Retun to Project Main Page
                 
microseconds milliseconds Register # Displayed   Range # of steps in Register EV (=1 Stop) Register Value
125 0.125 0 1/8000 s   0.125 0  
150 0.15 1 1/6666 s   0.15 1  
188 0.1875 2 1/5333 s   0.1875 2  
250 0.25 3 1/4000 s   0.25 3  
300 0.3 4 1/3333 s   0.3 4  
375 0.375 5 1/2666 s   0.375 5  
500 0.5 6 1/2000 s   0.5 6  
600 0.6 7 1/1666 s   0.6 7  
750 0.75 8 1/1333 s   0.75 8  
1000 1 9 1/1000 s   (cut and shift according to 'cs' calculated in sheet4) 1 9  
1200 1.2 10 1/833 s   1.2 10  
1500 1.5 11 1/666 s     -30 -10 1.5 11  
2000 2 12 1/500 s     -29   2 12  
2400 2.4 13 1/416 s     -28   2.4 13  
3000 3 14 1/333 s     -27 -9 3 14  
4000 4 15 1/250 s     -26   4 15  
4800 4.8 16 1/208 s     -25   4.8 16  
6000 6 17 1/166 s     -24 -8 6 17  
8000 8 18 1/125 s     -23   8 18  
9600 9.6 19 1/104 s     -22   9.6 19  
12000 12 20 1/83 s     -21 -7 12 20  
16000 16 21 1/60 s     -20   16 21  
19200 19.2 22 1/52 s     -19   19.2 22  
24000 24 23 1/41 s     -18 -6 24 23  
32000 32 24 1/30 s   * -17   32 24  
38400 38.4 25 1/26 s     -16   38.4 25  
48000 48 26 1/20 s     -15 -5 48 26  
64000 64 27 1/15 s     -14   64 27  
76433 76.43312102 28 1/13 s     -13   76.43312102 28  
94862 94.86166008 29 1/10 s     -12 -4 94.86166008 29  
125000 125 30 1/8 s     -11   125 30  
150000 150 31 1/6 s     -10   150 31  
187500 187.5 32 1/5 s     -9 -3 187.5 32  
250000 250 33 1/4 s     -8   250 33  
300000 300 34 0.3 s     -7   300 34  
375000 375 35 0.4 s     -6 -2 375 35  
500000 500 36 0.5 s     -5   500 36  
600000 600 37 0.6 s     -4   600 37  
750000 750 38 0.8 s     -3 -1 750 38  
1000000 1000 39 1 s     -2   1000 39  
1333333 1333.333333 40 1.333 s     -1   1333.333333 40  
1666667 1666.666667 41 1.666 s   cs 0 0 1666.666667 41  
2000000 2000 42 2 s     1   2000 42  
2666667 2666.666667 43 2.666 s     2   2666.666667 43  
3333333 3333.333333 44 3.333 s     3 1 3333.333333 44  
4000000 4000 45 4 s     4   4000 45  
5333333 5333.333333 46 5.33 s     5   5333.333333 46  
6666667 6666.666667 47 6.67 s     6 2 6666.666667 47  
8000000 8000 48 8 s     7   8000 48  
10333333 10333.33333 49 10.333 s     8   10333.33333 49  
12666667 12666.66667 50 12.666 s     9 3 12666.66667 50  
15000000 15000 51 15 s     10   15000 51  
20000000 20000 52 20 s     11   20000 52  
25000000 25000 53 25 s     12 4 25000 53  
30000000 30000 54 30 s     13   30000 54  
40000000 40000 55 40 s     14   40000 55  
50000000 50000 56 50 s     15 5 50000 56  
60000000 60000 57 1m   * 16   60000 57  
80000000 80000 58 1m 20s     17   80000 58  
100000000 100000 59 1m 40s     18 6 100000 59  
120000000 120000 60 2m     19   120000 60  
160000000 160000 61 2m 40s     20   160000 61  
200000000 200000 62 3m 20s     21 7 200000 62  
240000000 240000 63 4m     22   240000 63  
320000000 320000 64 5m 20s     23   320000 64  
400000000 400000 65 6m 40s     24 8 400000 65  
480000000 480000 66 8m     25   480000 66  
640000000 640000 67 10m 40s     26   640000 67  
800000000 800000 68 13m 20s     27 9 800000 68  
960000000 960000 69 16m     28   960000 69  
1280000000 1280000 70 21m 20s     29   1280000 70  
1600000000 1600000 71 26m 40s     30 10 1600000 71  
1920000000 1920000 72 32m   1920000 72  
