Ted from Aputure

13 minutes ago, tupp said:

Okay.  I look forward to those charts.

 

Thanks.

Actually, I just thought of a great idea! Since you're based in Los Angeles as well, how about I swing by one of your shoots with a light? Coincidentally, the Aputure product manager and I are already doing a tour of film sets in Los Angeles anyways. Seems like you've done your homework on lights so you could give us your input and feedback, which would be invaluable. Likewise, regarding your questions, the product manager is better suited to have this kind of a discussion with you anyways. You can post your findings back here afterwards.

Send me an email at ted.sim@aputure.com. Let's do this! 

1 hour ago, tupp said:

Thank you, but you must realize that it is sort of necessary to have an open, isolated space to properly take such readings, and that there would be too much spill and interfering clutter in/amongst trade show booths.  Of course, such an undertaking would be especially useless if you have one of the Cinegear outdoor booths.

 

So, Aputure is not providing a photometric chart for the 120T?

Hi Tupp,

The light isn't out yet or released yet. These shows are just to show what we've been working on and what is still coming out. We'll have full photometric charts once the light is released at the end of May. Not really here to argue with you. We hold to what we say about our lights and I can assure you that the 120T will be no different. 

9 hours ago, tupp said:

Thank you for taking the time to provide the PDF.

 

Indeed, the beam angle measurement is crucial to assessing overall output of a light source.  As I have mentioned earlier in this thread, a proper beam angle measurement delineates the edge of the beam at 50% (one stop down) from the brightest part of the beam.  Some manufacturers additionally include beam angles delineated at 10% of the brightest part of the beam, but that figure is usually intended to give an idea of the amount of spill outside of the main part of the beam (delineated by the 50% figure).  Less scrupulous manufacturers provide only this 10%-delineated beam angle, without the 50%-delineated figure, which is exceptionally misleading.

 

I looked at the spec sheet, and I honestly have to say that I have never in all my years seen a photometric of "Brightness (average)."  So, the "average" output at 2 meters is 610 lux (57 fc) seems very weak, but what does it mean by "average?"  It can't involve an average between the flood and spot settings, if, as you say, the reading(s) was taken when the fixture was fully flooded.  I am afraid that this "average" figure is vague and not very useful in assessing the output of the 120T.  When you get a chance, please provide proper photometrics on this fixture.

You have stated on videos that the 120T has an equivalent output of a 1500-watt tungsten fixture and someone in this very thread has suggested that the 120T is equivalent to a redhead (1k tungsten) and a blonde (2k tungsten).  Until these claims can be verified with proper photometric readings, it would probably be best to cease in making them.

 

I look forward to reviewing the proper photometrics on this fixture.

Hey tupp--the best I can say is just to come visit us at at a local convention or see for yourself when the light comes out. Cinegear would be a great time to stop by with your meter! 

Cheers,

Ted

1 minute ago, AaronChicago said:

Is that Aputure softbox going to be released at the same time?

Should be! We're going to do the best we can. 

Sorry about the late response guys, it's been a pretty insane week following up NAB. I'll have photometrics for the COB120t lights soon. Seems like there is never enough hours in the day. 

Photometrics are posted here on the second page. Keep in mind that beam-angle is one of the biggest factors in measuring photometrics. Most LED fresnels focus in all of their output into a single point then measure. This is open-face measurements at a fully-flooded angle. Rest assured, we and plenty of other people online will do luminance comparison tests--especially when the light comes out. COB120tSpecs.pdf 

COB120tSpecs.pdf

Hey Jonesy! Ted here from Aputure. Didn't get a chance to meet you at the show, but really glad that Jeremy could show you all the new tech. Thanks for the write-up and love. It really means a ton to us. 

If you don't already know about it, we're got a user group on facebook-- not unlike Black Magic  -- where we collect feedback and discuss Aputure stuff. I want to start up a live-stream once a week where we can all discuss what you guys are looking for so we can keep making it. 

Cheers,
Ted