Chauvet has been focusing on professional products for some time now, offering innovative and effective lighting fixtures. Their Ovation range pairs LED sources with the highest standards of conventional fixtures. We chose to test the E 260 profile in the warm white version.
Chauvet Ovation E 260 WW Profile Spot.
The fixture
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The E 260 comes in different versions: WW, Warm White, and CW, Cold White.
We tested the E 260 WW, whose color temperature we measured at 3250 K, with a CRI of 97. That already tells us a lot…
The unit consists of two distinct sections: the light engine and the lens tube. The light engine includes the source, its cooling system and the electronics.
It features a barrel equipped with a set of four framing shutters and allows you to fit fixed-angle lenses (14°, 19°, 26°, 36°, 50°). It can also mount two zoom lenses (15°-30 °, and 25°-50°) which have shutters directly incorporated. We tested a unit with a 15°-30° zoom configuration.
Interior/exterior design of the fixture
The Ovation E260 WW in use.
The unit is long and tapered, with its lens accentuating its long-throw spotlight look. The very long yoke takes up vertical space (about 40 cm) when it is mounted, but offers the possibility to orient the fixture so that it can be positioned with no obstacles, especially when mounted horizontally with yoke underneath the body, or simply as a down light.
The lens is fitted into a circular mount – a bit like a camera lens – with a quarter turn and is locked by two knobs located on the light engine assembly. Unfortunately, the tightening is done directly with the end of the screws that clamp the lens mount, which means that you end up digging into the aluminum in different places very quickly.
It would have been sufficient to have a system of rounded shims on the end of the screws to ensure that they can be tightened without damage.
On top of the light engine, there is a large ring for attaching a safety cable.
The inside of the light engine assembly. To the right is the optical unit in its conical housing, and the heat sink on which the fan is mounted.
By dismantling the unit, we gain access to the inside of the light engine. This is spacious and airy. The front gives way to the large output lens, which is fixed with four screws directly in front of the LED source.
The source is about 3 cm in diameter, and is coupled using thermal paste to a huge heat sink, which is itself equipped with a large fan that covers almost all of its rear surface. The power supply is located at the bottom of the housing, and the control PCB is positioned against the rear panel.
The exposed LED source and, next to it, the optical unit.
At the rear is a handle for moving the fixture, the connection panel and menu controls.
The power supply is connected here via a PowerCON input with an throughput connector (remember that the unit absorbs less than 250 W, so you can chain a few of them on a single line!), and the DMX input/output connection is also duplicated on both XLR3 and XLR5.
The exposed LED source and, next to it, the optical unit.
The optical section is quite conventional and is based on the familiar operation of some standard traditional lenses, such as the double knob for moving the zoom and focus lens carriages, with the focus adjustable by extending a crank located on the larger knob. This adjustment is straightforward, smooth and precise.
A lateral inspection hatch that closes with a simple captive screw allows easy access to the lenses for cleaning. However, we don’t find any means of preventing the lens from falling accidentally. A small cable connecting it to the light engine would have been appreciated.
Just in front of the framing shutters is a sliding hatch, held in place by two captive screws, which allows access to the slot provided for a gobo holder. Closing the trapdoor prevents light from leaking out. The shutters are well designed. When fully inserted, they do not protrude beyond the maximum width of the fixture. In other words, when you lay the fixture flat, you don’t risk bending the ends of the shutters… No, really, this happens a lot!
The movement of the shutters, as you would expect, allows you to obtain any desired shape. It’s easy to work with them, nothing gets stuck (well, the unit is new, this would be bad…).
The barrel of the fixture can be rotated to allow the orientation of the shutters, to form a “diamond” if necessary.
A gel frame holder completes the unit, it allows the installation of gelatins with an output diameter of 17 cm.
Various views of the beam. In the shadows top right, you can just make out the theatre lighting designer Karine Tison on her scaffold, adjusting the fixture.
What’s on the menu
Configuration options for the E 260 WW can be accessed by means of a small display and four keys. You can select the control configuration between modes with 1, 2, 3, or 6 channels.
“6 canaux pour une découpe d’une seule couleur ?” S’interrogeront certains d’entre vous… Hé oui chers amis !
“Six channels for a single color profile?” Some of you may ask… Yes, my friends!
In addition to a 16-bit dimmer (thus, with a “fine” parameter), the six channels of the extended mode offer access to a strobe channel, an “auto-programs” channel that allows different programmed “flashes” to be triggered, a channel to adjust the speed of these “auto-programs”, and a channel used to remotely configure the four different dimmer modes, which range from OFF to curves 1, 2 and 3.
– The 3-channel mode consists of dimmer, fine dimmer and strobe channels. The 3-channel mode consists of dimmer, fine dimmer and strobe channels.
– The 2-channel mode is limited to dimmer and fine dimmer, while the 1-channel mode provides dimming from 0 to 100%. The 2-channel mode is limited to dimmer and fine dimmer, while the 1-channel mode provides dimming from 0 to 100%.
The dimming curve from 0 to 100%.
The dimming curve from 0 to 10%.
