Everything You Need To Know About The Rainbow 2 & Double Rainbow

Рет қаралды 1,932

Garrett Sammons

Күн бұрын

Пікірлер

@derik_niez 2 жыл бұрын

“It’s a double rainbow, all the way- oh my god, almost a triple rainbow” 🥹🥲

@cjadams7434 2 жыл бұрын

Though i do wonder which ones the 2ft or 4 ft ones make more sense on corporate shoots

@zhiyingdi3720 Жыл бұрын

Thank you for this video!👍🏻 Weird thing is that I got a 4' Double Rainbow unit a while ago but had spotted some serious problems with its abnormally weak blue channel in RGB mode, which caused -- 1) its pure blue looking a lot more violet than any other RGB fixture's pure blue (including Quasar Science's own original rainbow line) 2) its cyan preset looking far more bluish-green than greenish-blue (or something in the middle) since the light's green channel is so much stronger than its blue channel (more than 3 stops brighter), which wasn't a problem with the original Quasar rainbow tube's cyan preset. 3) very noticeably ungradual stepping in its overall brightness (or even flicker-like) when displaying rainbow pixel effect in 48 pixel groups (as opposed to my other pixel tube fixtures' rainbow effect that can transition into/out from blue a lot more smoothly), although the issue is slightly less visible after lowering the number of its pixel groups. 4) just the nearly unusable level of dimness in its blue channel in general, cuz I don't see a point in using this "100w" tube for blue light when it can be almost overpowered by two 5w Aputure MC's or easily overpowered by one 40w Aputure T4c tube's blue light. I first thought that I simply got a faulty unit, but after spotting the exact same problems in the subsequent two replacement units from Quasar Science as well as in the demo unit at my local film gear retailer I've come to believe that it's actually a common problem with this whole product line, despite how perfect every reviewer I've seen on KZbin claims it to be. So I'm just wondering if you happen to also experience the same issues with your units or if you think I'm just looking at it wrong?🤔🤗

@garrettsammons Жыл бұрын

You bring up a really interesting point (which I happen to know the answer to). In chatting with the Quasar tech team, they’ve explained their color/power output. Each color channel is uniquely tuned to match the same color exposure measurements. The theory behind it goes (and I’m severely paraphrasing here)… The blue channel in camera sensors is the first to blow out, followed by red, etc etc etc down the color spectrum. Because of that, QS finely tuned each color to output not the same luminous level, but the same color intensity. You can dial in the color you want, expose for that color, and if you decide to alter the color, change the color, taste color effects, etc. your exposure measurements won’t change at all. So it’s wildly different than other tube lights, but weirdly helpful in certain shooting environments.

@zhiyingdi3720 Жыл бұрын

@@garrettsammons Thanks for responding🙌🏼 I visited Quasar Science in LA a couple days ago, and Tim & Ray at the office were very generous with their time helping me understand how the light's blue channel was designed to behave, which was pretty similar to your explanation -- blue being easier to clip/blow out. (with additional information about why using a lightmeter to measure the light's RGB channels' brightness individually may produce inaccurate results and how important matching the light's base CT to the camera's WB is to getting a consistent exposure on camera across the hue range) After I compared my unit with theirs, I saw no clear difference between the two lights' blue channel output, so I thought that I probably did originally test the light wrong and that following their tips could give a drastically improved result on the blue's brightness on camera. I took the unit back home with me and conducted another simple test on camera with everything set to what they suggested, but its pure blue still looked way dimmer than it needs to be, which especially shows with the camera directly pointing at the light displaying pixel rainbow effect and you can see that when the shot is exposed for the pure blue all the other colors on the light are either clipped or near clipped, and when all the other colors look well-exposed only pure blue looks under-exposed, and the result was pretty much the same with the camera filming other subjects being over-exposed by the light in its color chase mode at 100% and you can see that the subject looks blown-out in the shot at every hue except blue and when the shot's exposed for the subject at every other hue only blue makes it look under-exposed, so I couldn't really find a reason to believe that's how the Double Rainbow was supposed to behave. When I showed my test clips to Ray, even he agreed that it does seem like there's a major dip in output between the light's blue channel & its other two channels, and said that he'll need to bring it up to Tim, so my guess would be that they probably did design the light with preventing the blue channel clipping in mind but that aspect got eventually somehow overcompensated & resulted in a rather abnormally weak blue channel?🤔

@angermasterclass7008 2 жыл бұрын

Fantastic review. I especially appreciated the breakdown of the Osmium Mounting System and Accessories. Was looking for that!

@DanielSaintival 2 жыл бұрын

FINALLY Garrett, I was suppose to rent out 2 of the quad 4' q50r's last week, but shoot got cancelled (Covid). There aren't much reviews/great commentary on the Quasar Rainbow lights. I didn't know how beastly these things could be, great video!