Time & Temperatire Conversion Scale
l film 'n develop |
How To Use This Table
| 1. |
Find out the correct time your film should be processed for
when the temperature of the developer is 20°C |
| 2. |
Find out the temperature of the developer in the deep tank |
| 3. |
If the developer is not 20°C, then refer to the conversion
table. If your film should be in the developer for 8 minutes
at 20°C, but the temperature of the developer is 23°C,
then the correct development time at 23°C which should
be 5 3/4 minutes. |
| 17°C |
18°C |
19°C |
20°C |
21°C |
22°C |
23°C |
24°C |
| 2 3/4 |
2 1/2 |
2 1/4 |
2 |
1 3/4 |
1 1/2 |
1 1/4 |
1 1/4 |
| 4 1/4 |
3 3/4 |
3 1/4 |
3 |
2 1/2 |
2 1/4 |
2 |
2 |
| 5 1/2 |
5 |
4 1/2 |
4 |
3 1/2 |
3 |
2 3/4 |
2 3/4 |
| 7 |
6 1/4 |
5 1/2 |
5 |
4 1/2 |
4 |
3 3/4 |
3 1/2 |
| 8 1/2 |
7 1/2 |
6 3/4 |
6 |
5 1/2 |
5 |
4 1/4 |
4 |
| 9 |
8 3/4 |
8 |
7 |
6 1/4 |
5 1/2 |
5 |
4 3/4 |
| 11 1/4 |
10 |
9 |
8 |
7 |
6 1/2 |
5 3/4 |
5 1/2 |
| 12 1/2 |
11 1/4 |
10 |
9 |
8 |
7 1/4 |
6 1/2 |
6 |
| 14 |
12 1/2 |
11 1/4 |
10 |
9 |
8 |
7 |
6 3/4 |
| 15 1/2 |
13 3/4 |
12 1/4 |
11 |
9 3/4 |
9 |
8 |
7 1/2 |
| 17 |
15 |
13 1/2 |
12 |
10 1/2 |
9 1/2 |
8 1/2 |
8 1/4 |
| 18 1/4 |
16 1/4 |
14 1/2 |
13 |
11 1/2 |
10 1/2 |
9 1/4 |
8 3/4 |
| 19 1/2 |
17 1/2 |
15 3/4 |
14 |
12 1/2 |
11 1/4 |
10 |
9 1/2 |
| 22 1/2 |
20 |
18 |
16 |
14 1/4 |
13 |
11 1/4 |
11 |
| 25 1/4 |
22 1/2 |
20 |
18 |
16 |
14 1/2 |
12 3/4 |
12 1/2 |
| 28 |
25 |
22 1/2 |
20 |
18 |
16 |
14 1/2 |
13 1/2 |
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