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  1. Hello, I'm comparing 3 HMI fixtures that will get me the most light output on a 16a 230v (French) circuit. Here, in France we are able to get between 2500w to 3000w on a single breaker, depending on the houselhold config and its age. So, all three fixtures: the Arri M18, D25 and AS25 (Arrisun 4k bulbed at 2.5kW) have their own qualities and functions (facetted reflector, fresnel and par lenses) and I'm not here to compare their uses as it depends on the project. I haven't had any time getting all three on the same set to compare - but I've had multiple lamp ops tell me - and some in
  2. Hello there everyone, for an upcoming project we are required to move a 4kw HMI on some sort of dolly approximately 10-12m to simulate the sun moving across the room. The caveat is, that our location is on the first floor. Which means I need some sort of a smart solution to secure a wind-up stand (extended all the way to approx. 4m) against tipping over, whilst at the same time begin able to move it along the tracks. Ive been thinking about constructing a larger platform for a GFM Quad-Dolly made out of wood or similar material with extendable aluminum struts so we could tie the
  3. I'm in the process of putting together a lighting style for an upcoming horror feature that I am shooting. Will we be on the Alexa Classic. Question: When shooting interiors, are there perks to using a blue-gelled Maxi Brute rather than an HMI when it comes to simulating daylight? There will be tungsten practicals in the shot as well.
  4. Hey gents, So I tested the Forza 500 up against my Profoto 1200w HMI today, and figured some of you might be interested in the results. Long-story short? I was sadly underwhelmed by the output of the Forza. Colour-wise the Forza was very impressive. Effectively equivalent to the HMI bulb according to my spectrometer. And the beam from the LED is remarkably even too (evidently a COB has significant advantages over an open-faced point-source light in this regard) Output-wise however, there's clearly still no replacement for displacement. At 800 ISO and somewhere around 4-5 me
  5. ARRI Studio Ceramic 250 Hi Guys I am interested to hear peoples opinions on this light it sounds like something that would be very handy to have in my kit. It seems to have a built in ballast and the bulbs can be swopped between a tungsten 3300k bulb to a hmi type bulb with a 5500k temperature. They power usage is 250 watts and has a light output the equivalent of a 1k tungsten. They sound to have a lot versatility and they run cooler temp wise. But am i missing something here. Why are these not that popular, fair enough they are an older light fitting buti have never seen one of th
  6. Hello there folks. My 2.5 strand hmi barn doors have unfortunately have gone missing. This light is a linch pin in my kit and is pretty useless without the barn doors. I just wondered if anyone had any spare ones they are willing to sell. I have searched the internet looking for them and had no luck. Any leads or suggestions of where to look would be deeply appreciated.
  7. Hi, We are two technicians working in the film industry in France (a grip guy and a gaffer) and we just discovered this very interesting forum. We particularly noticed that gaffers and cinematographers were asking questions about light output and what aperture is obtained at a certain distance. It happens that with the help of two IT engineers we developed an iOS app responding to this question about 2 years ago. First and for all, we’re not going to post messages everywhere on this forum to sell our app nor are we going to pollute your threads to gain in visibility. We just think s
  8. I have a shoot coming up and we're planning on using a chimera L on a daylight fresnel. I don't use chimeras much and I need to pick which size light to use. A D12 is going to be much easier to rig, but we have the option of using a D25 if we need the extra stop of light. Budget is tight and we can only afford one light. I find the arri photometrics app handy for direct sources and was wondering if I could find any info on how much the chimera is going to cut the light by ? Say x ft away, for a 1.2k source how much light will I get centre and off to the sides by about 30º ? Would be
  9. The owner of Commons Productions, Spencer Commons, is retiring. He’s been in the lighting business for 30+ years. I’ve learned a bunch from him about being a gaffer. He’s now selling his grip and lighting equipment - c-stands, kino flo, tungsten, LED, hmi, flags, electric ... you name it, he’s probably got it. Prices are good. http://www.commonsproductions.com
  10. Hey all! I'm doing a showreel shoot this August, and it will probably be really sunny and have a out door location coming up. Due to the limited budget and power available, the biggest light i can get is a off brand 2.5k HMI and a home made 6by diffusion from shower curtain. I was wonder if these are enough to make a impact? My indie rental house didn't tell me which model of HMI we are getting, but it's safe to assume it won't be as effective as the Arris (maybe matching output of M18 idf we're lucky) . I'm not diffusion the light, maybe a 1/4 or 1/8 cto max for some scene
  11. In one of the book I am reading, it says "Most of them (HMI Lighting) run on 240 volts and can be used only with crystal cameras." I didn't get any clear information on crystal cameras in google search. What does crystal camera mean? Thanks.
  12. Hey everyone, I'm wondering if I were to use a 1.2k HMI with a magnetic ballast in the UK on wall power (50hz) - if keeping my shutter angle at 180, will I get flicker at 50fps or 100fps or is it only likely to happen when I move off these frame rates? I know magnetic ballasts can be a little more finicky for flicker.