2560000000 2560000 73 42m 40s   2560000 73  
3200000000 3200000 74 53m 20s   3200000 74  
3840000000 3840000 75 1h 4m   3840000 75  
5120000000 5120000 76 1h 25m 20s   5120000 76  
6400000000 6400000 77 1h 46m 40s   6400000 77  
7680000000 7680000 78 2h 8m   7680000 78  
10240000000 10240000 79 2h 50m 40s   10240000 79  
12800000000 12800000 80 3h 33m 20s   12800000 80  
15360000000 15360000 81 4h 16m   15360000 81  
   
                 
Formatting Table
Table of Exposure values in 1/3 EV steps in microseconds
Register # 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81
  formula 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81,  
values to copy 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81,
microseconds 125 150 188 ## ## 375 500 600 750 1000 1200 1500 2000 2400 3000 4000 4800 6000 8000 9600 12000 16000 19200 24000 32000 38400 48000 64000 76433 94862 1E+05 150000 187500 250000 300000 375000 500000 600000 750000 1000000 1333333 1666667 2000000 2666667 3333333 4000000 5333333 6666667 8000000 10333333 12666667 15000000 20000000 25000000 30000000 40000000 50000000 60000000 80000000 100000000 120000000 160000000 200000000 240000000 320000000 400000000 480000000 640000000 800000000 960000000 1280000000 1600000000 1920000000 2560000000 3200000000 3840000000 5120000000 6400000000 7680000000 10240000000 12800000000 15360000000
  formula 125, 150, 188, 250, 300, 375, 500, 600, 750, 1000, 1200, 1500, 2000, 2400, 3000, 4000, 4800, 6000, 8000, 9600, 12000, 16000, 19200, 24000, 32000, 38400, 48000, 64000, 76433, 94862, 125000, 150000, 187500, 250000, 300000, 375000, 500000, 600000, 750000, 1000000, 1333333, 1666667, 2000000, 2666667, 3333333, 4000000, 5333333, 6666667, 8000000, 10333333, 12666667, 15000000, 20000000, 25000000, 30000000, 40000000, 50000000, 60000000, 80000000, 100000000, 120000000, 160000000, 200000000, 240000000, 320000000, 400000000, 480000000, 640000000, 800000000, 960000000, 1280000000, 1600000000, 1920000000, 2560000000, 3200000000, 3840000000, 5120000000, 6400000000, 7680000000, 10240000000, 12800000000, 15360000000,
values to copy 125, 150, 188, 250, 300, 375, 500, 600, 750, 1000, 1200, 1500, 2000, 2400, 3000, 4000, 4800, 6000, 8000, 9600, 12000, 16000, 19200, 24000, 32000, 38400, 48000, 64000, 76433, 94862, 125000, 150000, 187500, 250000, 300000, 375000, 500000, 600000, 750000, 1000000, 1333333, 1666667, 2000000, 2666667, 3333333, 4000000, 5333333, 6666667, 8000000, 10333333, 12666667, 15000000, 20000000, 25000000, 30000000, 40000000, 50000000, 60000000, 80000000, 100000000, 120000000, 160000000, 200000000, 240000000, 320000000, 400000000, 480000000, 640000000, 800000000, 960000000, 1280000000, 1600000000, 1920000000, 2560000000, 3200000000, 3840000000, 5120000000, 6400000000, 7680000000, 10240000000, 12800000000, 15360000000,
Displayed 1/8000 s 1/6666 s 1/5333 s 1/4000 s 1/3333 s 1/2666 s 1/2000 s 1/1666 s 1/1333 s 1/1000 s 1/833 s 1/666 s 1/500 s 1/416 s 1/333 s 1/250 s 1/208 s 1/166 s 1/125 s 1/104 s 1/83 s 1/60 s 1/52 s 1/41 s 1/30 s 1/26 s 1/20 s 1/15 s 1/13 s 1/10 s 1/8 s 1/6 s 1/5 s 1/4 s 0.3 s 0.4 s 0.5 s 0.6 s 0.8 s 1 s 1.333 s 1.666 s 2 s 2.666 s 3.333 s 4 s 5.33 s 6.67 s 8 s 10.333 s 12.666 s 15 s 20 s 25 s 30 s 40 s 50 s 1m 1m 20s 1m 40s 2m 2m 40s 3m 20s 4m 5m 20s 6m 40s 8m 10m 40s 13m 20s 16m 21m 20s 26m 40s 32m 42m 40s 53m 20s 1h 4m 1h 25m 20s 1h 46m 40s 2h 8m 2h 50m 40s 3h 33m 20s 4h 16m
