Eagltac T20c2 ANSI FL-1 question

I just looked up the ANSI FL-1 guidelines This light ramps down from 720 Lums to 5** something lums after three min. The ansi test starts its lums test after 3 mins. Is this why there is a *720 on the eagletac site then it shows 580 Ansi lums? is 580 after the ramp down? I'm cornfused.

580 is indeed after 3 minutes.

720 is the emitter lumens. 580 is the actual out-the-front lumens.

So after it ramps down a notch its 580?

When it ramps down after 3 minutes, it will measure ~500 lumens at the emitter. That translates to ~395 OTF.

enomosiki said:

When it ramps down after 3 minutes, it will measure ~500 lumens at the emitter. That translates to ~395 OTF.

Click to expand...

I thought that ANSI isn't measured at the emitter, but 1 metre in front of the light.

So for what I know. It's when you turn the light on it's 720 on the emitter- and after 3 minutes it's 580 on 1 metre in front of the light.

kj2 said:

I thought that ANSI isn't measured at the emitter, but 1 metre in front of the light.

So for what I know. It's when you turn the light on it's 720 on the emitter- and after 3 minutes it's 580 on 1 metre in front of the light.

Click to expand...

Ah, now I see that ET has changed their measurement to ANSI.

Anyway, when you turn on the light, it's 720 at the emitter, while the actual ANSI figure is 580. After the ramp down, it drops down to 500 at the emitter, 395 ANSI.

Ahhhh gotcha. Thats the answer I was looking for.

yes, :goodjob:

and, switch light on/off every 3.5 min or so and it will revert back to 720L/580ANSI
:devil:

Tod

enomosiki said:

...
when you turn on the light, it's 720 at the emitter, while the actual ANSI figure is 580. After the ramp down, it drops down to 500 at the emitter, 395 ANSI.

Click to expand...