Jim Walker wrote in post #16686305
This is probably a dumb question but when it comes to technology I'm on the lower end of the scale. When you are using live view and looking at the LCD monitor
are you seeing exactly what the camera sensor is seeing No, not at all. The sensor sits behind a checkerboard of colored filters - red, green and blue filters - so that each pixel sees only light of one of those three primary colors. But the 11 million colors the human eye can see are formed by blending of all three primary colors. The camera's processing unit interpolates the other two "missing" primaries into each pixel by taking them from its neighbors. In a nutshell, a lot of processing has to be done to the feed from the sensor between it and the Live View lcd screen in order for you to see a full color image.
and under perfect conditions will the camera be able to capture exactly what you see on the LCD?
BUT, the processing that is done to the Live View image is exactly the same as is done in order to produce a jpg image and is done according to the parameters you have set in the camera - the Picture Style with its contrast, sharpness, saturation and hue settings, the White Balance, and all the rest of the directions you have given the camera on how you want your jpg to look. And in addition to this Live View adds another element. In a DSLR (or film SLR) camera, the lens aperture is always held wide open until the very last micro-second before the exposure, in order to have a brighter view in the viewfinder for viewing and focusing. And, of course, with a regular shot using the viewfinder the shutter is only open and the sensor exposed to the light for a very short time, usually a small fraction of a second. But in LV the shutter is opened and the sensor activated for many seconds. However, if you have Exposure Simulation enabled, the lcd display is darkened or brightened to simulate what the photo will look like. The simulation cannot be exact because it can't match your computer's monitor exactly, but it is very close if your monitor is not crazy bright or something.