Reading DX Codes
| ISO speed | 1st row DX contacts | |||||
|---|---|---|---|---|---|---|
| 25/15° | ||||||
| 32/16° | ||||||
| 40/17° | ||||||
| 50/18° | ||||||
| 64/19° | ||||||
| 80/20° | ||||||
| 100/21° | ||||||
| 125/22° | ||||||
| 160/23° | ||||||
| 200/24° | ||||||
| 250/25° | ||||||
| 320/26° | ||||||
| 400/27° | ||||||
| 500/28° | ||||||
| 640/29° | ||||||
| 800/30° | ||||||
| 1000/31° | ||||||
| 1250/32° | ||||||
| 1600/33° | ||||||
| 2000/34° | ||||||
| 2500/35° | ||||||
| 3200/36° | ||||||
| 4000/37° | ||||||
| 5000/38° | ||||||
| custom 1 | ||||||
| custom 2 | ||||||
| custom 3 | ||||||
| custom 4 | ||||||
| custom 5 | ||||||
| custom 6 | ||||||
| custom 7 | ||||||
| custom 8 | ||||||
| Exposures | 2nd row DX contacts | |||||
|---|---|---|---|---|---|---|
| other | ||||||
| 12 | ||||||
| 20 | ||||||
| 24 | ||||||
| 36 | ||||||
| 48 | ||||||
| 60 | ||||||
| 72 | ||||||
| Exposure tolerance (in f-stops) |
2nd row DX contacts | |||||
|---|---|---|---|---|---|---|
| ±½ | ||||||
| ±1 | ||||||
| +2 -1 | ||||||
| +3 -1 | ||||||
Read more about this topic: DX Encoding
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“Thou hast a voice, great Mountain, to repeal
Large codes of fraud and woe; not understood
By all, but which the wise, and great, and good
Interpret, or make felt, or deeply feel.”
—Percy Bysshe Shelley (1792–1822)