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Posts Tagged ‘32bit’

GIMP 2.10.0 released: Features 32-bit support, new UI and more

01 May

Open-source image editor GIMP has been updated to version 2.10.0, its first major update in six years. In this new version, GIMP has been “nearly” fully ported to the GEGL image processing engine, which brings support for up to 32-bit images, multi-threaded processing, and optional GPU-side processing for systems with stable OpenCL drivers.

According to the team, GIMP 2.10.0 uses GEGL for all of its tile management and to build an acyclic graph for each project. That satisfies the prerequisites for eventually adding non-destructive editing, a future feature slated for version 3.2.

The new image processing engine aside, GIMP 2.10 brings an updated UI with a new default dark theme; the symbolic icons are also now enabled by default. This gives users a total of four theme option: Dark, Light, Gray, and System. However, themes and icons have been separated so that users can choose them independently for better customization.

Additionally, there are now four icon sizes to improve their look on HiDPI displays. The software automatically detects the best size for the display; however, since it may not always be accurate, users can manually change the size if necessary.

Many new features and improvements, as well as expanded support, have arrived in 2.10.0—complete details of the changes are available in the full release notes. Notable among the changes is support for multiple new formats (including OpenEXR, WebP, RGBE, and HGT) on-canvas previews for filters ported to GEGL, improved warp tools, color management has been revamped as a core feature, and the digital painting experience has been enhanced.

GIMP 2.10.0 can be downloaded now for Windows, macOS, Linux, BSD, and Solaris.

Articles: Digital Photography Review (dpreview.com)

 
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Five Minutes to Realistic HDR using Lightroom and a 32-Bit Plugin

19 Dec

Easy Peazy HDR in Adobe Lightroom to make realistic HDR images!

HDR photography used to be time consuming, difficult to learn, and required expensive software. Recent new technology now allows anybody, even beginners, to make perfect HDR in less than 5 minutes – while eating a bowl of ice cream. It’s that easy!

Cuddeback_DSC5809_10_1132-bit-HDR-2

Using Adobe Lightroom for HDR

Just wait until you see how awesome this is!

The Perfect HDR Workflow takes place completely within Adobe Lightroom 4 or 5, a very robust, yet inexpensive, state of the art software. There is also an inexpensive plugin you will need. It’s made exclusively for Lightroom by the smart Photomatix people and is the secret sauce which makes this workflow possible and so elegant. It’s called “Merge to 32-bit HDR plugin” and is available for $ 29. They also have a trial version available so you can test it out first. These are the same people who make the world’s leading HDR tone mapping software, Photomatix Pro. So, take comfort, there’s no smoke & mirrors in this HDR workflow and you’ll be working with the best software available today. At the same time, your photography will now blow away 95% of the HDR images which are still being made using the old, harder to learn, HDR tone mapping process.

Notice, you don’t need to own Photoshop or endure the pain & suffering of learning how to use Photoshop to do this method! This, in itself, is huge and a welcome departure from the way HDR photography is typically done.

Advantages of 32-bit HDR Processing

The process I’m going to show you is technically called 32-bit HDR processing. The Perfect HDR Workflow is just my name for the particular workflow I designed with the beginning photographer in mind. My criteria was that total cost be under $ 150 US, which immediately rules out Photoshop in the workflow. Another requirement was that it be so easy that even a beginner can learn to make extraordinary HDR photos in minutes.

The advantages of the 32-bit process are:

  • It’s fast
  • It’s inexpensive
  • It yields realistic looking images
  • It’s very easy to learn

HDR doesn’t have to be complicated anymore. In fact, the Perfect HDR Workflow obliterates the complex technical barriers of making outstanding HDR which used to exist. Now, anybody with a digital camera and the desire can play a much bigger game when it comes to HDR photography, can do this!

Are you ready to see how it’s done?

Five Minutes to Perfect HDR

Here we go. Start with the three bracketed RAW images right out of the camera (you can download these for free if you want to follow along):

Easy realistic HDR in Lightroom

-2 shot at: ISO 200, F8, 1/1500

Easy realistic HDR in Lightroom

0 exposure shot at: ISO 200, F8, 1/350

Easy realistic HDR in Lightroom

+2 exposure shot at: ISO 200, F8, 1/90

In less than 5 minutes you’ll end up with an HDR photo looking like this:

Cuddeback_DSC5809_10_1132-bit-HDR-2

Start your stopwatch:

The first thing you want to do is create the 32-bit image. With the three RAW files selected in Lightroom, right click and in the dialog box which appears, select “Export>Merge to 32-bit HDR” as shown below.

Screen Shot 2013 11 23 at 10 17 57 AM

A new dialog box opens up where you choose your options for merging the RAW files (see image below). Always choose to “Align Images” and then one of the alignment options. If your three photos were taken handheld, select the alignment option “by matching features”. When you shoot on a tripod, you would chose the other option, “by correcting horizontal and vertical shifts”.

If there are moving objects in your scene such as: cars, people, clouds, trees, or anything else – select “Remove ghosts” and the software will usually do a great job of producing a non-blurry merged image, with no ghosts. For this landscape photo, nothing was moving so this option was not selected.

