

As for airports, it is currently too complicated for an untrained amateur drone pilot and is different for different airports, a much simpler rule for non-commercial drones flying below 400ft that applies to all airports makes a lot of sense.

Link | Posted on Nov 27, 2017 at 22:00 UTC
In reply to:

Lee Jay: Every single GoPro remains the wrong shape for me. I'm going to be moving them through the air at 100mph on a model airplane so a big rectangular box with all that frontal area is a non-starter. I need one shaped like a Mobius but with the ability to remotely trigger 12+MP still captures. I also need a narrow-angle option like 60 degrees instead of these 120-170 degree devices.

Still can't find exactly what I need so I still haven't bought anything.

The Gitup F1 meets that spec, and is intended for that purpose including photos via the aircraft remote control, except that the narrow lens option is 90 not 60 degrees and it's not available for another week or two: http://www.gitup.com/home/78-gitup-f1-4k-wifi-action-camera.html
(And it has a 16:9 sensor so photos are 4K, not 12MP)

Link | Posted on Sep 29, 2017 at 07:56 UTC
On article DJI launches Phantom 4 Advanced drone (66 comments in total)
In reply to:

maxnimo: Hard to believe that an electric helicopter can fly 30 minutes on a charge. Simply amazing. This means that an electric airplane should be able to fly for at least 2 hours, since airplanes are at least 4 times more efficient than helicopters.

What's more surprising is that it can do it while traveling at 30mph, it generates extra lift at that speed relative to hovering. My P4 made a 3 mile round trip the other day including a 46mph flight to the target location, several minutes hovering to take some photos and an autonomous return flight, and on landing back at base the battery was still at 57% full. Changing batteries takes 5 seconds.

Link | Posted on Apr 19, 2017 at 15:32 UTC
In reply to:

blackcoffee17: Why no one makes a 1080p action camera with 2 megapixel sensor and huge pixels for amazing low light? Instead of 10MP on on tiny sensor.
I am sure would be a market for it.

Gitup Git1 - Native 1080 16:9 Sony IMX322 sensor, very nice in low light:
http://www.gitup.com/home/8-gitup-git1-action-camera-pro-packing.html

Same sensor is used in a lot of dashcams because of low motion blur at night.

Link | Posted on Dec 22, 2016 at 21:44 UTC
On article Just posted: Our in-depth Olympus E-PL3 review (45 comments in total)
In reply to:

sbjaerum: Why can't sensor shift IS be used during video recording?

"Are there other reasons?"

One very big one is noise - you don't want IS sound on the soundtrack.

Also it is not really needed, at a frame rate of 60/s the exposure time for each frame must be less than 1/60th and so will have very little motion blur anyway. What is needed is to align the frames (remove the movement between frames) and that is best done in software.

Link | Posted on Sep 20, 2011 at 21:03 UTC
Total: 14, showing: 1 – 14