Source 4

robotsound

Well-known member
I recently ordered an ETC Source 4 light to use in independent filmmaking.

For those who don't know, the Source 4 is something of a de facto standard in high end theater lighting, but it has been making inroads into the film industry as people figure out that it's great for movies too. I first read about the Source 4 being used by David Mullen (ASC), when he was shooting season 2 of Big Love for HBO. Apparently he learned about it from the original director of photography on that show.

It's a tungsten light. The one I got is 750 watts, with a 50 degree beam angle.

The Source 4 has a couple of neat features that make it a little different than a more traditional fresnel light. It has a fairly sharp optical style lens on the front, so the light is harder and more directional than a fresnel, even when set to flood.

It also has four shutters inside the light instead of barn doors. Since the shutters are right at the focal point before the lens, they result in a pretty sharp cut of the light, more so than barn doors can provide.

Given these characteristics, it's a pretty great light for filmmaking. The light is really hard, but can easily be bounced to be as soft as you want. A bed sheet on the wall or ceiling is bigger (and thus softer) than any soft light fixture could ever be. Also, the fairly precise cuts made by the shutters can in some cases remove the need for extra grip equipment. Do away with the need for extra flags and your setup times decrease.

I haven't done a shoot with it yet, but here is a quick picture I took while setting it up for the first time. The only light in the picture is coming from the Source 4, which was quickly and imprecisely bounced off the white ceiling.

source-4.jpg

There is a bit of a learning curve getting these lights adapted to film use.

For one thing, you need to get a TVMP adapter (Matthews makes a good one) to adapt the yoke that supports the light onto a baby pin or junior receiver.

They're a little heavier than your average 2K, so you really want a combo stand to go with it, not a C stand.

Finally, it comes with bare wires, so you have to buy a plug and wire it up yourself. It only takes a screwdriver though, and is very easy.

I've been very happy with this light so far, and I'm looking forward to using it on future shoots. If anyone has any questions about it, I'll do my best to answer them.
 
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They're modular too and you can fit lens trains between 19 and 50 degree without too much trouble. That can be nice for strong beam projection effects. The bulbs aren't terribly expensive and the unit cost can't be beat. The fact that they are made to withstand rock and roll conditions (lots of travel, set, show and strike cycles) and are made by ETC are huge bonuses. A great fixture, underutilized by the film business!
 
I thought I would update this thread with a few pictures from a shoot I did a while back. For this short film, we used nothing but the Source 4 light and natural sunlight. The Source 4 was bounced off a bed sheet, gelled with 1/2 CTB, and used to carry the sunlight.

01.jpg

02.jpg

lighting-setup.jpg
 
where dod you get it and how much $? Was thinking about getting a few myself - though mostly for pools of lights here and there.
 
I got it from www.filmandvideolighting.com. I think I ordered the stand from someplace else that had free shipping, but I can't remember now.

EDIT: I found out later that the Barbizon Lighting Company carries these also, so you might try them first, as they're actually a sponsor on this board.

Actually the first thing that I tried to do is order this from B&H. Big mistake! It was back ordered when I ordered it, and a month later it was still back ordered. After that I went to Film & Video Lighting, and they were able to ship one out almost immediately.

Here is a list of things to get if you want to replicate this setup:

The fixture itself:
450 Source 4 Ellipsoidal Light 750W 50 Degree 450 $331.88

You have to put a plug on it. Since I'm not wiring it up to a theater lighting grid, I chose a standard power plug.
5266CB 15A Male Edison Plug Black Leviton $5.39

The lamp (bulb). I bought a couple to have a spare. Don't get the long life bulb, it lasts longer because the color temperature is lower.
HPL750W-115VWC HPL 750W, 115V, 3250K Bulb for ETC Source 4 $15.49

The stand. A C stand isn't going to cut it. This light is a little heavier than a Mole or Arri 2K. You must get a combo stand. Comparison shop on price and shipping. It's heavy.
Avenger Aluminum Combo Stand 35 w/ Lazy Leg A1035B (A115B) $236.88

I also got a little scrim bag to hold gels that I cut to size. Being a theater light, it has a gel holder frame that fits on the front.
SB2 Lindcraft Scrim Bag 5" - 7.25", SB2 $13.99

An assortment of gels to go with it. This comes with a lot of colors you won't need. What you normally need is varying shades of CTB (especially 1/2 CTB) to match sunlight, maybe some CTO just because (more useful on daylight balanced sources to match tungsten), and various shades of plus green (to match typical florescent lights). You do not need "Congo Blue" or "Cosmetic Rouge", but they come with this pack anyway. If you're really serious, you can buy CTB, CTO, and plus green by the foot.
Lee Master Location Gel Pack 36 Sheets LS9050 $48.79

Hope this helps!
 
