I live in a heavily industrialized part of China. The only time you could fairly describe the air as clean is the 45 minutes immediately after a heavy downpour. As such, photos taken of subjects anything further than, say, 5 meters away begin to look washed-out.
Apart from shooting exclusively in black and white or designing my own Mega Maid, what options are available for getting good color and sharpness when the air quality is, frankly, dangerous?
Answer
Really there is no substitute for clean air. If you know when the air is clean and you want the look it gives, shoot at those times:
- Early morning because the air warms up and lifts particles.
- On colder days.
- After a downpour as you said.
Obviously sometimes you have to shoot around a specific time. In those cases, you can do some adjustments that help:
- A polarizer. This works best at 60 to 120 degrees them the sun and not on overcast days.
- Avoid backlighting. This would light up particles and emphasize them.
- Sharp tone-curve. Most cameras can adjust the tone-curve. In the simplest models you have a single control for contrast, usually in 5 to 11 steps. The higher the contrast, the less dynamic-range is captured with the captured range spread out more which increased contrast. Some cameras have separate curves for shadows, highlights and mid-tones.
- Zoom with your feet. Prefer stepping closer over zooming in. There will be less air between up and the subject that way and thus less polution.
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