Found above in this thread [Reference] Nichia E17A/E21A (2000K - 6500K, R9050/R9080, color) CCT and tint shots
I suspect itâs just an approximation and also depends on the outputs of the 2 LEDs being mixed, say at equal current.
Yes the Duv with optics I could test. In the middle of the beam where test is conducted, I could see how 10 degree TIR has more of the hotspot, whereas 60 has more corona mixed in?? Very interesting.
. Cannga, slightly off topic, but I am about to order the S21D with 8A driver in 219b 4500K and 10 degree bead lense, and am wondering how good the battery needs to be. I can get Samsung 50E 10A for $5, or Samsung 50S 25A for $9. Will the 50S perform better for the demands of this driver, or would they be about the same? How good is the battery Simon bundles with this? Is it about the same as 50E?
I assume by âhow goodâ you meant if the battery needs to be the power type, with high current capability? I am no expert, but in my limited experience with the batteries I have (Samsung 30T, 40T, Wurkkos 5000 mAh OEM, Liitokala Lii-50E coming from Convoy), the answer is no, batteryâs current capability doesnât seem to affect throw or brightness with S21D. S21D doesnât draw much current, the FET version maybe, but not 8A buck version.
Only with the ultra-bright power hungry LEDâs (SBT90.2, the Chinese âpowerâ leds SFH/SFN) have I noticed a difference. And here it could be quite significant. In my Wurkkos TS30S with SBT90.2, Samsung 30T and Nealsgadgets Lishen far, far outshine the stock Wurkkos battery. Repeatedly shown to be a shocking 15% output increase at Turbo turn-on.
But note that even for those powerful lights, I am using the high current battery only for âbragging rightsâ, that is for testing of throw and output. In regular, actual use, I tend to prefer battery with high 5000 mAh capacity for longer run-time.
I donât have either of the Samsungâs you mentioned but from just reading specs, 50S is really nice (high capacity 5000 mAh, mid-high current capability 25A) but seems so pricy. I am sort of leaning towards Samsung 50E. I also just noticed the very popular and excellent 40T (mid capacity 4000 mAh, high current 30-35A) is on sale for so cheap at 18650 Battery â(click here)â:Samsung 40T 21700 4000mAh Battery (40T3). Among the Samsungâs, 40T is probably my first choice, especially if you are considering âpowerâ lights in future.
thanks, that is helpful. Iâm really not concerned with better performing turbo if it means the battery costs 80% more (50S vs 50E), or if it means sacrificing capacity from 5000 mAh to 4000 mAh and still more expensive (50E vs 40T), for this light.
I did pay $5 more for Keeppower 26650 vs. Convoyâs ordinary bundled battery with the M3c 70.3, as I thought if I ever need temporary max power throw it is that light that I will be using, not the S21D. Now Iâm wondering if that was even necessary, but it was easy and I didnât have to make an order from a battery retailer.
Potential S21F delivery soon?!
I think it depends a little on how youâll use the light. Even if you donât mind a scrub of turbo brightness, if youâll use turbo briefly or use higher output frequently, you wonât see the full 5000-ish capacity from the 50E and in that case youâll be better off with a higher drain cell that still has good capacity like the 40T or Molicell, etc. Often when you approach the upper current capacity of a cell you lose enough through voltage sag and heat that the lower capacity/higher drain cells will perform better on high and also end up giving you about the same capacity/run times as the more stressed cell. You might consider buying the Samsung 50G instead. In the US so far I can only find that one under the Vapcell G50 wrap (liion wholesale has them for about $8). Great cell. At this point I think the jury is out on the 50SâŚseems great on the surface but stress tests are showing pretty poor lifespan with early and aggressive loss of capacityâŚseems best for loads that are lower and steadier current. All that said, if you use the light like many do with brief sessions and lower to medium output, any cell will do fine and with the higher capacity ones you will see an appreciably increased run time overall.
Iâm located in Southern California and USPS says my S21F will arrive Monday!
O_O
You must have been 1st S21F customer. 
Mine only has âdeparted from country,â on airplane somewhere.
You ordered shortly after me, check the number on USPS
USPS doesnât have it yet. But âimport custom clearance completeâ! I canât wait to get my hands on this light. Is this Convoyâs first tint ramping light, any Convoy expert here?
Iâve been thinking how CCT ramping would be done. Convoy UI below - I seem to see a conflict?
With flashlight on, click and hold seems assigned to both changing brightness and changing CCT?
Mode operation instructions:
Flashlight is turned off, click the button â> the flashlight turns on at the last brightness â> press and hold the button, the brightness goes up â> release the button,then press and hold the button again, the brightness goes down.
Flashlight is turned off, press and hold the button â> moonlight mode (this brightness will not be remembered)
Flashlight is turned off or turned on, double click the button â> turbo 100%,
Flashlight is turned on, click and hold button â> color temperature change mode
Flashlight is turned off or turned on,click the button 3 times â> strobe, double-click to enter the SOS, double-click again to enter the beacon, and click to return to the previous brightness
Flashlight is turned off, click the button 4 times â> tactical mode, only 100%, click the button again 4 times to exit the tactical mode.
Flashlight is turned off, click the button 5 times â> voltage detection (* means âflashâ, pause means 3.7V,)
Flashlight is turned off, click the button 6 times â> stepless mode is switched to the 4 modes (1â10â40â100)
Flashlight is turned off, click the button 10 times â> lock mode, the flashlight will flash once under any operation, indicating that the flashlight is locked. Click the button again 10 times to exit the lock mode, please note that this is the only way to unlock.
Might have to get it in hand and see what it actually does, but I suspect weâre just looking at 1H and 2H stated differently than TK did with Anduril. Yes, this is his first tint ramper. I donât have any interest in these from anybody, but Iâm curious to see if he implemented the ramping with a logarithmic curve rather than linear, which is the minor irritation that his normal/previous ramping firmware provides. If his driver maker got that right, itâd be great to see that in new drivers for normal mode ramping.
I wonder if there will be an option to reset the LEDs to 50/50. Anduril has 3H & 9H.
You got it right on the nose. Per Simon double click and hold.
Not sure - we know itâs stepless so Iâm not sure the mid point will be âmarked.â Iâm asking Simon (the pestering continues :partying_face: ).
I assume I could measure the point where the CCT hits approximately what we think the mid point is. Wonder whether that would be point of maximum output?
Just received the light! Great light for $30. Going to try it with 10 flat & 30 bead after work.
Niiice. 1st customer of 1st Convoy âshape shifter.â Fingers crossed no surprise.
At max brightness, the tint shifts by reducing output of one CCT group? Iâm thinking point of max brightness would be âmid-pointâ where all LEDS get say the max 2A? Comment anyone?
Hereâs the S21F side by side with the D4K and S21D.
Initial impressions:
Switch isnât as good as Hanks, along with the UI. Has a nice feel in hand without being too large. Great product for half the price of Hanks.
Cannga will have a better review when he receives it 
Oh Iâm familiar with that switch. Looks the same as the one on my M21E and F and if so not my favorite. Short travel and somehow just hard to push/engage. My favorite side switch is for example the one on D4V2, Sofirn IF25a, and Wurkkos TS30S and Convoy is not like that.
Hey cannga, thoughts on 10622 optic vs 10 degree flat?
I noticed with the 10 flat on the S21F, it doesnât look as clean and the round outer edges look weird. I have to use 30deg bead to clean it up a bit
Can you make few beamshots?