HID question

"Nige" <nigel@nospamhamlinawards.fsnet.co.uk> wrote:

>Deos a HID provide lots of brightness in clear water?
>Had an LED which was rubbish, and wondered if I'd suffer the same with HID?

The 10 Watt HID lights (based on the Welch Allyn or Brightstar 10 Watt
bulbs are not that bright (500 lumens). You will need either
- 21 Watt Brightstar - 1100 lumen (Green Force, Barry Miller)
- 18 Watt Welch Allyn - 1300 lumen (Sartec, Halcyon, Dive Rite)
- 35/50 Watt D2S - 3500 to 5000 lumen (Hartenberger, Metalsub, Treble
light)

The typical led-light based on 3 luxeon leds put out a maximum of 250
to 300 lumen...

These data is for the bulb, the ballast also consumes a bit power -
some ballasts are more efficient than others.

I would suggest buying either something on the basis of a 21 Watt
Brightstar or on the basis of a D2S bulb. The Welch Allyn bulbs are
VERY sensitive to shock.

On a side note: I have a used HID Green Force Impact 100 umbilical for
sale right now, and it puts out a lot of light, much more than a led
light. Output is 1100 lumen, which is comparable with a standard 75
Watt halogen bulb - but with only a 30 watt consumption. (Manufacturer
claims 100 Watt equivalent but that seems more wishfull thinking than
real data).

Best regards

Steven Tolleneer

"Nige" <nigel@nospamhamlinawards.fsnet.co.uk> wrote:

>Deos a HID provide lots of brightness in clear water?
>Had an LED which was rubbish, and wondered if I'd suffer the same with HID?

The 10 Watt HID lights (based on the Welch Allyn or Brightstar 10 Watt
bulbs are not that bright (500 lumens). You will need either
- 21 Watt Brightstar - 1100 lumen (Green Force, Barry Miller)
- 18 Watt Welch Allyn - 1300 lumen (Sartec, Halcyon, Dive Rite)
- 35/50 Watt D2S - 3500 to 5000 lumen (Hartenberger, Metalsub, Treble
light)

The typical led-light based on 3 luxeon leds put out a maximum of 250
to 300 lumen...

These data is for the bulb, the ballast also consumes a bit power -
some ballasts are more efficient than others.

I would suggest buying either something on the basis of a 21 Watt
Brightstar or on the basis of a D2S bulb. The Welch Allyn bulbs are
VERY sensitive to shock.

On a side note: I have a used HID Green Force Impact 100 umbilical for
sale right now, and it puts out a lot of light, much more than a led
light. Output is 1100 lumen, which is comparable with a standard 75
Watt halogen bulb - but with only a 30 watt consumption. (Manufacturer
claims 100 Watt equivalent but that seems more wishfull thinking than
real data).

Best regards

Steven Tolleneer

"Nige" <nigel@nospamhamlinawards.fsnet.co.uk> wrote:

>Deos a HID provide lots of brightness in clear water?
>Had an LED which was rubbish, and wondered if I'd suffer the same with HID?

The 10 Watt HID lights (based on the Welch Allyn or Brightstar 10 Watt
bulbs are not that bright (500 lumens). You will need either
- 21 Watt Brightstar - 1100 lumen (Green Force, Barry Miller)
- 18 Watt Welch Allyn - 1300 lumen (Sartec, Halcyon, Dive Rite)
- 35/50 Watt D2S - 3500 to 5000 lumen (Hartenberger, Metalsub, Treble
light)

The typical led-light based on 3 luxeon leds put out a maximum of 250
to 300 lumen...

These data is for the bulb, the ballast also consumes a bit power -
some ballasts are more efficient than others.

I would suggest buying either something on the basis of a 21 Watt
Brightstar or on the basis of a D2S bulb. The Welch Allyn bulbs are
VERY sensitive to shock.

