Batch processing a series of images with DxO FilmPack 4
In collaboration with Christophe Gressin
In this tutorial, we will show you how to use DxO FilmPack for processing a series of images. You will learn how to reproduce a custom preset and to quickly apply it to a batch of images as part of your workflow.
To follow this tutorial, you will need:
- DxO FilmPack 4 Expert Edition.
- Several photos in either JPEG or TIFF format.
1- Batch processing images
The main reason for wanting to process a series of images in one batch is that it saves time: when you know how to define the preset you want to apply to one or several series of images, the possibly of applying this rendering to dozens of photos in just a few clicks represents an enormous gain in productivity!
Thus many photographers define one or several “generic” renderings that they will apply by default to their images according to the nature of the photos (e.g., landscape, urban, nature, etc.), or they will start by processing one photo in the series first before applying the same settings to all the photos.
Other reasons can also lead to requiring batch processing. For example, wedding photographers often use several cameras (different models or even different brands) when shooting the same scene, but different cameras render photos differently even under the same shooting conditions. In this instance and in other situations requiring the use of more than one camera, photographers frequently find it desirable to produce a finished album of uniform-looking shots, regardless of the shooting conditions and the equipment they use.
With all this in mind, we will explain how to use DxO FilmPack 4, and how to integrate it into a RAW workflow regardless of the software you use for demosaicing.
The batch processing feature is available only in the Expert edition.
2- Defining a custom preset
First, let’s define some custom parameters for landscape photos.
2.1 – Choose your preset
From among the hundred or so presets available in DxO FilmPack, choose the one that comes closest to the rendering that you want to achieve. Here we will choose the Kodak Kodachrome™ 25 preset for its contrasted and saturated style (accessible in the Color slide film list).
2.2 – Adjust the exposure
Given that the blacks are already dark enough and that the dominant colors are quite dense, we will brighten the image a little by setting the Exposure slider to +1:
Using the Settings correction tools when batch processing may give different results than expected if the photos were taken under very different lighting conditions.
2.3 – Correct the colors
We will use the Hue-Saturation-Lightness (HSL) tool to adjust the corresponding color channels so as to soften the tones on the walls of the castle and in the sky.
First adjust the color of the wall by selecting the Reds channel from the drop-down menu, then set the Lightness to –20.
Then correct the color of the sky by selecting the Blues channel, for which you will set the Luminance slider to –40
2.4 – Customize your rendering
Next use the available tools in the Effects tab to add a personal touch. With our example, start by adding some Creative vignetting by setting its intensity slider to –30.
As with the Settings tool, choose “neutral” effects if you intend to process your images by batch. If for example you shift the center of your creative vignetting, its new position may not work for other images in the batch, whereas it will generally work if it remains in the middle of the image.
Now add a frame. Here we will choose White line.
2.5 – Create a custom preset
After all your settings are in place, save them as a Custom preset so you can use them later. To do so, right-click on the image and select Create custom preset from current settings.
You can also access this function by clicking on the button in the command bar.
Give your preset a name (here Landscapes), and validate it by clicking on Save.
You can subsequently find the saved preset in the presets panel under the Custom presets tab.
3- Reproducing a custom preset
Depending on your needs, you can now apply your settings to an entire set of photos.
3.1 – Choose a new photo
Close your photo, saving your results, and open another one.
3.2 – Apply your custom preset
To apply a custom preset, go into the list of your custom presets and click on the one you want to user (in this instance, the one called Landscapes); the settings will be automatically applied to the open image.
3.3 – Apply the custom preset to a series of photos
When you are sure that your settings will work well with your entire series of photos, use the batch processing feature to apply your settings in just a few clicks, regardless of the number of images. To do so, go to the File and choose Batch processing…(keyboard shortcut: CTRL + B for Windows or Cmd + B for OS X).
A dialog window will open
Click the Add button to open the file explorer and select the photos you want to process using the custom preset.
Repeat the operation as many times as necessary when you want to process images whose files are in different directories. That said, we recommend that you copy all of the images in your series into the same folder in advance so that you only have to open one folder.
Choose your preset from the corresponding drop-down menu.
In the same way, choose the output format (JPEG or TIFF) you usually do when working in DxO FilmPack, along with the corresponding options.
You can also choose the directory in which the files you create will be saved. Finally, choose the suffix that will be applied when you name your new files.
Once you have set your options, start the processing by clicking on the Process button; DxO FilmPack will display a progress bar.
As soon as processing is completed, you will see a message indicating that the batch has been successfully processed.
Your series of images has now been processed, and the custom preset has been applied to the entire batch for very quick, high-quality, and uniform results.
4- Going further: Integrating DxO FilmPack 4 with your workflow
DxO Optics Pro 9 also allows for batch processing. If both applications are activated, all of the tool palettes specific to FilmPack settings will be available in DxO Optics Pro, which will allow you to define your custom renderings and to directly apply them to your RAW images. For more information, see our tutorial about creating custom presets in DxO Optics Pro.
You can also take advantage of DxO FilmPack’s presets regardless of which RAW converter you normally use. In this case, simply process your RAW images and then save your images as JPEG or TIFF files before batch processing them in DxO FilmPack as described in this tutorial.
Photos credits: Christophe Gressin