New(to me) cheap 50W fresnel type LED - worth a shot? (like Boltzen/Caliber/J-500)

nyvz said:
Pretty sure the Mini 20C is 20W... Likely pretty dim especially if it's only 20W at 4300K and 10W at 5600K and 3200K. If Aputure's naming convention follows from their COB line which puts the max power draw in the model number that is. Pretty sure I saw a video that said it was 20W as well.
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Thanks!

On another note....found their marketing about other bi-color LED fresnels producing double shadows was a bit misleading. AFAIK the Arri's, Dedos, & Practilites, do not have this issue, & are substantially brighter.
 
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I've suggested on they Facbook group that they stop using ambiguous marketing with their lighting.
The latest one is regarding the COB 300D - '2K output for under $1K' WTF does that mean?
 
Duncan Craig said:
I've suggested on they Facbook group that they stop using ambiguous marketing with their lighting.
The latest one is regarding the COB 300D - '2K output for under $1K' WTF does that mean?
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Yeah I agree it's pretty annoying. But they're in the business of selling lights. Their output claims will do nothing but help them sell more units so why would they adjust their language? Maybe they will when they're established enough. I think standards will come. At the moment it's CRI/TLCI etc. Output will follow. I largely blame "gear sites" that accept the manufacturer's claims, partly because it helps their article titles - "Say Goodbye to Your 1.2k PAR" (I made that up) and partly because their focus is on cameras and they don't have the lighting experience to extract more than the basic information.

I can live with the colour and output claims but draw the line at the "Fresnel replacement". Fresnels, more than anything, are used for their abilities to control the bare light. Grab ANY of the Fresnel LEDs and make a "slash" on a wall. Do the same with a tungsten Fresnel. The LED slash will be absolutely pathetic. I really don't mind the push towards LEDs but call things what they are. I've got access to a 650 daylight LED "Fresnel", and an Arri 650 real Fresnel and am going to do some comparisons. I've got a 575w HMI too and just need to get my hands on a "575w replacement".

Would anyone be interested in a test that only deals with shaping the light - mostly differences in spot/flood angles and how effective barn doors are?

Apologies for the OT rant.
 
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Duncan Craig said:
The latest one is regarding the COB 300D - '2K output for under $1K' WTF does that mean?
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I've reached out to Cinema5D to clarify, but the number they quoted was 31,000 lux at 1m distance. They didn't specify the beam angle, so that's why I am looking for some confirmation from them. The light has several beam angles it can possibly do: 120s degree bare "bulb", 60 degrees with a reflector, and 12-42 degrees with the fresnel.

According to Arri's photometrics calculator, an Arrilite 2000 plus at full flood (53 degrees) is 27,500 lux at 1 meter, a T2 fresnel is 32,500 at 1 meter (60 degree flood), and an M8 HMI is 40K lux at a meter (60 degree flood).

If the quoted number of 31,000 lux at 1 meter is for the 60 degree reflector, then it plays in the same ballpark as an 800 HMI and 2K tungsten. If the quote is for the 120 degree angle, then it's more powerful than all of them. If it's with the fresnel on, then it's definitely weaker.

Edit: Just got clarification, 31,000 lux is with the 60 degree reflector. It's important to note that they've also designed this to have no hotspots, so it's an even 31,000 lux from edge to edge of the beam, other lights might have a brighter spot in the middle. So that might mean it's still throwing more total light than the others if the others have a lot of drop-off.
 
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During a job I briefly tested a ARRI L10-C against a one of their 1.2K HMI Fresnels, & the HMI's beam was much better defined.
 
AT NAB I looked at a bunch of the budget LED Fresnels like the Razyr 7 and the NanGuang CN-200 and 100. A lot of them had plastic rather than glass lenses and the sharpness of the beam was pathetic. I saw some others with glass fresnels which were better but still didn't seem as sharp as what I'm used to though I didn't have anything to compare with side by side. Apparently the glass fresnels absorb more light and these guys all want to tout their output. To me a Fresnel without a sharp pattern is literally "pointless."
 
LennyLevy said:
AT NAB I looked at a bunch of the budget LED Fresnels like the Razyr 7 and the NanGuang CN-200 and 100. A lot of them had plastic rather than glass lenses and the sharpness of the beam was pathetic. I saw some others with glass fresnels which were better but still didn't seem as sharp as what I'm used to though I didn't have anything to compare with side by side. Apparently the glass fresnels absorb more light and these guys all want to tout their output. To me a Fresnel without a sharp pattern is literally "pointless."
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Can you comment on how bright the RAYZR 300 daylight is? Build quality?
 
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