When I shot with a 5d Mk 2, shooting with the ISO in multiples of 160 was key. Especially when filming indoor interviews. When I was outside (during the day), I didn’t find it made a lot of difference.
The reason being is that when you shoot in 160 steps, you get the cleanest black you’re going to get without a lot of noise. But when I was outside during the day, blacks weren’t as important as when I was shooting an indoor interview, so I never HAD to follow the 160 rule because I didn’t notice a lot of noise when it was bright out.
That said, I still stepped up the ISO by 160 and just used a VariND filter as I wanted to be sure.
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Justin
http://www.carlsonmedia.ca
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