To begin this tutorial it is assumed that you have a basic understanding of what HDR images are and their importance as well as a basic understanding of how to use Tone-Mapping Operators in Artizen. If not, please read What is HDR tutorial and Using Tone-Mapping Operators

Display Tone-Mapping Operator

The Display global tone mapping operator is the new method Artizen is utilizing to display any hdr file by default when opened. Most other hdr applications typically clip all values great than 1.0, which may work with some images, it is also the reason why sometimes when a image is opened it is either completely black or completely white. Display on the other hand can display all the image of 95% of all hdr images with no problems. These result can be further enhanced to add additional contrast and give the image enhanced eye appeal. 

By default, the Display tone mapping operator has been designed to simply reduce the contrast of the image using a complex global operation. So to fine tune these result a user can load the Tone Mapping tool located under the HDR's menu option. The tone mapping process using this operator usually requires users to restore contrast to their preference, but with the comfort of knowing all the data in the image are visible. 

In the image below the Luminosity value was increased to 3.73, so that the data is stretched out to the brighter end of the image. The Saturation was increased to 0.35 just to give the image a little color. Rather than using the Contrast option the Highlights and Shadows values were used to adjust the overall contrast independently. The most interesting adjustment is the Midtones, this was applied to better centralize the data by setting the Midtones value to 0.06. As a result of shifting the data to the brighter side, the Shadows value is -1 and the Highlights option only needs to be 0.5. The process is rather simple since mainly part you start from the top most values and work your way down, but sometimes you may need to return start from the top again, as you may have adjusted the Midtones. Since Display is such a faster operator, the process of testing out different results can be achieved in seconds even with using the Slow & Detailed Preview Style as shown below.

Brightness/Luminosity: This option controls the overall brightness of the image and works similarly to a simple brightness color correction tool. Range (-10 to 10)

Saturation: Saturation boosts the brightness of each individual color. Range (0.0 to 1.0)

Contrast: Where Micro increases Micro Contrast, the Contrast option is a little more common to users as it can either reduce or increase Contrast across the entire image or what is commonly referred to as Global Contrast. Range (0.0 to 1.0)

Highlights: This option allows for fine tuning of only the Highlights in an image. This is usually one of the last options to be applied as it is one of the final adjustments to be made and can be used for fine tuning while watching the histogram. If you need to increase or reduce this value beyond +/-0.5 you should really consider bringing this value closer to zero and then increasing or decreasing the Luminosity value. Range (-1.0 to 1.0)

Shadows: This option like the Highlights is for fine tuning only the Shadows in an image. This option is also one of the last functions applied to the image and is therefore very easily used in conjunction with the Histogram. Range (-1.0 to 1.0)

Midtones: This option controls the entire image as a whole to help position the majority of image detail in the most visible way. This option should not even be required 99.9% of the time and is primarily suppose to deal with either very dark or bright images when and the Luminosity, Highlights and Shadows options are unable to achieve the desired effects. Range (-1.0 to 1.0)