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On the DOF, I've shot a lot of hummer's, stopping up from an F4 also requires reducing shutter speed to less than optimal range for hummingbirds. The other thing that to me makes a subject with color stand out better is quality bokeh, which you won't get as much if the background is in focus in my experience.
Quote from: Dmanmastertracker on January 03, 2012, 05:28:53 PM On the DOF, I've shot a lot of hummer's, stopping up from an F4 also requires reducing shutter speed to less than optimal range for hummingbirds. The other thing that to me makes a subject with color stand out better is quality bokeh, which you won't get as much if the background is in focus in my experience. Just bump your ISO up once, you will maintain your speed even with the one stop loss from f4 to 5.6