How to make the most of the High Dynamic Range Tool

Tip713 image1 fullWith the High Dynamic Range Tool (HDR Tool) in Capture One 7 you can optimize images with a high dynamic range and extract details and regain otherwise lost colors in both shadows and highlights.

The tool has individual sliders for controlling recovery of highlights and of shadow details.

If values over 70-80 are needed in one of the sliders, it can be a very good idea to use the Exposure Tool to bring in the exposure as a first step. As a second step, use the HDR Tool to extract the desired details and colors in both highlights and shadows – now with lower slider values. When lower and more similar values of the shadow and highlight slider are used, you will typically achieve a more realistic and pleasing image.

Tip713 image2 fullThe image to the left is directly out of the camera. The high dynamic range of the scene makes it difficult to see details and color in the shadows, but also the sky has lost some color. The image to the right has been optimized in Capture One 7, primarily with a combination of the Exposure Tool and the High Dynamic Range Tool. Finally the Keystone Tool has been used to correct the perspective.

To illustrate the effect of using the slider in the Exposure Tool followed by the High Dynamic Range Tool, I have shot a series of test images with different exposures.

Tip713 image4c fullThe first image is exposed with clipping of only the extreme highlights. This exposure gives a perfect definition in the bright elements in the scene, but all the shadow details are barely visible. For the last exposure, we have a reasonable amount of details in the shadows, but the highlights are overexposed and you can hardly see the large red poster on the building in the background.

Let’s start with the first image, which is exposed with good highlight details, but with very dark shadows. To bring back the shadow details, I could use the shadow slider in the High Dynamic Range Tool.

Tip713-image5-fullUsing only the shadow slider in the High Dynamic Range Tool, I need a value of 90 to open up the shadows. However by doing so, I won’t get a natural looking result.

To achieve a more natural looking result, I will use the exposure slider to open up the shadows first. This will lead to overexposure in the highlights, but this can easily be fixed with the highlight slider in the High Dynamic Range Tool.

Tip713-image6-fullThis is the same image as before, but now I am using the Exposure Tool to generally open up the image and the High Dynamic Range Tool to bring in the highlights and the shadow details. Note that I have the same value for both the highlight and the shadow slider. The image now looks much more natural.

Having this idea in mind, I will correct the last of the 4 images, which was the one exposed with EV +2.

Tip713-image7-fullInstead of only using the highlight slider in the High Dynamic Range Tool, I start out by using some negative exposure compensation in the Exposure Tool and then use the High Dynamic Range Tool. Once again I use similar values for the shadow and the highlight slider, and I achieve a natural looking image with a good balance of shadow and highlight details.

Tip713 image8b fullBy using this technique it’s possible to adjust all 4 images to give the same natural looking result. An amazing result given we have a 2 f-stop exposure variation from the left to the right image.

All the best,

Niels

Creating High Dynamic Range images

Tip712 Img1 1200Capture One Pro 7 has an improved High Dynamic Range (HDR) Tool. This tool is designed to deal with images where the dynamic range of the scene is wider than what normally will be rendered by the default tone response curve in Capture One Pro 7.

The High Dynamic Range Tool in Capture One Pro 7 gives you the possibility of bringing back details otherwise hidden in both highlights and shadows at the same time.

The improved HDR tool use sophisticated algorithms allowing you to control details in the highlights and the shadows independently of each other. For instance when working with the highlight slider you will not affect tonality in the shadows.

Tip712 Img2 fullThe left image is straight out of the camera. The image to the right has been improved primarily by using the
High Dynamic Range Tool in Capture One Pro 7. The tool has brought back details in the shadow as well as in the blown out parts of the sky.

To see what has actually been captured by the camera sensor in both the shadow and the highlights, I start by dragging the exposure slider.

tip712 img3 fullDragging the exposure slider up, I see that the sensor has captured lots of details in the dark foreground.

Tip712 img4 fullDragging the slider to negative exposure values, I see that even though the highlights looked as if they were burned out, the software is still able to recreate all the highlight details.

Having realized that the RAW image file actually contains valid (but hidden) information in both the shadows and the highlights, I now know that I will be able to improve the image the way I would like to.

Tip712 img5 fullIn the High Dynamic Range Tool I use the sliders to bring back the details of the dark foreground and in the bright sky. This image needs quite high values to get the desired level of highlight details, but the image also becomes a bit flat and lacks some kind of contrast after adjusting both Highlight and Shadow.

