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Anonymous File :-(, x)
>>235161
/p/ tip of the day:
Exposure equals the area under each curve.
The total area for the ambient light increases as you consider more time horizontally, due to a longer shutter opening.
The area (exposure) for the flash doesn't change so long as the exposure is at least 1/1,000 second to capture it all.
The exposure from ambient light increases as exposure time (flash sync speed) gets longer, but the contribution from the flash stays the same. One uses smaller apertures with longer exposures, which keeps the ambient exposure constant but requires more power from the flash to keep up.
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