Exposure bracketing

Exposure bracketing is a simple technique professional photographers use to ensure they properly expose their pictures, especially in challenging lighting situations.
When you expose for a scene, your camera's light meter will select an aperture shutter speed combination that it believes will give a properly exposed picture.
Exposure bracketing means that you take two more pictures: one slightly under-exposed, and the second one slightly over-exposed , again according to your camera's light meter.
The reason you do this is because the camera might have been 'deceived' by the light available and your main subject may be over- or under-exposed.Inflatable Obstacle By taking these three shots, you are making sure that if this were ever the case, then you would have properly compensated for it.
As an example, say you are taking a scene where there is an abundance of light around your main subject . In this case, using Weighted-Average metering, your camera might be 'deceived' by the abundance of light and expose for it by closing down the aperture and or using a faster shuter speed , with the result that the main subject might be under-exposed. By taking an extra shot at a slight over-exposure, you would in fact be over-exposing the surroundings, but properly exposing the main subject.
Another example would be the case where the surrounding might be too dark, and the camera exposes for the lack of light by either opening up the aperture and or using a slower shutter speed , then the main subject might be over-exposed. By taking an extra shot at a slight under-exposure, you would in fact be under-exposing the surroundings, but properly exposing the main subject.
Now, most digital cameras have auto exposure bracketing, meaning that if you select that option before taking your shot, the camera will automatically take three shots for you: one which it thinks it has perfectly exposed; a second one sightly under-exposed; and the third one slightly over-exposed.
When should you use exposure bracketing? Anytime you feel the scene is a challenging one as far as lighting is concerned, e.g. sunsets are usually better taken slightly under-exposed so use exposure bracketing there, or whenever you want to be sure you don't improperly expose a fabulous shot.
Remember, you are not using film anymore, so there are really no wasted shots.
Should you delete the extra shots right away? No, if storage permits, keep all three shots until you get home and upload them to your PC and into an image editing software, such as Photoshop. By using the layers functionality of Photoshop , you can load all three shots into different layers and then carefully erase the under-exposed or over-exposed part of one or more layers to end up with a final shot where both the main subject and the surroundings are properly exposed!
This Photoshop functionality allows you to shoot in very extreme lighting situations where there are many parts in different intensity of light and shadows such that you are losing details in the highlights and shadows.Inflatable Games In this case, you might need more than two extra shots to obtain details in the different parts. Without moving the camera , take as many shots as you need, exposing for the different parts you want details to be visible. Then you would load them all up into Photoshop, each into its own layer, and by erasing the under- and over-exposed parts in each layer , you can end up with an 'impossible' shot where every part of the cave is properly exposed.
Used judiciously, exposure bracketing is a simple technique that can ensure proper exposure of a difficult lighting situation. Make sure you get a camera with good manual Bracketing control