Noise reduction is usually necessary in HDR photography, however, I recommend not using the “Reduce noise” option which the plugin offers up. Instead, you are better off using the noise reduction built into Lightroom. So, leave that unchecked, as well.

Moving down to where you choose how the resulting 32-bit file is saved. I recommend simply combining the file names and adding a suffix like “32-bit HDR” so that, at a glance, you know that is the 32-bit file you want to work with in Lightroom.

The final dialog box selection you want to make is; “Stack with selected photo.” It’s so easy and elegant how this plugin makes your HDR workflow when this is selected. After the 32-bit file is created, the plugin automatically imports it right back into Lightroom and places it neatly next to the original RAW files. This keeps my OCD mind happy. Leave the final two options unselected then click the “Merge” button.

Here’s what the dialog box should look like

Screen Shot 2013 11 23 at 10 18 08 AM

In a few seconds, your newly created 32-bit file appears in Lightroom and looks something like this:

Screen Shot 2013 11 23 at 10 20 14 AM

Okay, well that’s not too pretty! That’s because this is a 32-bit file which your computer monitor can’t correctly display. But Lightroom 4 or 5 can process it, so let’s do that.

We’ll be working mostly in the Basic panel of the Develop module in Lightroom. The first step is to simply click the “Auto” button which gives you Lightroom’s best guess at the right setting for the image:

Screen Shot 2013 11 23 at 10 20 25 AM

It’s already looking much better. But let’s take it a step further!

Adding Your Artistic Touch

Now it’s time to add your personal artistic mark on your photo! At this point, you take over the processing manually to create an HDR image that is most pleasing to you. There are no right or wrong settings. However, my 5 minute process to Perfect HDR does follow some general guidelines so let me show you how this image evolved for me.

Working in the Basic panel, you first will reduce the “Highlights” (slide it left) and increase the “Shadows” (push it to the right) sliders until the image looks best to you. Then you might adjust the “Clarity” to a slight positive value, which adds local contrast between pixels. It makes the HDR photo “pop.” Please be careful not to push clarity too far right. My advice is to keep it below 30, for now anyway. Now let’s jump out of the Basic panel.

For just a couple of quick automatic adjustments, open up the “Lens Correction” panel. I recommend that you always check the box to “Remove chromatic aberration.” Also, you may want to straighten your horizon and/or vertical lines using the “Upright” adjustment tool. Here is what the “Lens correction” panel looks like when you make these simple adjustments:

Screen Shot 2013 11 23 at 10 24 24 AM

Now, go back to the Basic panel to finish. Set the white and black points as shown in the video below. The other sliders in the Basic panel can then be fine tuned to your taste and that’s it! Woooo Hooooo, done in less than 5 minutes! You’ve just made your first Perfect HDR photo! Send it to Mom and your friends and be ready to receive their adoration!

Watch The Full Perfect HDR Workflow Video

In the video below, I show the complete processing of this image including how to set the white and black points correctly. It’s easier to show some of the steps in a video, rather than try to describe it all in written form.

Try the Perfect HDR Workflow

If you want to give the Perfect HDR Workflow a try yourself right now, you can download my RAW files of this image for free. Get the free trial download of the merge to 32-bit plugin from the Photomatix website. The plugin you want is the last item on the page. Install the plugin with your copy of Lightroom 4 or 5. Then follow along to get the hang of the Perfect HDR Workflow and find out for yourself how easy this really is! If questions come up, I hang out on Google+ every day and you are welcome to circle & chat with me there or on my blog.

Become an HDR Wizard

Next time, in Easy Peazy HDR in Lightroom Part II, we’ll take this image further using the other panels of the Develop module in Lightroom. I think you’ll be amazed at the power and control you have using Lightroom to process your HDR photos. It’ll be like you’ve evolved into this unstoppable HDR Wizard!

The post Five Minutes to Realistic HDR using Lightroom and a 32-Bit Plugin by Keith Cuddeback appeared first on Digital Photography School.


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Working with 32-bit HDR Images in Adobe Photoshop Lightroom 4.1

27 Oct

The first official Update for Adobe Photoshop Lightroom 4 has been released! This free update fixes some irritating bugs and adds support for raw files for a host of new digital camera bodies but what excites me the most about Adobe Photoshop Lightroom 4.1 are the understated words “now able to work with 32-bit HDR files.” In geek-speak, this means that Photoshop Lightroom can now work with 32-bit Tif HDR images. In plain English, this means that we can now polish up our high-bit High Dynamic Range images using all of Lightroom’s powerful and efficient Develop Module tools. As a professional landscape photographer I have dabbled with exposure blending techniques for many years. Over the years, I have tried to master at least four different HDR image compositing programs but none of them ever felt fluid for me. I still need an additional program to merge my bracketed exposures together but now I can 99% of the work with tools that I already know and love. Thanks to this new feature in Lightroom 4.1 I can now go from Photoshop Lightroom 4.1 to Photoshop CS6’s to create my 32-bit High Dynamic Range Tif file and back to Lightroom for further image refinement in almost no time. I am so pleased with this new routine that I made this video tutorial just to demonstrate this techniques speed and simplicity. For more info on some of the other improvements in the Adobe Photoshop Lightroom update see thelightroomlab.com

 
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