  13. I read online that you can ONLY use HMI lights with inverter generators. Question 1: What would happen if I tried to power an M18 with a generator that was not inverter? It's just a regular gas genny. Would that damage the light or ballast? Would it just not work? Questions 2: I have a Ryobi 1800w running watt, 2300 starting watt generator seen here: I'm told that hmi's require a higher wattage when striking. Would I be able to strike an m18 with this Ryobi generator? Is 2300 enough to strike it? What's the wattage required to strike? Question 3: If I tried to strike the m18 on th
  14. Hi again everyone. Not really a question this time but would wanted to show my lighting plan for an upcoming project to get some feedback. I have attached my lighting plan... The talent will be talking to camera and cooking. The background will be dressed with Christmas decorations and what not to celebrate the coming season. I want the lighting to be very soft and cold, to have that winter feel. I'm shooting it all in daytime. I'm using an M18 through the left window (only window our too the left) through a bed sheet which will highlight the background and rim our talent. The other M18 is
  15. Ebay Listing - https://www.ebay.co.uk/i/302662389272?rt=nc
  16. Both working, both are in reasonable condition. One has barn doors, other hasn't They're big and heavy, so I'll ship to Europe only. https://www.ebay.ie/itm/202085601853?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 https://www.ebay.ie/itm/202085600277?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 I also have one 4k Sirio HMI with magnetic ballast, I'll also will let it go if someone interested
  17. Hi everybody I am preparing a shooting as a gaffer, on a non-stage interior and I am looking for the best way to light a 6x6m. (20x20') green screen and white screen. Here is the camera configuration: Red epic dragon (maybe an Hellium sensor, depending on the production department) 25 fps 1/250 ISO 800 Zeiss CP2 The topic of the video is a free-fall simulator demonstration. We are shooting at night for day, in an area from a shopping center measuring 14m. large x 7m. long x 14m. tall (46' large x 23' long x 46' tall). There are not structures to hang on the fixtures. On th
  18. I have a MUST SELL great deal! A 12k Sunray HMI Fresnel with Magnetic Ballast, all cables in perfect condition, scrim set in box, front cover, and a roller dolly. The kicker is it has a BRAND NEW never lit globe (a $1,000 Value!) I'm in North Hollywood and selling it all for only $3,000! I love this light, and the paint is good, no dents, the internals are good (reflector and wires are in great condition) and the glass is clean with no damage! It was barely used, just stored forever. Everything is included (But NO STAND). Below are more detailed photos. Please call me at 818-33
  19. Hi, i'm currently in my second year of Uni and for my dissertation my question is "Will LEDs Lights be able to replace every type of light used in film production? " If anybody who has knowledge of different types of lights could help? By doing this questionnaire I'd really appreciate it thank you. :) https://docs.google.com/forms/d/e/1FAIpQLSd75cWHDKLyzAQ4gygI19yFEOWUUhkpW1tTUJZZWWP9uVXvmA
  20. http://www.ebay.co.uk/itm/Dedolight-5Ft-Panaura-Daylight-Tungsten-Kit-Eggcrate-/302468506880?hash=item466c872500:g:PVsAAOSwkWNZobb3
  21. I'm looking to mimic this fight scene from the matrix with bright flashing lights outside these windows - supposedly lightning from the storm outside. (see attached 1-3) My assumption at first was that they maybe had some HMI's hooked up to flicker boxes. But then I thought that HMI's have issues with hot strikes so maybe that's not what was used? Can an hmi work on a flicker box to simulate lighting? If so, what reccomendations of a flicker box do you reccomend I use? If I can't use an HMI to simulate lightning with flicker, how else can I achieve this effect? I'm hoping to only
  22. Hello Everyone, My name is Vicken Joulfayan, and I am a new member here! I am a graduate student at the New York Film Academy in the Masters in Filmmaking program but my focus is primarily on cinematography. I am the DP for seven master thesis film projects, two of which are scheduled to be shot in the next several weeks, and am in need of advice for lighting. Although I have researched a lot and have a general idea of how to light each project, I need your advice in deciding which exact equipment to rent. The projects have budgets but they are minimal. I've embedded links to the first tw
  23. Is there way for someone like me to start using a generator so that I might power an M40 or an Arrisun 60? I love the M18 because I allows me to work with a decent amount of light on a very small budget. I've been shooting commercial projects on a thin budget by running with one M18, a few fluorescent fixtures a great deal of light modifiers. In the states, I believe an M18 is about the most powerful light you can run off a house or office circuit. (If there are more powerful options, I'd love to use them) Is the answer as simple as renting or buying a 6500 watt portable generator
  24. I'm curious on what kind of output would be necessary to key from a light outside a window into a small (10ft x 12ft) room for a daylight interior setup. This is assuming no direct sunlight or night. Do I need a 12/18K or can I use something like an M90, M40, or even something of lower output?
  25. Hello Guys, I know this has been posted before but I never found a conclusion to it. I've always learnt that you can't restrike/hot-strike HMI bulbs meaning to turn them off and straight back on without blowing the bulb full-stop. Every shoot I've ever been on this has never been the case nor even close to a concern from the DP. They restrike the bulb just 30 seconds after it being shut off even when the bulb has been on for 10-15mins or so, it makes a nasty sound from the bulb trying to re-light but other than that it's fine everytime. So if someone can clarify some questions
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