xyrandomyx
Contributor
I originally posted my question here:
http://www.scubaboard.com/forums/sealife/443256-digital-pro-flash-shutter-speed.html
No replies after a few days and it's possible that it's not specific to Sealife, so I figured I'd post in the main underwater photography section. I'm a beginner photographer, so I apologise in advance if it's a daft question.
Basically, I started with these settings for a test shot (on land):
- external flash's brightness as low as it will go
- ISO: 100
- Aperture: F7.9
- Shutter: 1/60
I then increased the shutter speed to 1/125 and then to 1/250. The test shots (of the same subject, same distance, etc.) with the faster shutter speed were brighter/ more exposed.
How does this work? My understanding is that the shutter speed should not affect the flash. And the ambient light should decrease with faster shutter speeds. So, if there was any change at all, the shots with the faster shutter speed should be darker/ less exposed.
http://www.scubaboard.com/forums/sealife/443256-digital-pro-flash-shutter-speed.html
No replies after a few days and it's possible that it's not specific to Sealife, so I figured I'd post in the main underwater photography section. I'm a beginner photographer, so I apologise in advance if it's a daft question.
Basically, I started with these settings for a test shot (on land):
- external flash's brightness as low as it will go
- ISO: 100
- Aperture: F7.9
- Shutter: 1/60
I then increased the shutter speed to 1/125 and then to 1/250. The test shots (of the same subject, same distance, etc.) with the faster shutter speed were brighter/ more exposed.
How does this work? My understanding is that the shutter speed should not affect the flash. And the ambient light should decrease with faster shutter speeds. So, if there was any change at all, the shots with the faster shutter speed should be darker/ less exposed.