I’ve heard it argued that you shouldn’t rely on the live view preview on the back of your camera for setting white balance because it isn’t a calibrated display, and that’s true, it isn’t. This allows you to get creative by pre-visualizing how much of your scene is or is not in focus. When the depth-of-field preview feature is engaged you can watch in real time the effects that selecting different apertures has on the image’s depth-of-field on a nice bright display. Depth-of-field is controlled through the aperture setting along with the distance to the subject. Compose your image and adjust the aperture you want to use. Instead, turn on live view and engage a feature called exposure simulation. And even though many cameras have a depth-of-field preview button (usually found somewhere around the lens mount) use of this feature while looking through the viewfinder leaves you with a very dark image that makes it hard to see your subject let alone what is and what isn’t in focus. Many cameras offer the ability of zooming in on the live image 5x, 10x or more which really allows you to fine tune your focus.ĭepth-of-field, or the amount of the image that is in focus in front of what you’ve focussed on and behind what you’ve focussed on, can be very difficult for photographers to imagine. Manual focus isn’t optimal if you’re photographing action, but if you’re photographing a landscape or some sort of still life or macro shot, you can often improve on the camera’s attempt at autofocus by doing it yourself. Many photographers rely on the autofocus feature of their camera but it’s been demonstrated that manual focus will often result in more accurate focus than the camera’s autofocus system especially under difficult conditions. Purple Finch: Canon 5D Mark II, Canon 500mm F4L IS, 1.4x Extender II, 2.0x Extender II :: 1/800th of a second at F14, ISO 800 :: Live view used in place of mirror lockup function to reduce vibration during exposureĪn excellent use of the live view feature on your camera is to help you focus.
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