LED lights over Incandescent.

This topic has 13 replies, 11 voices, and was last updated 11 years, 11 months ago by DANFROV.

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January 23, 2011 at 3:43 pm #4035

mustafa bigen
Participant

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??

January 23, 2011 at 4:12 pm #30122

gr8
Participant

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

January 23, 2011 at 8:59 pm #30123

Ray Shields
Participant

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.

January 23, 2011 at 11:45 pm #30124

Scott Beveridge
Participant

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

January 24, 2011 at 12:54 pm #30125

mustafa bigen
Participant

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

January 24, 2011 at 4:15 pm #30126

Benny Edelman
Participant

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.

January 24, 2011 at 6:15 pm #30127

Scott Beveridge
Participant

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.

January 25, 2011 at 3:52 am #30128

T-Boy
Participant

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.

January 27, 2011 at 11:15 pm #30121

luckyjim37
Participant

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.

May 30, 2012 at 1:11 pm #30130

DANFROV
Keymaster

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

May 30, 2012 at 5:44 pm #30129

Che
Participant

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

June 5, 2012 at 2:59 am #30131

Brian Thomson
Participant

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.

October 10, 2012 at 3:47 am #30132

CortezLoetz
Participant

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.

______________________________
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October 10, 2012 at 8:41 am #30133

DANFROV
Keymaster

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
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