The drawbacks of bracketing
Bracketing does however have many constraints that enormously limit the potential of HDR image creation.
For example, you almost always have to work with a tripod. The problem is that they are cumbersome and often prohibited. In many cases such as in museums, cathedrals or other tourist spots you’ll set up your tripod only to be tapped on the shoulder by some security guard who tells you to move along. What if the location is crowded? You may not be able to set it up and it’d be a shame not to get your shot.
The only other solution would be to do your bracketing handheld. But this isn’t always the best approach. Regardless of whether you have a steady hand or not, the first thing you will have to deal with is motion blur. You can hold your hands as still as you like but tiny muscle movements in your hand will still cause it. Worse still, if you are against the elements such as strong winds etc you’ll probably find it difficult to get a good shot.
Another problem you are likely to encounter when you venture out into the world of HDR is ghosting. You’ve found your ideal scene – great. You’ve set up your camera – fantastic. Then you realize that your scene contains movement – damn. Unless you are shooting in optimal conditions with no one around, this will be a recurrent problem. The culprits are often travelling clouds, moving trees and people – yes some of us can’t spend all day taking photos. When you use bracketing for scenes containing movement you will ultimately get ghosting, and this is a nightmare for HDR enthusiasts as it makes an otherwise perfect image unusable.