I took the exact same photo, with the exact same camera settings, with
every single one of my lights. I wanted to do a comparison to see the
differences between the power output of each light. I tested each
light on its highest power setting and then again on the lowest power
setting. The light is exactly 9 feet away, upper left with a white
shoot through umbrella. My camera is a 5D Mark II, with a 24-105mm
lens set to f/5.0, 1/160 sec, ISO 100. Camera is set to manual focus
and I'm triggering the camera with a remote. I took each photo first
with the highest power output the light could go, then the lowest
power output the light could go. Lights I tested are:
ARRI 300w Continuous Video Light.
300DI 300w eBay light knock off
75w ebay knock off, non-variable
Canon Speedlite 580ex II
Canon Speedlite 430ex II
Since I was taking the time to compare each light, I also did a complete write up on a common question I get from people. What kind of lights should I buy? Check out my blog post for my very detailed write-up of starting out in off camera lighting.
Entire write-up here: www.louish.com/2011/02/What_kind_of_studio_photography_li...