Just received my sand color SST-20 4000K one. It is a little brownish in color but very nice. The real think looks and feels better in the hand than I expected from pictures. Feels very heavy and solid (heavy = good thermal mass for heat sinking) I also like the functional deep heatfins. Just wish they got rid of the tripod mount to make room for more heat fins for better cooling since I doubt many people will use the tripod mount. You cannot unscrew to lockout the light as others reported. Here are my measusrements:
Turbo on fully charged VTC6 10,080 lumens at turn on using the Texas Ace Lumen Sphere calibrated with Maukka lights. Using higher current cells should easily push it above 11,000 lumens but don’t have any to test with right now.
At turbo:
CCT: 3741K
DUV: –0.0031
Ra (CRI): 95.2
R9: 84.0
Rf: 92
Rg: 103
At turbo optics and lens removed:
CCT: 4355K
DUV: –0.0096
At 2nd lowest stepped mode (79 lumens):
CCT: 3822K
DUV: 0.0009
Ra (CRI): 97.9
R9: 98.6
Rf: 92
Rg: 99
At 2nd lowest stepped mode optics and lens removed:
CCT: 4056K
DUV: –0.0030
Removing the glass lens resulted in no significant difference in tint, meaning they used a good glass lens like the UCL lens. Also measurement show that this is likely the FA3 or FD2 tint bin and not the typical greenish FB4 tint.
For the price, this thing is unbeatable for what it offers. I’m contemplating whether I should get a purple one but there’s no other emitter option that I want to have. The 5000K and 6500K has too much greenish tint.