Exactly same reason, I have D4 and there is lack of distance at lower power.
I have been thinking about Sofirn BLF SP36 (blf q8 mini) too (additional to d4s) but I wonder if it is not really almost the same to D4S…. And as most of us I have too many similiar lights
I have some questions about led efficiency and the heat generated for each of this led, specifically the XP-L hi 5k Vs the SST-20 5K i made some research about this but it's not always very easy to find a clear comparison, so if somebody here would be nice enough to confirm my assumption or correct me it would be very cool.
I'll focus on the led options around 5000k cause i like neutral tint, and my question is really about the heat generated/efficiency/run time, so putting aside the tint aspect of this leds, and the flood vs the throw.
They are 4 options available for the Emisar D4S:
Neutral White - Nichia 219CT 90CRI, 5000K
Neutral White - SST20 5000K
Neutral White - XP-L HI V2 3A, 5000K
Neutral White - XP-L HD V6 3D, 5000K
-1 In terms of pure heat generated/efficiency is this ranking correct?
XP-L HD V6 3D > XP-L HI V2 3A > SST20 > Nichia 219CT 90CRI
-2 In general with the same battery/driver/host can we assume that leds options with more lumen always mean more efficiency so less heat generated?
I was interested by the SST20 5000k seem a nice option with no extra cost for a pretty balanced beam, but most of the talking in this thread revolve around the 3k/4k version with a high CRI and i can't manage to find a clear comparison about the power consumption/heat generated of the XP-L HI V2 3A 5k vs the SST-20 5k.
For people who like high CRI the SST-20 3k/4k seem to be an obvious choice and a nice upgrade over the Nichia 219C, more lumen, less heat generated and still a nice tint.
For the neutral tint the XP-L HI V2 3A 5K still seem to be the best choice over the SST-20 5K. ( i'm putting aside the 15$ extra cost and still talking about pure efficiency/heat generated/run time )
I have read on this forum that the SST-20 pulls more current with a fet driver, that was around 25% more over the XP-L hi, but the led tint was not specified so I'm still a bit lost and can't manage to find exact numbers for the 5k version.
-3 So last but main question, the difference between the XP-L HI V2 3A, 5000K and the SST20 5000K is really noticeable in terms of heat generated or it's more of a close gap?
About the power consumption with a fet driver the SST-20 will consume 10/15/20/25% more current over the XP-L HI?
I have been experimenting with XPL-Hd and XPL-Hi in 3000k 80+ CRI and find that they have noticeable pink undertones. Curious if these are closer to the blackbody line.
It does have a light green tint to it in moon mode, that gets whiter the brighter it gets. And I cant say with complete confidence that all the green is gone at full power, but its real close.
It sure throws better than the XPL-HI 5000k, perhaps adding close to a hundred yards in throw.
And it has better definition than the HI, to me. I am able to see texture on trees and stuff that I can not with the HI. Could the greenish tint help?
After all is said and done, the SST-20 is my new fav out of the Nichia, the S4 3D and the XPL-HI.
Of course I may prefer the S4 3D 4885k in thick timber, which I have not had a chance to try out yet. I hate light reflecting back into my eyes, it blinds me somewhat and is a distraction. With the reddish tint, I notice very little reflection.
So I have a question: I just received my d4s (black, D4S SST20/5,000K, red aux) and in comparison to my 2 d4 flashlights the LEDs do not line up real well under the TIRs…. it makes for an oblong beam on one end…… Is this normal for this config? Am I being too picky?