Tip712 img6 fullTo compensate for the lack of contrast, I use the Clarity Tool and the method “Punch” with Clarity 35 and Structure 15. These settings bring back some local contrast to the image and makes the image look much more natural and much closer to how I saw the scene with my own eyes.

Tip712 img7 fullFinally, I add a bit of Contrast and some extra Saturation in the Exposure Tool.

All the best,

Niels

High-contrast scenes at Ormiston Gorge, Central Australia

Hero_630_CROrmiston Gorge isn’t as big as the Grand Canyon, nor as deep or as wide, but it does have a spiritual presence. The age of the rocks, the ruggedness of the terrain, the light spinifex grasses and the white trunked gum trees create an enchanting landscape. Around two hours west of Alice Springs, it’s not far from Glen Helen Gorge where we were staying for the night and we planned to be there for the morning shoot.

We awoke at a reasonable time, 5.00 a.m. which was an hour or so before sunrise. A short trip in our vehicle and we found ourselves at the mouth of the Gorge. From the car park, you can take a level stroll around a dry river bed and into the gorge itself. There are several deep pools locked by towering rock walls, but to walk further requires a more agile state of mind and some rock hopping. We went this way on a PODAS a couple of years ago with Kevin Raber, Ken Duncan and Jeff Schewe.

Tree_630_CR The other option is to climb up a path. There’s a great gum tree up the top of the rise and it can be photographed from a point half way up, or up at the tree itself. I went all the way to the top and spent a magical hour watching the light intensify, the sun rise and the light snake its way from the top of the gum tree down to the bottom of its trunk.

Just being up and out at this time of the day is wonderful enough, taking a few great landscape shots even better!

Across from the tree, a finger of land pushes into the Gorge, requiring it to dog-leg around. As the sun rises, its rays skim across the top of this land, lighting up the trees and grasses, but I’m also seeing the strong reds come through in the rock faces below and behind. To my eye, it’s a strong composition, but it requires a telephoto to make it happen. Although many people think landscape photography is best approached with a wide-angle or a panorama camera, I find a lot of my shots work better by simplifying the scene with a telephoto.

The accompanying image is photographed with a 110mm Schneider Kreuznach, so it’s only a mid-telephoto, but long enough to crop the scene and eliminate the sky behind. By removing the sky, the image has the feeling that the rock face behind goes upwards forever, plus it reduces the number of compositional elements to deal with.

And while I might be teaching most readers to suck eggs, when shooting into the light, it’s important to not only use a lens hood, but perhaps shade the lens hood with a cutter or your hand as well. It’s essential to keep any unwanted flare under control.

Photo1_630_CR
Post Production

In Capture One, the processing was relatively simple, especially with the new High Dynamic Range algorithms running around inside.

However, to start I struggled with the colour balance a little. The natural or ‘correct’ colour was a little yellow to my eye and I wanted there to be more contrast between the colour in the sunlight and the colour in the shade. The camera had set the Kelvin at around daylight, which was very sensible, but I found by dragging the Kelvin slider down to 4600-4700 that I was able to produce a little coolness in the shadows, and this contrasted well with the warmth of the sunlight on the yellow grasses.

Screenshot1_630The exposure was pretty right, so next step was to increase the contrast and give the image some guts. This worked well, except in two places. The highlights on the grasses lost detail and appeared too light, while the shadow areas in the bottom left became a little muddy. No trouble, the High Dynamic Range tool is the answer.

Using the Shadow slider, I lightened up the shadows without going overboard. I still want this to be a dark part of the image, but I want you to be able to see what’s in it. Similarly, the Highlight slider allowed me to return detail and colour in the grasses up the top.

I find when using the High Dynamic Range tool that I have to return to the Contrast slider in the Exposure tool and, usually, add in a little more contrast. Not always, of course, but if you’ve been using the High Dynamic Range tool and struggling a bit, try using it in combination with the Contrast slider and between the three controls, Capture One Pro 7 is remarkably powerful.

Photo2_630_CRSitting back and looking at the image, I then increased the colour saturation (I like colour), cropped the top of the sky out of the image completely, added in a vignette to darken the edges and, finally, added a Local Adjustment to darken down the rock wall in the distance. This helps to emphasise the separation between it and the finger of land in sunlight.

Cheers,

Peter

Peter Eastway is a professional photographer and photography magazine editor based in Sydney, Australia. If you would like to accompany Peter and Tony Hewitt on a seven day Central Australia ‘Adventures in Oz’ workshop in August 2013, click here for more information.