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Also Patryk, if you want to use it to rake light across a wall and that sort of thing, you might want to look into a narrower beam angle. I went with the 50 degree lens because my primary use is to bounce it indoors to provide a nice soft light.
 
Another fixture to consider is the Source 4 Jr., which is a 575 watt fixture with the same functionality as the full-size Source 4 fixtures, which accept up to 750 lamps. The Jr. is a slightly smaller form-factor, which can help with the light stand requirements without sacrificing the functionality. Contact me for pricing on any ETC fixtures and accessories.
 
I picked up a Source 4 Jr. on ebay for $200 (light and Edison plug were extra) and used it on a shoot yesterday. We were in a very cramped walk-in closet and I didn't have any space for lighting in the room. The Source 4 Jr. let me bounce off the ceiling with a good level of control and gave me a very nice look. The only problem was the bulb burnt out half way through production and I had to switch to an Arri 650w fresnel. I didn't get anywhere near the same amount of control and as you can see, the light was bouncing a lot more and I didn't have time to skirt the ceiling.

ungraded footage:

Source 4 Jr.
Source 4 Jr..jpg

Arri 650w
Arri 650w.jpg
 
Thanks for sharing those shots! I have a couple of questions if you don't mind.

By the way, I think those will probably cut together pretty well, especially after color grading.

Why do you say the Source 4 Jr. gave you more control than the Arri 650w fresnel? Is it because the Source 4 has built in shutters to flag the light?

Did your exposure level change at all when switching between the 575w Source 4 and the Arri 650w fresnel? They claim that a 750w Source 4 is about on par with a 1k light in terms of output, but I've never done an A/B test.
 
I've used both S4 and S4 jr zooms in theatres. The S4 JR zoom gives about the same light as a 650w profile, a "full" S4 with 750W lamp is roughly equivalent to a 1200W profile. Both are "Cool Beam" in that they use a dichroic mirror so all the heat goes out the back and the talent stay cool, esp important on stage where you could easily have a couple of dozen (Or more!) of the things. ETC do lens tubes with 70 and 90 deg throw (Used both recently), and also do Extra Definition lens tubes fro 26-50 deg especially for gobo projection.

A couple of points about the dichroic mirrors, although you won't burn out gels as quickly as with a "normal" lantern, remember that what comes out the back is almost pure heat, so take care of what's behind them!

HTH,
Dave
 
Yeah, they can definitely get hot! I never fire it up without gloves nearby. Thanks, that's good to know about the respective light output.
 
I suggest you pickup the iris, & some additional lenses too. The iris is great for shaping the beam, while narrow beam lenses greatly intensify the output.

Source 4 are often used with K5600's Joker 400W HMI plugged in the back. These are relatively strong little HMI's with a multitude of uses.

While a combo is fine for a Source 4, any wide based light stand will do, so I often just use beefy babies, usually versions with steel risers. And a shot bag.

Best,
Bern
 
Yeah, you're right Bern. A beefy baby or something would also work great. I just didn't want people to think they could put this on a C stand without sandbags and expect it not to fall over!

How do you like the iris? I haven't tried those. It just stops down like a camera aperture, right? Do you find it gives you more control than the built-in shutters? And do you get the color fringing on the edges when the iris is stopped down, like you do when the beam is wide open?

I'd love to get a K5600 Joker Bug for this light, but that sort of takes the price up from $300 to $6000, so it's not really an option for me at the moment.
 
How do you like the iris?

The iris does works just like the aperture ring on a lens. I mostly use it for fine control, & can't remember if it cures the color fringing, but think so. However I'd invest in an additional lens before picking up an iris.

I don't own Jokers either. Was ready to buy, but am now more interested in ARRI's LED fresnels, mostly due to their low power consumption. Hopefully one day soon there will be an LED elipse.

Still a tungsten Source 4 is pretty punchy, even with CTB, & they're often used with scrims clipped on front. My next Source 4 will likely be the "Zoom". Though I've never used the one it seems the convenience of a zoom would usually outweigh any reduced output.

www.etcconnect.com/product.overview.aspx?ID=20081

This past week I keyed a music video with an uncorrected tungsten Source 4 with a 19* lens, & filled with a pair of 4' 4-Banks. The elipse puts out a beautiful, & smooth, pattern.

Best,
Bern
 
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Punchy is right. If you point it directly at someone indoors they are going to be squinting, that's for sure. Nice hard shadows.

This is total hearsay, but I heard somewhere online that people didn't like the zooms as much as the fixed lenses. I have no idea if there's anything to that or not, but I'd encourage you to research it before you pull the trigger.
 
do you mean replacing the tungsten fixture? So in effect its an HMI with the internal flags for a very sharp cut?

Yes, the K5600 Joker Bug turns the Source 4 fixture into an HMI. There's also an 800W version. I would love to get one, except for the fact that it's 20 times as expensive. You do gain two stops and the color becomes daylight balanced though.
 
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