LED parren met goede licht kwaliteit

Wat je niet moet vergeten is dat je nooit dezelfde lichtopbrengst zal krijgen dan bijv. een normale 500Watt PAR

lucken schreef:

Inderdaad, maar wel voor de genoemde par en niet voor een Showtec par of andere Chinese par !

It’s easy to see that there are significant benefits that come along with the Pixelpar. But all of the size, weight and energy savings are of secondary importance to the usefulness of the light. What we’re most interested in is how the quantity and quality of light compares to a conventional color wash.

To help answer that question, we used a GE type 217 “color and cosine corrected” light meter and measured both a Pixelpar and a Source Four PAR with a new HPL 575 lamp. With a 15’ throw the Pixelpar produced 50 footcandles at the center of an 8’ diameter field. By contrast, the Source Four PAR with a narrow lens at a 30’ throw produced 225 footcandles at the center of a 7.5’ diameter field. In terms of the quality of light, the Pixelpar had much more red than did the S4 PAR. In white light, the S4 PAR was the winner, hands down.

But what happened next was a bit of a surprise. We used the primary colors to gel the S4 PAR and compared it to the Pixelpar with as close a color match as possible. Each of the colors we chose, Roscolux 80 (primary blue), Roscolux 91 (primary green), and Roscolux 27 (primary red) was matched very closely with the Pixelpar, at least by the eye. Technically, the Pixelpar has more than 16 million permutations of RBG color combinations. Although we didn’t look at more than 13 or 14 million (plus or minus 13.9999 million), it’s clear that there is a much more limited range of distinct colors. Without undertaking a much longer study, it would be difficult to say exactly how well a Pixelpar can match the color variation of gels, but we believe that, with the exception of some of the more esoteric colors, it seems to do a fairly good job.

In terms of the quantity of colored light, in general the Pixelpar produced more colored light than the S4 PAR with an equivalent gel. In primary blue, the Pixelpar measured 20 footcandles at the center, while the S4 PAR measured 8 footcandles. In primary red, the Pixelpar measured 26 footcandles while the S4 PAR measured 12 footcandles. And in primary green, the Pixelpar measured 30 footcandles while the S4 PAR measured 4 footcandles. In each case, the Pixelpar clearly outperformed the S4 PAR in terms of colored light output.

The color wash produced by the Pixelpar is generally uniform with few aberrations, although there is some non-uniform color in the yellow/orange region. The range of color is exceedingly good and the saturation can be controlled to some degree by varying the level of the primary colors.

For many years, it was questionable whether LED fixtures were ready for color wash applications. It’s clear now that the Pixelpar and the Pixelline make effective color wash fixtures even compared to conventional fixtures with gels.

DeMennooos schreef:

Als je vergelijking maakt over het gehele spectrum van kleuren haal je met een PixelPar een hogere output dan welke slechte kloon dan ook.