blickblocks - Reply Part 3
As a rule of thumb, I will always shoot at 100ISO (200 for Nikon), which allows for optimum quality, low noise and better dynamic range and would rarely use anything higher within a studio environment. If on location, I will assess and meter each scene individually according to available light and lighting style."
blickblocks - Reply Part 1
"The camera was set to 800ISO to compensate for the lack of ambient light, not flash light. The concept behind the tutorial is using a single flash to illuminate a subject and then 'dragging the shutter'; that is to say, using a much slower shutter speed to allow the ambient light/ background scenery to expose properly. The increased ISO is merely utilised to prevent the shutter speed from getting too slow, which would greatly increase to probability of motion blur.
"The camera was set to 800ISO to compensate for the lack of ambient light, not flash light. The concept behind the tutorial is using a single flash to illuminate a subject and then 'dragging the shutter'; that is to say, using a much slower shutter speed to allow the ambient light/ background scenery to expose properly. The increased ISO is merely utilised to prevent the shutter speed from getting too slow, which would greatly increase to probability of motion blur.
The higher the ISO and the slower the shutter, the more ambient light will fill the frame. Essentially, it is a trade-off between ISO and shutter speed and it depends entirely on the environment and lighting conditions within which you're shooting.