*BLF LT1 Lantern Project) (updated Nov,17,2020)

[mdeni]

@DBSAR

@The_Driver

@Phlogiston

I do have a question about the FET driver tint shift, though. Would the tint ramping capability let people manually correct for the tint shift at a given brightness? Or would the shift be in a different direction to the ramp within the colour space?

Tint ist not CCT (color temperature). Tint is a deviation form perfect white light (which can be warm, cool or in between, always on the line of the black body radiator). Tint is when the light has a green tinge or is red-tinted for example.

The lantern will be able to change its CCT, not the tint.

Thats why were hoping the manufacturer can source the LED tint bins from Samsung listed earlier to keep the tint either close, on or below the BBL.

That is critical. Tint above the BBL can be very unpleasant for staying longer periods of time, and it makes foods and people uglier. If we are building the “ultimate” light we should strive towards getting the best output available. And that includes below BBL tint, and R9 values above 90. This chosen led has tint in the green, and R9 values that are between 60-70 as far as I can see Samsung LH351D color testing - #4 by maukka which is not ideal for a BLF lantern, since we are choosing the parts.

Since we are set on these leds, at least we can try to find some some samples from Samsung that are lower in the BBL which will boost the R9 values a bit, and make the light more pleasant for longer usage.