The light seems to be using 2 DPBA's : Are you joining the DPBA-14 with the DPBA-714 ? As far as I can tell, the DPBA-14 doesn't fit the DLH4 but the DPBA-714 does (or is it the other way around?. Ian doesn't talk about the use of both adaptors, so what is the thinking here?
At 1:06/5:28 a DPBA-714 intensifier is shown which offers the most light boost for DLH4 light heads. Further lights using the smaller DBPA-7, which is the smallest and most compact parallel beam intensifiers, but not as effective as DPBA-714. We’re offering different versions of parallel beam intensifiers. The larger the front lens, the more light output. Ian uses the DBPA-714 as “side light” (min 2:30), while front and backlight were equipped with smaller intensifiers. Actual overview of intensifiers may be here www.dedoweigertfilm.de/dwf-en/products/lightstream_content/lightstream_photometrics_dlt_dbpa.php
@@DedoweigertfilmDe how come the photometrics at 2m without parallel beam adapter in this says 8700lux. But in the "Two Faces of Light" brochure from 2011, DLH4 with 100W bulb says 12375 lux at 2m, and with a 150W bulb it says 20475W at 2m?
@@directoradamg Our measurements in 2011 and 2020 differs from the lamps used. Unfortunately a big manufacturer stopped making low voltage lamps with high light intensity we've used in 2011. Today we have a new manufacturer of our low voltage lamps. In regards of the parallel beam intensifiers: the relation is between spot angle and light head with intensifier. It's important to do actual output comparisons with the same lamp/bulb at the same time.
Reflected light is based on a parallel source like the sun. dedolights focusing heads offer a 4° Spot which is perfectly suited to work with the lightstream system; the hard character of the lightbeam is immanent due to the double aspheric lenses in all focusing positions. A typical Fresnel would focus down to 9° - yet the character of the beam will be diffuse due to the Fresnel edges and pebbles, hence the distinct benefit of the reflectors will not be fully exploited. But in common practice you will find the lightstream reflectors being used with a mix of lighting tools like dedolights, fresnels, profiles for a specific look. Will be interesting to see how you use the lightstream system in your setup.
Thanks for this *EXCELLENT* video.
Dear Ian, Hi! Great Video, congrats!
The light seems to be using 2 DPBA's : Are you joining the DPBA-14 with the DPBA-714 ?
As far as I can tell, the DPBA-14 doesn't fit the DLH4 but the DPBA-714 does (or is it the other way around?. Ian doesn't talk about the use of both adaptors, so what is the thinking here?
At 1:06/5:28 a DPBA-714 intensifier is shown which offers the most light boost for DLH4 light heads.
Further lights using the smaller DBPA-7, which is the smallest and most compact parallel beam intensifiers, but not as effective as DPBA-714.
We’re offering different versions of parallel beam intensifiers. The larger the front lens, the more light output.
Ian uses the DBPA-714 as “side light” (min 2:30), while front and backlight were equipped with smaller intensifiers.
Actual overview of intensifiers may be here www.dedoweigertfilm.de/dwf-en/products/lightstream_content/lightstream_photometrics_dlt_dbpa.php
@@DedoweigertfilmDe how come the photometrics at 2m without parallel beam adapter in this says 8700lux. But in the "Two Faces of Light" brochure from 2011, DLH4 with 100W bulb says 12375 lux at 2m, and with a 150W bulb it says 20475W at 2m?
20475 lux! Not watts. Sorry
@@directoradamg Our measurements in 2011 and 2020 differs from the lamps used. Unfortunately a big manufacturer stopped making low voltage lamps with high light intensity we've used in 2011. Today we have a new manufacturer of our low voltage lamps.
In regards of the parallel beam intensifiers: the relation is between spot angle and light head with intensifier. It's important to do actual output comparisons with the same lamp/bulb at the same time.
Does this system not work with lights that do not have the parallel beam adapter? What about fresnel lights?
Reflected light is based on a parallel source like the sun.
dedolights focusing heads offer a 4° Spot which is perfectly suited to work with the lightstream system; the hard character of the lightbeam is immanent due to the double aspheric lenses in all focusing positions.
A typical Fresnel would focus down to 9° - yet the character of the beam will be diffuse due to the Fresnel edges and pebbles, hence the distinct benefit of the reflectors will not be fully exploited.
But in common practice you will find the lightstream reflectors being used with a mix of lighting tools like dedolights, fresnels, profiles for a specific look.
Will be interesting to see how you use the lightstream system in your setup.