In the menu, the “static” mode provides access to direct local control (dimmer and strobe), and the fixture remembers this information, even after it has been turned off. This way, you can configure it and then turn on the projector whenever you want via a direct mains switch (I said a switch! Attention: not a dimmer!) and it immediately returns to its previously configured state. This is particularly useful in architectural, decorative and museological applications, for example.
The “Dimmer mode” function allows you to assign one of four different dimmer curves to the fixture. We’ll come back to this further on. You can select the operating frequency of the LEDs from six different settings (from 600 Hz to 25 kHz) via the “LED Frequency” tab. For some video applications, this can also be useful. You can also access information on the operating time of the device, the setting of the backlight of the display, etc. In short, there’s everything you need and more to configure this lovely luminaire!
Measurements
Derating: The derating curve. The output stabilizes quickly.
We turn on the fixture at full power and measure the illuminance at the center every five minutes to plot the derating curve, i.e. the attenuation of luminous flux due to heating.
The light output stabilizes between five and ten minutes with an attenuation of 7%, which is very good.
We can then perform photometric measurements at a beam angle of 20°, from which we can derive the luminous flux of the fixture.
At a distance of 5 m from the target, the illuminance at the center of the field reaches 11,180 lux when cold and 10,400 lux after derating. From this we obtain a luminous flux of 13,280 lumens cold and of 12,340 lm after derating from a single 230 W LED source! This is more than some equivalent fixtures with 2000 W lamps!
This is a big surprise because, although we know that many LED sources are now capable of quite amazing performance, we didn’t really expect such a “punch” from this product.
The light
Jocelyn Morel, the author of this article, in the beam of the Ovation E 260 WW. The fixture is located at 5 m, and the beam angle set at about 20°.
The light is clean, though its distribution is not perfectly uniform at all zoom settings. When zoomed in tightly, it’s impeccable; when zoomed out, there’s a little more light in the centre. The optical principle of this unit must be responsible for this phenomenon.
We can also observe in the haze, where the beam emerges, a kind of “rod” of light that forms at the centre of the beam (like a beam within the beam), which is slightly visible for several tens of centimeters in front of the lens.
Anyway, this is not a real defect, and it poses no real problem. It is just a characteristic of the fixture.
The flux is generally well directed and the focus is crisp and precise. The tight beam still requires at least six meters of distance for a clean and tight beam without any iridescence.
Some different aspects of the beam.
At less than this distance, a very slight orange halo encloses the edge of the beam. From about 17° and wider, this phenomenon disappears. As we noted above, the framing shutters are effective. The sharpness on all the shutters is really very clean, at short or long distances.
A difficult task for a profile: a beam firing at an angle (here about 45°) on an inclined surface; some compromise on sharpness is required. Our Ovation does quite well.
As for dimming, we tried the different dimmer modes. The OFF mode maintains the instantaneousness of LEDs, with a crisp and precise response to both ignition and blackout. The other three modes provide different emulations of the curve of a halogen lamp with an “inertia” that is faster or slower. The simulation is very accurate and realistic.
Since we are talking about emulation, let’s dedicate a few lines to discussing a key issue: the color shift. While a fixture like this, with an LED source at 3260 K, is capable of simulating the inertia of different halogen lamps, it is incapable of simulating the shift in color – the well-known “orange” as the filament is falling towards black. At 5%, 10% or 15%, the beam is obviously still fixed at 3260 K…
That being said, the real question is this: Is it really a handicap for our E 260 WW (and for all products using the same technology) to keep its base color over the entire dimming range? Because, if this is indeed the real difference from halogen, isn’t it actually by using halogen that we had a handicap of color that varied according to the dimming level?
I can already hear those who are nostalgic for halogens shed a tear “as a matter of principle” about the variation in color and the famous “warmth” of the incandescent filaments of their beloved lamps. Nevertheless, it was a real pain sometimes to get the desired color at the desired intensity as soon as you dimmed a little. Just think about the appearance of a Blue 119 at 15% on a PC or a profile… Or consider the head of an actor illuminated with a 201 that was ruined by a profile at 20%…
With a LED, the problem no longer exists; we obtain exactly the same shade at any dimmer setting. In fact, it “corrects” the “problem” that we had finally digested and considered as the “norm” that we couldn’t do anything to prevent… until now!
What if this famous “warmth” of the amber that comes down really only ever mattered on the blinders, the Moles, etc.? In other words, these are sources that mostly make sense when the filaments are slightly glowing and that are rarely used for color. For spotlights, instead, 90% of the time maintaining color temperature over the entire dimming range is a major advantage.
The weather protection of the IP65 version.
Another interesting thing to know is that there is an IP65 version of this profile. It differs from the standard model mainly due to the presence of small flexible caps that ensure the waterproofing of the cables and connectors, but also by its casing, which has been designed to allow cooling without allowing water to enter.
Conclusion
This is a very nice unit that delivers remarkable luminous performance. The future of the “conventional” is in line with everything the lighting designer expects from a usable and well-built profile in 2019, and one that will be there for many years to come.
What we like:
- The luminous output by itself
- The lm/W ratio
What we don’t like:
- The absence of a safety cable on the lens
- Screws that scratch the aluminum when tightening the lens
Ovation general
More information on the Chauvet Lighting Website.