On a side note: I have a used HID Green Force Impact 100 umbilical for
sale right now, and it puts out a lot of light, much more than a led
light. Output is 1100 lumen, which is comparable with a standard 75
Watt halogen bulb - but with only a 30 watt consumption. (Manufacturer
claims 100 Watt equivalent but that seems more wishfull thinking than
real data).

Best regards

Steven Tolleneer

"Nige" <nigel@nospamhamlinawards.fsnet.co.uk> wrote:

>Deos a HID provide lots of brightness in clear water?
>Had an LED which was rubbish, and wondered if I'd suffer the same with HID?

The 10 Watt HID lights (based on the Welch Allyn or Brightstar 10 Watt
bulbs are not that bright (500 lumens). You will need either
- 21 Watt Brightstar - 1100 lumen (Green Force, Barry Miller)
- 18 Watt Welch Allyn - 1300 lumen (Sartec, Halcyon, Dive Rite)
- 35/50 Watt D2S - 3500 to 5000 lumen (Hartenberger, Metalsub, Treble
light)

The typical led-light based on 3 luxeon leds put out a maximum of 250
to 300 lumen...

These data is for the bulb, the ballast also consumes a bit power -
some ballasts are more efficient than others.

I would suggest buying either something on the basis of a 21 Watt
Brightstar or on the basis of a D2S bulb. The Welch Allyn bulbs are
VERY sensitive to shock.

On a side note: I have a used HID Green Force Impact 100 umbilical for
sale right now, and it puts out a lot of light, much more than a led
light. Output is 1100 lumen, which is comparable with a standard 75
Watt halogen bulb - but with only a 30 watt consumption. (Manufacturer
claims 100 Watt equivalent but that seems more wishfull thinking than
real data).

Best regards

Steven Tolleneer

"Nige" <nigel@nospamhamlinawards.fsnet.co.uk> wrote:

>Deos a HID provide lots of brightness in clear water?
>Had an LED which was rubbish, and wondered if I'd suffer the same with HID?

The 10 Watt HID lights (based on the Welch Allyn or Brightstar 10 Watt
bulbs are not that bright (500 lumens). You will need either
- 21 Watt Brightstar - 1100 lumen (Green Force, Barry Miller)
- 18 Watt Welch Allyn - 1300 lumen (Sartec, Halcyon, Dive Rite)
- 35/50 Watt D2S - 3500 to 5000 lumen (Hartenberger, Metalsub, Treble
light)

The typical led-light based on 3 luxeon leds put out a maximum of 250
to 300 lumen...

These data is for the bulb, the ballast also consumes a bit power -
some ballasts are more efficient than others.

I would suggest buying either something on the basis of a 21 Watt
Brightstar or on the basis of a D2S bulb. The Welch Allyn bulbs are
VERY sensitive to shock.

On a side note: I have a used HID Green Force Impact 100 umbilical for
sale right now, and it puts out a lot of light, much more than a led
light. Output is 1100 lumen, which is comparable with a standard 75
Watt halogen bulb - but with only a 30 watt consumption. (Manufacturer
claims 100 Watt equivalent but that seems more wishfull thinking than
real data).

Best regards

Steven Tolleneer

> Deos a HID provide lots of brightness in clear water?
> Had an LED which was rubbish, and wondered if I'd suffer the same with
> HID?

Other than what's already been said, bear in mind that a HID / LED light is
a lot more pure than a traditional halogen light. Because of that, you may
not notice the yellow dot you'll be used to seeing because its much closer
in colour to sunlight, so using them in clear water during the day, when
it's already light, you might not see much of an effect (and of course if
you can already see then you don't need the torch on anyway). Once you get
into holes or night diving, then you will of course notice the benefits of
the light...!

About LEDs, some are better than others. You may have one of the earlier
ones which just has a standard LED (or probably anything up to 10) just
stuck in a waterproof tube, with little focus. The more recent ones use
fewer much more powerful LEDs (luxeon or something...) that have much more
focus around the individual LEDs and therefore you would notice that more
than the traditional types. Of course they are still nowhere near as
powerful as most HID lamps, but good as backup.

