1 |
<- F1 is usually on seen on special purpose low light lenses. |
F16 daylight exposure rule |
1.4 |
<- F1.4 on some normal lenses | |
2 |
||
2.8 |
||
4 |
||
5.6 |
<- A lot of enlarging lenses set to the F5.6 - F16 range in use | |
8 |
||
11 |
||
16 |
1/ASA |
|
22 |
<- About the limit for most 35 mm lenses | 2/ASA |
32 |
<- F32 to F90 are common settings for view camera lenses | 4/ASA |
45 |
8/ASA |
|
64 |
<- Start of the "pinhole" range | 16/ASA |
90 |
32/ASA |
|
128 |
<- Limit of special purpose lenses. | 64/ASA |
180 |
<- Only pinholes from here on out | 128/ASA |
256 |
256/ASA |
|
360 |
512/ASA |
|
512 |
1024/ASA |
|
720 |
2048/ASA |
|
1024 |
4096/ASA |
|
1440 |
8192/ASA |
|
2048 |
16384/ASA |
Remember:
Going from a larger number to the next smaller number is a doubling of light
Going from a smaller number to the next larger number is a halving of light