I don’t have a D4 to measure yet, but as far as I can tell it will likely go from about 1 lumen (maybe lower?) up to about 3000 lumens (ish, depends on emitter type and battery type). My light box maxes out at about 3000 lumens, and I would not be surprised if the D4 exceeds that. If it does, I’ll measure it in some other way.
There is no gap in the ramp. It is a smooth slope all the way from 1 lm to ~3000 lm, with 150 steps between.
This is only an estimate, based on my Q8 prototype which should be very similar, but I expect the 150 output levels will be very similar to this:
1: 1.00 lm
2: 1.30 lm
3: 1.64 lm
4: 2.05 lm
5: 2.52 lm
6: 3.05 lm
7: 3.66 lm
8: 4.34 lm
9: 5.09 lm
10: 5.94 lm
11: 6.87 lm
12: 7.89 lm
13: 9.01 lm
14: 10.23 lm
15: 11.56 lm
16: 13.00 lm
17: 14.55 lm
18: 16.22 lm
19: 18.02 lm
20: 19.94 lm
21: 21.99 lm
22: 24.18 lm
23: 26.51 lm
24: 28.99 lm
25: 31.61 lm
26: 34.39 lm
27: 37.33 lm
28: 40.43 lm
29: 43.70 lm
30: 47.14 lm
31: 50.76 lm
32: 54.55 lm
33: 58.53 lm
34: 62.70 lm
35: 67.06 lm
36: 71.63 lm
37: 76.39 lm
38: 81.36 lm
39: 86.54 lm
40: 91.93 lm
41: 97.55 lm
42: 103.39 lm
43: 109.46 lm
44: 115.76 lm
45: 122.30 lm
46: 129.08 lm
47: 136.10 lm
48: 143.38 lm
49: 150.91 lm
50: 158.70 lm
51: 166.76 lm
52: 175.08 lm
53: 183.67 lm
54: 192.54 lm
55: 201.70 lm
56: 211.14 lm
57: 220.86 lm
58: 230.89 lm
59: 241.21 lm
60: 251.83 lm
61: 262.76 lm
62: 274.01 lm
63: 285.57 lm
64: 297.45 lm
65: 309.65 lm
66: 322.19 lm
67: 335.06 lm
68: 348.26 lm
69: 361.81 lm
70: 375.71 lm
71: 389.96 lm
72: 404.56 lm
73: 419.52 lm
74: 434.85 lm
75: 450.55 lm
76: 466.62 lm
77: 483.07 lm
78: 499.90 lm
79: 517.11 lm
80: 534.72 lm
81: 552.72 lm
82: 571.12 lm
83: 589.93 lm
84: 609.14 lm
85: 628.77 lm
86: 648.82 lm
87: 669.28 lm
88: 690.17 lm
89: 711.50 lm
90: 733.25 lm
91: 755.45 lm
92: 778.09 lm
93: 801.17 lm
94: 824.71 lm
95: 848.71 lm
96: 873.17 lm
97: 898.09 lm
98: 923.48 lm
99: 949.35 lm
100: 975.69 lm
101: 1002.52 lm
102: 1029.83 lm
103: 1057.64 lm
104: 1085.94 lm
105: 1114.75 lm
106: 1144.05 lm
107: 1173.87 lm
108: 1204.20 lm
109: 1235.05 lm
110: 1266.42 lm
111: 1298.32 lm
112: 1330.75 lm
113: 1363.71 lm
114: 1397.22 lm
115: 1431.27 lm
116: 1465.87 lm
117: 1501.02 lm
118: 1536.73 lm
119: 1573.00 lm
120: 1609.83 lm
121: 1647.24 lm
122: 1685.22 lm
123: 1723.78 lm
124: 1762.93 lm
125: 1802.66 lm
126: 1842.99 lm
127: 1883.91 lm
128: 1925.44 lm
129: 1967.57 lm
130: 2010.31 lm
131: 2053.66 lm
132: 2097.64 lm
133: 2142.23 lm
134: 2187.46 lm
135: 2233.32 lm
136: 2279.81 lm
137: 2326.94 lm
138: 2374.72 lm
139: 2423.15 lm
140: 2472.24 lm
141: 2521.98 lm
142: 2572.38 lm
143: 2623.45 lm
144: 2675.19 lm
145: 2727.61 lm
146: 2780.71 lm
147: 2834.50 lm
148: 2888.97 lm
149: 2944.14 lm
150: 3000.00 lm