![]() ![]() First of all, it admittedly feels a bit like cheating. Many photographers absolutely hate the entire idea of HDR for several reasons. The most significant of these is the fact that not everything you photograph will stay perfectly still as you take three to five different photos!Īddressing this problem is something that many applications like Photoshop and others are currently tackling and improving all the time, but there's still plenty of progress to be made. The benefits here are clear but there are limitations and hurdles as well. The end goal here is of course capturing a striking image that is much closer or even better than what you personally see. By utilizing multiple images taken at multiple exposures, you're able to create one final image containing all of the image detail from all of the photos. This means all you have to do is click a single button, after which several photos are taken automatically at different exposures.Īfter this, the images are transferred to a computer where they are compiled into a single end product. Odds are, your DSLR already has this feature built into it in an automated fashion. It's fairly typical for a photographer to use a three image system: one shot underexposed, one shot properly exposed and one shot overexposed. This process is repeated until the photographer is satisfied with the range captured. This is where bracketing comes in.īracketing involves setting your exposure down a given number of stops, taking a photo, then upping the exposure and snapping another shot of the same scene. By combining images taken at different exposures, you can meet or even surpass the range seen by the human eye. So why use a single image? This was the heart of the question posed by the pioneers behind HDR imaging. Digital photography is a constant game of juggling tradeoffs and it's literally impossible with the current consumer-grade technology to capture the full range of detail that you see before you with a single image. Similarly, if you adjust your exposure for a sunny day, most or all of the detail present in a shadow will be completely lost. If you set the exposure settings so that the details in a dark room are clearly shown, any points of light present in the image will be completely blown out. ![]() As you well know, it struggles with both shadows and highlights. Your camera, by contrast, isn't quite so gifted. ![]() In other words, your "range" of perception is quite broad. What this technical babble means on a practical level is that you possess the amazing ability to see well on a dark night, a bright sunny day and everything in between. The best of these sensors have dynamic ranges of about 13.5 stops of light, while human eyes are closer to 18-24 stops. Your eyes have a much higher dynamic range than most or all commercial electronic sensors. One of the most limiting of these factors is dynamic range, which, loosely defined, refers to the scope of lighting conditions in which we are able to perceive the world around us. There are several reasons for this: the fact that you have two eyes and one camera lens, different focusing mechanisms, etc. Have you ever wondered why you can't really shoot what you see? No matter what camera you have, from a cheap cell phone to a 5D, the images that are produced are notably different than what you're perceiving in the real world.
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