LED lights over Incandescent.

[mustafa bigen]

What is this fascination with LED light?

Personally every set I’ve ever used are at best only equal in brightness to a halogen incandescent and the amount of variable control is next to none. The direction and beam of the light is intense which only increases back scatter and worsens visibility. Ideally top frame lights creating a general ambient glow is the best setup for sit cams and you just can’t do this with LED’s.

In my opinion LED’s are goochy gadgetry that totally miss the point and are a step back in my opinion. Bring back Ros incandescent halogens, by far more superior and fit for purpose.

Has anybody actually used LEDs and found them better than original lights they replaced??

[gr8]

Yes. I think they are the most economical at the moment 😉

[Ray Shields]

LEDs use less power and last longer than halogen, can cope with bangs without blowing etc.

This is their main advantages. Hence the fascination 🙂 I wouldn’t say they are better light-wise, but if they are at least equal, then the above two reasons give them an advantage over traditional lights.

[Scott Beveridge]

There’s also the advantage of size re: more watts per packages of same / similar size as q-halo lights.

[mustafa bigen]

Well maybe it’s just me having my first senior moment. But I’m still not convinced lol.

[Benny Edelman]

LED is useful when you have limited Amps on the ROV and the client requires more light.
A point to remember, some LEDs have water temperature limitations. E.g. Bowtech 6000 keeps cutting off at water temperature above 25 celsius, not very useful while working in Malaysia at depth of 50m.
Better check with the manufacturer prior to ordering as these are expensive lights.

[Scott Beveridge]

Well maybe it’s just me having my first senior moment. But I’m still not convinced lol.

From someone whose had multitudes of senior moments…. LEDS are pretty sharp.

[T-Boy]

it’s not a fascination, merely a trend. LED’s are as we know are everywhere. Tailamps and headlights on cars, Bicycles, torches etc.

From my experiences working with conventional filament lamps, HID’s and LED’s, I would say that they all lend theirselves well depending on the type of job and environment.

Take for example working with a large amount of suspended sediment. LED’s tend to receive a lot of backscatter that appears as a blue hue. Rohs, because they are emit a yellow light when down low seem do better. The reverse can also be said when the vis is good.
Not tried the dimmable LED lights yet though, maybe this addresses this issue..
I guess this has something to do with the light ‘temperature’?

Also, high power LED’s produce quite a lot of heat that needs to be dissapated.

They are the way it will go, by virtue of the fact that they are robust and will last 20-30K hours without a changeout, great.

[luckyjim37]

cost is one of the biggest factors. We do a lot of HD camera work which is very light hungry. I have two HMI lights which cost a small fortune. I can now get two LED lights for the price of one HMI. Not to mention the blue tinge HMI lights cause which with LED’s can be removed by tweaking the levels within the LED light.

We have been working with Cathix Ocean on LED lights recently they have the same dimming ability as Halogens.

The range they offer is quite good. Off the top of my head they have just brought or are about to bring four models to market. They range from Halogen replacements up to the 22000 lumen HMI replacements I need.

They also do some really good divers lights.

[DANFROV]

Jim I hear you mention CATHX Ocean

They visited me here in Aberdeen, I was very impressed.
Especially if they come out with the strobing / Frequency shifting lights in 3000 metre rated lights they were talking about.

http://www.cathxocean.com

DanFrov

[Che]

have twice had an issue wit the LED’s causing degredation on my camera (colour) picture – manifests itself as a flickering of camera picture. It looks like a frequency issue. reverted to incandescents and problem vanished.

Ended up using a mixture of both – Led’s for ambience and incandescents for camera specific lighting.

But for cost and longevity, canna beat the LED’s

[Brian Thomson]

I personally like using a mixture of Led and Ros lights. Obviously the Ros lights give you a greater control over the light intensity but LED’s have their place. However with that being said I still prefer the Ros lights generally.

[CortezLoetz]

LED’s tend to receive a lot of backscatter that appears as a blue hue. Rohs, because they are emit a yellow light when down low seem do better. The reverse can also be said when the vis is good.

______________________________
LED Fluorescent
led ceiling lights
led strip

[DANFROV]

The backscatter is dependent on the angle you view the light to Camera position. The further away from the line of sight of the camera the better.

DanFrov

[Author]

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