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up using the smaller 2.1 as a backlight on interviewees, and
for that purpose I’d be happy to have the bicolour version
for ease and speed. The 4.1 was just about strong enough
to give an background accent on a cream wall behind one
of the interviewees in a room illuminated by a window - the
daylight version would probably have been more effective.
In my experience, I rarely use my AC dedos at full power, and
often end up having to compensate for the resulting colour
shift with CTB gels, so in most tungsten situations I don’t see
the lower flood output being a problem, but the figures would
certainly steer me towards the daylight version and I’d use
CTO to match colours shooting indoors.
The focus ring works both to control light angle (the 4-5
degree tight beam is virtually the same as the AC DLH4) and
to increase output. In a two-camera, low-key indoor situation
without the fight against daylight, but with a huge fight
against light spill from soft lights as keys, I was able to solve
the problem by substituting with the LED hard lights as side
keys, using the focus to increase the output to acceptable
levels. I didn’t have a chance to see how long by 95Wh batteries
would power the lights for, but certainly for a one hour
interview the charge display had only dropped about 30%.
In tests the UK distributor says the 4.1 ran at full output
for three and a half hours on an 130Wh battery, so the 2.1
should be double this.
Beam spread was even and constant throughout the focus
range, and the multi-leaved barn doors are really versatile,
enabling enough control to create light slashes or squared-
edged shapes. Like the AC lights there are projectors
available for ultimate accuracy and inserting gobos, and soft
boxes for both fixtures. I could see a softbox being useful
for conventional one-camera interview setups, with the 4.1
as diffused key, and the 2.1 as backlight either soft or hard.
The comparison with the 150W DLH4 output levels is
interesting - see the table below. The data shows the 4.1
Bicolour is less powerful than either the DLH4 or the 4.1
daylight version, although it’s more powerful at 5500K than
3200K. The DLH4 comes out as a winner at both spot and
flood, but notice that the angle of the flood on the LED is
12 degrees narrower, and thus the light beam may be more
concentrated. How much does this matter for most shoots?
In conclusion I found the Dedo fixtures absolutely lived
up to the quality the brand name implies. There are other
lights on the market at a range of price points and quality,
but none has the unique patented design that produces
the unique beam qualities we all know from the AC range.
I would be happy to use them on just about any shoot in
place of my AC versions.
Measurements taken at 1M
DLH4 - 150W Tungsten head
(4.5 - 48° beam angle)
Spot: 13000 Flood: 3000
DLED4.1-D - 40W daylight LED
(4 -60° beam angle)
Spot: 24000 Flood: 1300
DLED4.1-BI - 40W Bi-Colour LED
(4 -60° beam angle)
Spot 3200K: 5000
Flood 3200K: 740
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