I received the two FW3A, standard dark gray aluminum and the copper. The copper is drop dead gorgeous! The finish is very shiny, almost mirror like. It is the most beautiful copper light I’ve seen yet. Below are my test results:
Copper SST-20 4000K w/ stock Carclo and glass lens
lumens: 1,974
CCT: 3972
DUV: –0.0012
CRI: 95.2
R9: 83.8
Rf: 93
Rg: 102
Copper SST-20 4000K w/ UCL glass lens
lumens: 2,051
CCT: 3960
DUV: –0.0024
CRI: 95.6
R9: 86.0
Rf: 93
Rg: 103
Gray aluminum with stock non-Carclo optics (no glass lens)
lumens: 1,819
CCT: 3898K
DUV: –0.0025
CRI: 95.8
R9: 86.9
Rf: 93
Rg: 103
Gray aluminum with Carclo 10509 optics (no glass lens)
lumens: 1,767
CCT: 3982K
DUV: –0.0031
CRI: 96.2
R9: 88.6
Rf: 93
Rg: 103
Gray aluminum with Carclo 10509 optics (w/ UCL glass lens)
lumens: 1,802
CCT: 3904K
DUV: –0.0029
CRI: 96.3
R9: 87.7
Rf: 93
Rg: 103
Gray aluminum with Carclo 10509 optics (w/ UCL glass lens) at low output (first blink)
lumens: 99
CCT: 4052K
DUV: 0.0014
CRI: 96.4
R9: 93.4
Rf: 89
Rg: 98
E07 SST-20 4000K FB4 tint bin for comparison:
CCT: 3822K
DUV: 0.0028
CRI: 93.7
R9: 76.5
Rf: 93
Rg: 101
The SST-20 4000k in the FW3A matches the FD2 tint bin. It looks much better than the widely used FB4 tint or 219C 90CRI and high output is almost as good as Cree 5A/5D tint.