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Any thoughts about this light?


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#41 Davide DB

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Posted 14 November 2012 - 02:02 PM

Hi Steve,

Thanks for thinking of,

I'm really happy with my FIX. Actually I would be interested (I wish I have the money Posted Image ) in a high power light manned by a diver/model. Recently I had the opportunity to try a Halcyon 200W HMI and it's a game changer for filming wrecks/caves. You are opened to a lot of different choices like in that video. Of course such light doesn't find use in a medium or closeup shot unless preparing a fried shrimps dish Posted Image
IMHO Nowadays I would never buy a HMI light. Too fragile and too expensive spare parts.

Byeeee
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#42 r4e

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Posted 14 November 2012 - 09:47 PM

Above 300 watt/hr ( ballpark ) battery I think we can not bring in on the airline.
http://www.bobatkins...strictions.html

You are correct about the 300 Wh limit for air travel within U.S. However, the text behind the link is slightly misleading.
A more accurate description can be found here:
http://safetravel.do...arger_batt.html

I don't know the global rule but I wanted to buy for a friend a scooter from USA which the battery pack can not be shipped to OUTSIDE USA regardless of mode of transport, while it is only 300 Watt/hr.

Here in Europe, air travel is regulated by IATA. IATA seems to cover most of the globe: 240 airlines from 118 countries and 84% of total global air traffic. Unfortunately for us, IATA sets the limits lower:

"2.3.3.2
Lithium ion batteries exceeding a watt-hour rating of 100 Wh but not exceeding 160 Wh may be carried as spare batteries in carry on baggage, or in equipment in either checked or carry on baggage. No more than two individually protected spare batteries per person may be carried."

http://www.iata.org/SiteCollectionDocuments/Documents/GuidanceDocumentontheTransportofLiBatt_2010.pdf

Edited by r4e, 14 November 2012 - 09:52 PM.

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#43 r4e

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Posted 14 November 2012 - 10:33 PM

One of the few cave diving video that not bored me Posted Image
The lights used are these Scubamafia "the beast", a 300W Led lighthead.
http://www.scubamafi...ight-p-354.html

These guys have another interesting and affordable model. Two LED light heads at 6000 lumens each, 150° flood, with two battery canister options. The smaller 153 Wh battery gives a burn time of 70 minutes for two light heads. Fitted with E/O cords, you could still bring the light set plus one or two spare batteries as carry-on luggage almost anywhere on the globe. (see previous message).

http://www.scubamafi...ight-p-323.html

SInce Scubamafia is located within 2 hours driving distance, I might have to pay a visit to them and compare their stuff to my not-so-travel-friendly 16000 lumen Salvo 200 W HMI.Posted Image

Edited by r4e, 14 November 2012 - 10:33 PM.

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#44 SPP

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Posted 15 November 2012 - 05:11 AM

Thank u R4e, great international Lit-Ion ruling info. I will fall under IATA ruling.

#45 r4e

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Posted 21 November 2012 - 07:17 AM

SInce Scubamafia is located within 2 hours driving distance, I might have to pay a visit to them and compare their stuff to my not-so-travel-friendly 16000 lumen Salvo 200W HMI.Posted Image

Yesterday I had a chance to test The Beast. It is claimed to produce up to 28000 lumens of light at max power, 300W LED.

With a group of five divers we set up to do some video work at Ojamo mine. I was hoping to do the same shots I had done with my HMI lamp in September. Unfortunately, the visibility had turned quite bad due to mammoth pumping on the outside of the mine tunnel and inward flow of water.

The only reasonable comparison of the two lamps yesterday was placing the lamps on an underwater platform (1m depth) close to shore, in parallel, about 4-5m from each other and facing outwards, and comparing the light beams from surface. It was interesting how similar the two lamps were. It was difficult to tell apart the color tone. There were 7-8 persons comparing the output visually and either no difference was observed, or, the light beam of the Beast might have been just a bit green tinted in comparison to the Salvo HMI. Both of the lamps gave a very even spread of light. The Salvo beam is quite wide, visually estimated maybe 150 degrees, but, then it has a definite sharp edge. This is useful for avoiding unintentional light spill to the camera. The Beast has a beam of similar width. However, its beam has a softer edge, which could be useful as well. The light intensity and reach of the light flood appeared the same for both lamps, atleast for naked eye. We also took a number of pictures with various cameras, but, it was difficult to tell the difference even from a picture taken at equal distance from both lamps. This test was not very scientific, we did not use light meters nor attempt to compare accurate exposure. There might have been small inaccuracy in the horizontal angle of the lamp placement. Perhaps I'll still compare the pixel values of equal locations from a photo showing the lamps in parallel.

Other notes: the Beast has a more convenient size than the rather cumbersome 200W HMI. This applies both to the light head and battery. The battery of the Beast is 2kg negative in the water. The test diver pointed out this as a need to balance the rig.