  formula '1/8000 s' '1/6666 s' '1/5333 s' '1/4000 s' '1/3333 s' '1/2666 s' '1/2000 s' '1/1666 s' '1/1333 s' '1/1000 s' '1/833 s' '1/666 s' '1/500 s' '1/416 s' '1/333 s' '1/250 s' '1/208 s' '1/166 s' '1/125 s' '1/104 s' '1/83 s' '1/60 s' '1/52 s' '1/41 s' '1/30 s' '1/26 s' '1/20 s' '1/15 s' '1/13 s' '1/10 s' '1/8 s' '1/6 s' '1/5 s' '1/4 s' '0.3 s' '0.4 s' '0.5 s' '0.6 s' '0.8 s' '1 s' '1.333 s' '1.666 s' '2 s' '2.666 s' '3.333 s' '4 s' '5.33 s' '6.67 s' '8 s' '10.333 s' '12.666 s' '15 s' '20 s' '25 s' '30 s' '40 s' '50 s' '1m' '1m 20s' '1m 40s' '2m' '2m 40s' '3m 20s' '4m' '5m 20s' '6m 40s' '8m' '10m 40s' '13m 20s' '16m' '21m 20s' '26m 40s' '32m' '42m 40s' '53m 20s' '1h 4m' '1h 25m 20s' '1h 46m 40s' '2h 8m' '2h 50m 40s' '3h 33m 20s' '4h 16m'  
values to copy '1/8000 s' '1/6666 s' '1/5333 s' '1/4000 s' '1/3333 s' '1/2666 s' '1/2000 s' '1/1666 s' '1/1333 s' '1/1000 s' '1/833 s' '1/666 s' '1/500 s' '1/416 s' '1/333 s' '1/250 s' '1/208 s' '1/166 s' '1/125 s' '1/104 s' '1/83 s' '1/60 s' '1/52 s' '1/41 s' '1/30 s' '1/26 s' '1/20 s' '1/15 s' '1/13 s' '1/10 s' '1/8 s' '1/6 s' '1/5 s' '1/4 s' '0.3 s' '0.4 s' '0.5 s' '0.6 s' '0.8 s' '1 s' '1.333 s' '1.666 s' '2 s' '2.666 s' '3.333 s' '4 s' '5.33 s' '6.67 s' '8 s' '10.333 s' '12.666 s' '15 s' '20 s' '25 s' '30 s' '40 s' '50 s' '1m' '1m 20s' '1m 40s' '2m' '2m 40s' '3m 20s' '4m' '5m 20s' '6m 40s' '8m' '10m 40s' '13m 20s' '16m' '21m 20s' '26m 40s' '32m' '42m 40s' '53m 20s' '1h 4m' '1h 25m 20s' '1h 46m 40s' '2h 8m' '2h 50m 40s' '3h 33m 20s' '4h 16m'
copy into code:
unsigned long exptime[] = {125, 150, 188, 250, 300, 375, 500, 600, 750, 1000, 1200, 1500, 2000, 2400, 3000, 4000, 4800, 6000, 8000, 9600, 12000, 16000, 19200, 24000, 32000, 38400, 48000, 64000, 76433, 94862, 125000, 150000, 187500, 250000, 300000, 375000, 500000, 600000, 750000, 1000000, 1333333, 1666667, 2000000, 2666667, 3333333, 4000000, 5333333, 6666667, 8000000, 10333333, 12666667, 15000000, 20000000, 25000000, 30000000, 40000000, 50000000, 60000000, 80000000, 100000000, 120000000, 160000000, 200000000, 240000000, 320000000, 400000000, 480000000, 640000000, 800000000, 960000000, 1280000000, 1600000000, 1920000000, 2560000000, 3200000000, 3840000000, 5120000000, 6400000000, 7680000000, 10240000000, 12800000000, 15360000000};
char* expstr[] = {"1/8000 s", "1/6666 s", "1/5333 s", "1/4000 s", "1/3333 s", "1/2666 s", "1/2000 s", "1/1666 s", "1/1333 s", "1/1000 s", "1/833 s", "1/666 s", "1/500 s", "1/416 s", "1/333 s", "1/250 s", "1/208 s", "1/166 s", "1/125 s", "1/104 s", "1/83 s", "1/60 s", "1/52 s", "1/41 s", "1/30 s", "1/26 s", "1/20 s", "1/15 s", "1/13 s", "1/10 s", "1/8 s", "1/6 s", "1/5 s", "1/4 s", "0.3 s", "0.4 s", "0.5 s", "0.6 s", "0.8 s", "1 s", "1.333 s", "1.666 s", "2 s", "2.666 s", "3.333 s", "4 s", "5.33 s", "6.67 s", "8 s", "10.333 s", "12.666 s", "15 s", "20 s", "25 s", "30 s", "40 s", "50 s", "1m", "1m 20s", "1m 40s", "2m", "2m 40s", "3m 20s", "4m", "5m 20s", "6m 40s", "8m", "10m 40s", "13m 20s", "16m", "21m 20s", "26m 40s", "32m", "42m 40s", "53m 20s", "1h 4m", "1h 25m 20s", "1h 46m 40s", "2h 8m", "2h 50m 40s", "3h 33m 20s", "4h 16m"};