![]() ![]() Then a +3EV overexposure would be made to pull the blacks up nearly to middle grey getting more detail into the shadows area that under normal conditions would be black. The premise was that if the evaluative meter gave you 18% grey, then a -2 EV underexposure would put whatever the base reading considered to be white, into middle grey, pulling more data out of the highlight areas and keeping them from blowing out. Using predominantly Photoshop layers, each image would be imported into its own layer, then layer masks would be created where different parts of the different images would be combined to create a single final image with much wider dynamic range than any one of the shots. The premise was that the wider range of exposures made, the more content would be there for the next step. So what digital photographers would do would be to make multiple exposures of the same subject, using the evaluative metering system and then consciously choosing to under and over expose the subsequent shots. This is very much less of a problem today, than it used to be as we see sensors with 11 and even 12 stops of native dynamic range. ![]() When digital cameras, particularly digital SLRs came out, the sensors were limited to between 5 and 6 stops of dynamic range, after which content either fell into unrecoverable blacks or blown out whites. The Zone System measured from Zone 0 to Zone 10, effectively 11 stops of exposure, although many implementations exist and range does vary. The principal was to use multiple meter readings to determine the dynamic range of an image to be made, to maximize the exposure and then to work in processing and printing to get the widest possible dynamic range. Before we get there, let's explore what the original point of all this was.Ī long time ago, Ansel Adams defined the Zone System. ![]() In this article I look at the benefits that HDR can bring and explore the output from Photomatix Pro 5, Nik HDR Efex Pro 2, Photoshop Merge to 32 Bit HDR and HDRsoft's 32 Bit Merge alternatives.HDR images don't have to look overcooked. HDR or High Dynamic Range has taken a beating over the last couple of years, and sometimes rightly so, not because the concept is bad, but because too often the execution is so over the top and screams fakerooni. ![]()
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