As a conclusion of this initial and unformal test, it would seem that the Beast is very much comparable to a 200W HMI: light intensity, color, beam spread and reach, price. There are some benefits: smaller size, less dry weight, smaller risk of damaging the LED light head, less problems of turning on/off the lamp, probably better availability of lamps and spare parts. The lamp is made to order.

Not tested: burn time, color reproduction, restrike in freezing water, behavior in warm water. Yesterday, the water was 7 degrees centrigrade on the surface and 5 degrees in the mine.

Disclaimer: This was an ad hoc private test, not a paid review. These are the subjective first impressions of me and other persons on site. I have no connection to the company Scubamafia. Neither do I have any earlier contacts with them. We, a friend of mine and I, are planning to purchase a number of videolights in the near future. Sofar, the Beast will continue to be on our short list.

Edited by r4e, 21 November 2012 - 07:21 AM.

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#46 Davide DB

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Posted 21 November 2012 - 07:29 AM

We also took a number of pictures with various cameras, but, it was difficult to tell the difference even from a picture taken at equal distance from both lamps. This test was not very scientific, we did not use light meters nor attempt to compare accurate exposure. There might have been small inaccuracy in the horizontal angle of the lamp placement. Perhaps I'll still compare the pixel values of equal locations from a photo showing the lamps in parallel.


Hi Richard,
please post some pics.

I wish I had a couple of them in my latest video :)
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#47 SPP

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Posted 21 November 2012 - 10:37 AM

Damn........I am drooling...drolling....drooling. Thanks Richard for the review.
.

#48 r4e

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Posted 21 November 2012 - 03:17 PM

The pictures below are unprocessed frame grabs from AVCHD video of a Sony MC50E, WB set to "Outdoors". This WB setting gives near perfect settings for my HMI lamp.

The first picture shows three divers. Diver one, the furthest ahead, is using a Beast at half power. Divers two and three are using the 6000 lumen LED lamps. Unfortunately visibility was poor.

The second picture shows the lead diver holding the Beast downwards. Here you can see how even and wide the light beam is. Plus a soft edge.

The third picture is experimentation of a backlit subject. The small spot to the right of the diver is a HID lamp. The remainder is light from the Beast, partially reflected by an air/water surface at tunnel roof.

Attached Images

  • Pearl1.jpg
  • TheBeastPearl4.jpg
  • TheBeastPearl3-4.jpg

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#49 r4e

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Posted 21 November 2012 - 03:37 PM

The first picture shows the two lamps positioned underwater. On the left there is the Scubamafia Beast (LED) at full 300W power. On the right there is my Salvo 200W HMI lamp at full power. You might notice how the HMI lamp matches quite well the "Outdoors" i.e. sunlight WB of my camera. Both lamps are at a depth of about 1 meter and positioned horizontally. Unfortunately from this angle you cannot see the effective widths of the beams. The width and intensity was very similar. (The other stuff in the water is related to an ongoing building project of an underwater deco habitat.)

The second picture shows the lamps side by side on the pier.

Attached Images

  • 28kLEDvs16kHMI.jpg
  • SidebySide.jpg

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#50 AlexDawson

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Posted 22 April 2013 - 08:07 AM

The first picture shows the two lamps positioned underwater. On the left there is the Scubamafia Beast (LED) at full 300W power. On the right there is my Salvo 200W HMI lamp at full power. You might notice how the HMI lamp matches quite well the "Outdoors" i.e. sunlight WB of my camera. Both lamps are at a depth of about 1 meter and positioned horizontally. Unfortunately from this angle you cannot see the effective widths of the beams. The width and intensity was very similar. (The other stuff in the water is related to an ongoing building project of an underwater deco habitat.)

The second picture shows the lamps side by side on the pier.

Thank you for sharing this with us! 

I am looking at this light at the moment http://www.sublight....-995-c-157.aspx

 

It should be verry similar to the Salvo 200w HMI.

 

Is there any other LED lights out there that could be interesting?

 

 Kind regards // Alex


Underwater photographer © Alex Dawson http://www.dawson-photo.com Stockholm, Sweden +46706369963

 

D800E & a lot of light...


#51 r4e

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Posted 22 April 2013 - 08:34 AM

Thank you for sharing this with us! 

I am looking at this light at the moment http://www.sublight....-995-c-157.aspx

 

It should be verry similar to the Salvo 200w HMI.

 

Is there any other LED lights out there that could be interesting?

Thanks for your information, Alex. I just returned from the mines of Tuna-Hästberg in Sweden, where my HMI lamp was not cooperating at all. It does give me some additional incentive to purchase something soon...

 

Another manufacturer has promised to show me some very competitive LED technology at the end of May.


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http://www.cerella.fi for the Underwater Photographer and Videographer