1 | Weather | Film Speed | Aperture | (3 stop) ND8x, .9 | (4 stop) ND16x, 1.2 | 5 | 6 | 7 | (8 stop) ND256, 2.4 | 9 stop | (10 stop) ND1000 | (11 stops) | (12 stop) stacked NDs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2 | Sunny | Kentmere, Ultrafine 100 | 5,6 | 1/125th | 1/60th | 1/30th | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 |
3 | Sunny | Kentmre, Ultrafine 100 | 8 | 1/60th | 1/30th | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 | 12 |
4 | Sunny | Kentmre, Ultrafine 100 | 11 | 1/30th | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 | 12 | 26 |
5 | Sunny | Kentmre, Ultrafine 100 | 16 | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 | 12 | 26 | 61 |
6 | Sunny | Kentmre, Ultrafine 100 | 22 | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 | 12 | 26 | 61 | 142 |
7 | Sunny | Kentmre, Ultrafine 100 | 32 | 1/4 | 1/2 | 1 | 2 | 5 | 12 | 26 | 61 | 142 | 328 |
8 | light overcast | Kentmre, Ultrafine 100 | 4 | 1/125th | 1/60th | 1/30th | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 |
9 | light overcast | Kentmre, Ultrafine 100 | 5,6 | 1/60th | 1/30th | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 | 12 |
10 | light overcast | Kentmre, Ultrafine 100 | 8 | 1/30th | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 | 12 | 26 |
11 | light overcast | Kentmre, Ultrafine 100 | 11 | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 | 12 | 26 | 61 |
12 | light overcast | Kentmre, Ultrafine 100 | 16 | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 | 12 | 26 | 61 | 142 |
13 | light overcast | Kentmre, Ultrafine 100 | 22 | 1/4 | 1/2 | 1 | 2 | 5 | 12 | 26 | 61 | 142 | 328 |
14 | light overcast | Kentmre, Ultrafine 100 | 32 | 1/2 | 1 | 2 | 5 | 12 | 26 | 61 | 142 | 328 | 800 |
15 | cloudy | Kentmre, Ultrafine 100 | 2 | 1/250th | 1/125th | 1/60th | 1/30th | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 |
16 | cloudy | Kentmre, Ultrafine 100 | 2,8 | 1/125th | 1/60th | 1/30th | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 |
17 | cloudy | Kentmre, Ultrafine 100 | 4 | 1/60th | 1/30th | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 | 12 |
18 | cloudy | Kentmre, Ultrafine 100 | 5,6 | 1/30th | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 | 12 | 26 |
19 | cloudy | Kentmre, Ultrafine 100 | 8 | 1/15th | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 | 12 | 26 | 61 |
20 | cloudy | Kentmre, Ultrafine 100 | 11 | 1/8th | 1/4 | 1/2 | 1 | 2 | 5 | 12 | 26 | 61 | 142 |
21 | cloudy | Kentmre, Ultrafine 100 | 16 | 1/4 | 1/2 | 1 | 2 | 5 | 12 | 26 | 61 | 142 | 328 |
22 | cloudy | Kentmre, Ultrafine 100 | 22 | 1/2 | 1 | 2 | 5 | 12 | 26 | 61 | 142 | 328 | 800 |
23 | cloudy | Kentmre, Ultrafine 100 | 32 | 1 | 2 | 5 | 12 | 26 | 61 | 142 | 328 | 800 | 1755 |
24 | or red | or 3 stop + yellow | or 3 stops + orange | or 3 stops + red | or 3 stops + 4 stops | or 8 stops + yellow | or 8 stops + orange | or 8 stops + red | or 9 stops + red | ||||
25 | or 4 stops + yellow | or 4 stops + orange | or 4 stops + red | or 9 stops + orange | or 9 stops + 3 stops | ||||||||
26 | Kentmere 100 | 1.21 | 20 | 37.51857152 | |||||||||
27 | Custom | factor | metered time | corrected time | |||||||||
28 | Kentmere 100 | 1.21 | 1 | 1 | |||||||||
29 | Kentmere 100 | 1.21 | 2 | 2.313376368 | |||||||||
30 | Kentmere 100 | 1.21 | 5 | 7.010576056 | |||||||||
31 | Kentmere 100 | 1.21 | 10 | 16.21810097 | |||||||||
32 | Kentmere 100 | 1.21 | 30 | 61.27971238 | |||||||||
33 | Kentmere 100 | 1.21 | 45 | 100.0891824 | |||||||||
34 | Kentmere 100 | 1.21 | 60 | 141.7630384 | |||||||||
35 | Kentmere 100 | 1.21 | 90 | 231.5439493 | |||||||||
36 | Kentmere 100 | 1.21 | 120 | 327.9512629 | |||||||||
37 | |||||||||||||
38 | Kentmere 100 | 1.21 | 480 | 1755.100125 | |||||||||
39 | |||||||||||||
40 | |||||||||||||
41 | to get to filter factor | use that filter or | |||||||||||
42 | 4 stop | 3 stop + yellow | |||||||||||
43 | 10 stop | 8 stop +orange | |||||||||||
44 | 11 stop | 8 stop + red | |||||||||||
45 | 11 stop | 9 stop + orange | |||||||||||
46 | 12 | 10 stop + orange | |||||||||||
47 | 12 | 9 stop + red | Data from https://web.archive.org/web/20180428152710/https://www.ilfordphoto.com/wp/wp-content/uploads/2017/06/Reciprocity-Failure-Compensation.pdf | taken from www.lensbusters.com, (c)M Halberstadt |