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<blockquote data-quote="480sparky" data-source="post: 283058" data-attributes="member: 15805">Not always.The problem with Auto Exposure is the camera doesn't know what your intentions are.&nbsp; It only knows, &quot;Get a correct exposure.&quot;&nbsp; Not &quot;Get THE correct exposure.&quot;Let's use the Sunny 16 Rule as an example.&nbsp; But first, we'll need to set some parameters.&nbsp; Let's limit ourselves to only full stops, aperture between 4 and 22, and ISO 100-400.The Sunny 16 Rule, at ISO 100, says a correct exposure would be f/16 and a shutter speed of 1/100.&nbsp; At ISO 100, the other correct exposures would be:1/1600, f/4.1/800, f/5.61/400, f/81/200, f/111/50, f/22At ISO 200, we have:1/3200, f/41/1600, f/5.61/800, f/81/400, f/111/200, f/161/100, f/22And at ISO 800:1/6400, f/41/3200, f/5.61/1600, f/81/800, f/111/400, f/161/200, f/22 So with the above limitations, there's a choice of 21 'correct exposures' the camera can make.And if you bring in more available apertures and ISOs, and break it down further with half- or third stops, the possibilities increase exponentially.&nbsp; A single image could have hundreds of 'correct exposure' choices.&nbsp; Since the camera cannot be programmed to read your mind, it calls upon it limited 'knowledge' and makes many assumptions.The only way to break out of this rut is to learn to take control of your camera.</blockquote>

[QUOTE="480sparky, post: 283058, member: 15805"] Not always. The problem with Auto Exposure is the camera doesn't know what your intentions are. It only knows, "Get a correct exposure." Not "Get THE correct exposure." Let's use the Sunny 16 Rule as an example. But first, we'll need to set some parameters. Let's limit ourselves to only full stops, aperture between 4 and 22, and ISO 100-400. The Sunny 16 Rule, at ISO 100, says a correct exposure would be f/16 and a shutter speed of 1/100. At ISO 100, the other correct exposures would be: 1/1600, f/4. 1/800, f/5.6 1/400, f/8 1/200, f/11 1/50, f/22 At ISO 200, we have: 1/3200, f/4 1/1600, f/5.6 1/800, f/8 1/400, f/11 1/200, f/16 1/100, f/22 And at ISO 800: 1/6400, f/4 1/3200, f/5.6 1/1600, f/8 1/800, f/11 1/400, f/16 1/200, f/22 So with the above limitations, there's a choice of 21 'correct exposures' the camera can make. And if you bring in more available apertures and ISOs, and break it down further with half- or third stops, the possibilities increase exponentially. A single image could have hundreds of 'correct exposure' choices. Since the camera cannot be programmed to read your mind, it calls upon it limited 'knowledge' and makes many assumptions. The only way to break out of this rut is to learn to take control of your camera. [/QUOTE]

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