David

> Deos a HID provide lots of brightness in clear water?
> Had an LED which was rubbish, and wondered if I'd suffer the same with
> HID?

Other than what's already been said, bear in mind that a HID / LED light is
a lot more pure than a traditional halogen light. Because of that, you may
not notice the yellow dot you'll be used to seeing because its much closer
in colour to sunlight, so using them in clear water during the day, when
it's already light, you might not see much of an effect (and of course if
you can already see then you don't need the torch on anyway). Once you get
into holes or night diving, then you will of course notice the benefits of
the light...!

About LEDs, some are better than others. You may have one of the earlier
ones which just has a standard LED (or probably anything up to 10) just
stuck in a waterproof tube, with little focus. The more recent ones use
fewer much more powerful LEDs (luxeon or something...) that have much more
focus around the individual LEDs and therefore you would notice that more
than the traditional types. Of course they are still nowhere near as
powerful as most HID lamps, but good as backup.

David

> Deos a HID provide lots of brightness in clear water?
> Had an LED which was rubbish, and wondered if I'd suffer the same with
> HID?

Other than what's already been said, bear in mind that a HID / LED light is
a lot more pure than a traditional halogen light. Because of that, you may
not notice the yellow dot you'll be used to seeing because its much closer
in colour to sunlight, so using them in clear water during the day, when
it's already light, you might not see much of an effect (and of course if
you can already see then you don't need the torch on anyway). Once you get
into holes or night diving, then you will of course notice the benefits of
the light...!

About LEDs, some are better than others. You may have one of the earlier
ones which just has a standard LED (or probably anything up to 10) just
stuck in a waterproof tube, with little focus. The more recent ones use
fewer much more powerful LEDs (luxeon or something...) that have much more
focus around the individual LEDs and therefore you would notice that more
than the traditional types. Of course they are still nowhere near as
powerful as most HID lamps, but good as backup.

David

> Deos a HID provide lots of brightness in clear water?
> Had an LED which was rubbish, and wondered if I'd suffer the same with
> HID?

Other than what's already been said, bear in mind that a HID / LED light is
a lot more pure than a traditional halogen light. Because of that, you may
not notice the yellow dot you'll be used to seeing because its much closer
in colour to sunlight, so using them in clear water during the day, when
it's already light, you might not see much of an effect (and of course if
you can already see then you don't need the torch on anyway). Once you get
into holes or night diving, then you will of course notice the benefits of
the light...!

About LEDs, some are better than others. You may have one of the earlier
ones which just has a standard LED (or probably anything up to 10) just
stuck in a waterproof tube, with little focus. The more recent ones use
fewer much more powerful LEDs (luxeon or something...) that have much more
focus around the individual LEDs and therefore you would notice that more
than the traditional types. Of course they are still nowhere near as
powerful as most HID lamps, but good as backup.

David

> Deos a HID provide lots of brightness in clear water?
> Had an LED which was rubbish, and wondered if I'd suffer the same with
> HID?

Other than what's already been said, bear in mind that a HID / LED light is
a lot more pure than a traditional halogen light. Because of that, you may
not notice the yellow dot you'll be used to seeing because its much closer
in colour to sunlight, so using them in clear water during the day, when
it's already light, you might not see much of an effect (and of course if
you can already see then you don't need the torch on anyway). Once you get
into holes or night diving, then you will of course notice the benefits of
the light...!

About LEDs, some are better than others. You may have one of the earlier
ones which just has a standard LED (or probably anything up to 10) just
stuck in a waterproof tube, with little focus. The more recent ones use
fewer much more powerful LEDs (luxeon or something...) that have much more
focus around the individual LEDs and therefore you would notice that more
than the traditional types. Of course they are still nowhere near as
powerful as most HID lamps, but good as backup.

David