ssschen, that’s going to be a subjective thing… you’re going to have to set it at what YOU are comfortable holding. I mod lights virtually daily, machine aluminum and copper on the lathe… my hands are so used to extreme heat that my idea of comfortable to hold is going to be much different than a lot of peoples. Almost like asking what pepper is too hot to eat, depends doesn’t it?
Making 5685 lumens and 5171 lumens, respectively. Both from Sony VTC5A cells.
For clarification, both of these are made with the MCPCB and Optic that Hank designed/chose for use with the Emisar D4S. Both of these are running Bistro from an FET+1 driver.
Depends how long you hold it. Slow burn is a thing. And it’s insidious as you don’t feel it until long after it’s done. There are people who got burns to their legs from using car seat heaters in warm weather. I once burned myself lightly (no damage but skin was sensitive) by holding a warm soup bowl that never actually felt painfully hot. I just held it for a fairly long time.
Okay, in that case it stabilized at a higher output than I would expect. With no cooling or heat sinking, I figured it would settle lower.
During tests I generally have a fan blowing at the light, from 1m away, at the fan’s lowest speed. I’m not sure if this is a good way to simulate the heat-sinking of a hand, but it does at least make a pretty measurable difference compared to stale air. My thermal testing is pretty imprecise though.
This may have already been discussed earlier. But is it possible to mod the light to a different aux led? I don’t love the blue. Would much rather green or even red. Is this doable?
Here’s what the AUX LEDs look like on the meter. This is with the optics and a slight Zircon minus green on top so on the CIE graph the LEDs would actually sit just a bit higher.
Regarding the step-down rate. Keep in mind that if you don’t start on turbo, you should have longer before the light steps down from your initial output levels.
When setting the ceiling, 1 click sets it to 150. 2 clicks set it to 149. 3 clicks for 148. And so on.
I’m still not sure I understand the question, but this is how I recommend configuring that:
Look at a thermometer. Mine says 22 C, so we’ll use this value.
Go to thermal config mode.
Calibrate the sensor: At the first “buzz”, click 22 times to tell the light it is now 22 C.
Wait until the light shuts itself off. If you haven’t changed the value already, this should leave the temperature limit at the default value of 45 C. Otherwise, you could click 15 times at the second “buzz” to set the limit to 45 C. (limit = 30 C plus N clicks)
I received my D4S from Hank today. XPL hi equals on happy fat guy in a wheelchair. Civil twilight at 8:24 pm EST. Toykeeper and all involved THANK YOU VERY MUCH!!! All caps very intentional