And if you’d like to see a short movie explaining in more detail how Peter processed this file in Capture One, click here.

To see more of Peter’s photography, visit www.petereastway.com. Peter also offers an online Landscape Photography MasterClass. It contains articles and videos, outlining his camera and post-production techniques. Details can be found at www.betterphotography.com.

Amazing Highlight Recovery with Capture One Pro 7

In Capture One Pro 7, we have introduced a new processing engine improving the image quality on a number of different parameters such as the way the software now deals with extreme highlights and data close to being clipped.

These aspects have been dramatically improved and now have:

  • Larger range for how much overexposure that can be recovered
  • Color precision is greatly improved in recovered areas
  • Much smoother transition to clipped data
  • More detail in the highlight areas

JPG                                                                Capture One Pro 6                                Capture One Pro 7

The image above shows three different versions of the same shot. The left side image is the JPG that was generated in the camera. The center image is the result of recovering highlights in the raw file using Capture One Pro 6. The image to the right is the same raw file but now processed in Capture One Pro 7.

Using Capture One Pro 7 it was possible to recover almost all the detail and color tones in the overexposed areas of the swan by using only the Highlight slider in the High Dynamic Range tool.

Visit the blog to see more examples of the improved ability to recover highlights

Below is another example of the new and improved processing engine’s ability to recover color and detail by using Capture One Pro 7 on a raw landscape image.

JPG                                                                Capture One Pro 6                                 Capture One Pro 7

With the JPG file, it is not possible to recover any color and detail in the sky. By processing the raw file in Capture One Pro 6, you can recover most of the sky, but the color information is wrong and the missing color information will show with hard transitions. With Capture One Pro 7 however, it is possible to recover both the detail in the clouds and the color of the blue sky in a natural and pleasing way.

For both raw files, the High Dynamic Range tool was used to recover the highlight detail. Some global saturation was also added.

When shooting landscape images using natural light, it can sometimes be quite challenging to control the highlights as you cannot control the light source. And even when you can control the light, you may still need the ability to recover highlights.

Many of us have tried shooting a portrait in the studio only to misadjust the flash just as the expression was just perfect, like in the example below.

Raw file – way overexposed                                                     Capture One Pro 6 recovery

This image is totally overexposed due to a human error with the flash and even though Capture One Pro 6 can recover a majority of the image, it will still require many hours of retouching to save it.

However, with Capture One Pro 7 it is possible to recover all the highlight detail.  The image above has only been adjusted by using the Exposure tool globally as well as the Exposure tool in a Local Adjustments mask in Capture One Pro 7.

All the best,

Niels

Adjustments by numbers

In Capture One Pro 6, you can use multiple Color Readout pins to guide your adjustments of the colors in an image.

This is very helpful if you need to adjust an image to meet a set of specific values in, for example, the shaded and highlighted areas. Doing so can help you achieve better results when printing.

The positions of the Color Readout pins are not tied to an individual image but are applied to the main viewing area of Capture One (“the Application Viewer”).   

When lighting the scene of a tethered shoot, multiple Color Readout pins will give you a quick overview of how well you have lit the different objects. This makes it fast for you to create the perfect lighting for your final shots.

  

Using the Color Readout pins

The image has been adjusted by using the Exposure Tool and the Levels Tool. I used 3 Color Readout pins to help me control the values in the selected areas.

1)     Highlights: I placed a Color Readout pin in the highlighted reflection of the dress.  In order to keep the details in the highlighted area, I made sure that I got values from 250 to 254 for the color giving the highest value.

2)     Shadows: I placed a Color Readout pin in the shaded part of the girl’s hair. In order to show the details in the shaded area, I made sure that I got values from 20 to 30 for the color giving the highest value.

3)     Skin tone: I placed a Color Readout pin in the highlighted reflection on the girl’s skins. I made sure that I got values from 215 to 230 for the color giving the highest value in order to create a natural reproduction of her skin.

Using the Color Readout values when adjusting images is a supplement to just relying on what you see on the monitor. It will help you produce more consistent images and make fewer mistakes.

The Color Readout values in Capture One Pro 6 depend on how the Proof Profile is set up. By default, it is set to use the ICC profile from the selected Output recipe.  In the example above, I worked in sRGB as I was preparing the image for online use.  An important thing to note when setting up the Proof Profile is that it makes a difference whether you use sRGB or Adobe 1998, as the values change from one to the other.

You can add or remove a Color Readout pin by using the respective Cursor Tool. Click on the Picker Cursor Tool to see the different picker choices.

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