Diffusion, bloom and halation arrive in the Effects panel, applied globally or through masks – but not in Lightroom.
Adobe recently released the newest version of its Raw processing software, Adobe Camera Raw 18.6. Its headline feature is a native Glow effect tool that gives users three analog-inspired looks – diffusion, bloom and halation – directly within ACR. Other features include a new Metadata Info Panel that shows image data directly in the editing workspace, and photographers and designers who work with composites gain a new Trim tool that makes everything outside a crop transparent, rather than leaving it as hidden pixels. The update also adds support for additional camera and lens profiles.
What Glow does
The new Glow tool lives in Camera Raw’s Effects panel alongside the existing Vignette and Grain sliders. Adobe’s documentation describes three selectable styles. Diffusion applies a hazy, film-like softening effect that spreads across the frame, similar to what a Black Mist or Pro Mist filter attached to your lens would achieve. Bloom produces a softer, more even glow confined to the highlights, which could be useful for misty scenes and waterfalls. Halation adds a colored halo effect around bright edges and light sources, similar to the warm, or red-orange fringing that appears on film when light reflects off the film base back through the emulsion.
Glow works inside Camera Raw’s masking system, so the effect can be dialed up or down on a subject, a luminance range or a selected area, though the Style, Range, Spread and Warmth sub-settings are shared globally – masks control how much something glows, not the kind of glow.
Greg Benz, a digital photo educator (and a member of the DPReview community), posted a helpful video on his YouTube channel illustrating the capabilities of ACR’s new Glow tool, including examples of using masks to achieve localized results. If you’re interested in learning more about it, we highly recommend giving it a watch.
One thing worth calling out: Glow is currently an ACR-only feature and isn’t available in Lightroom. Though given the close relationship between the two applications, we wouldn’t be surprised to see it show up in Lightroom at some point.
Other new features
ACR’s new Metadata Info Panel provides an easy way to see read-only metadata for any photo you’re viewing in Camera Raw. Clicking the small “i” on the right-hand pane of ACR will display the camera model, lens, image dimensions, file size, capture date, copyright information, file name and caption (if present). It will also display any content credentials information embedded in the photo.
The new Trim tool is located in the Crop & Expand panel. It can be used to trim an image to the exact area you’ve selected, making everything outside the crop transparent rather than retaining it as hidden pixels. This is different than a normal crop in ACR, which is non-destructive, keeping the pixels outside the cropped area but not displaying them. This removes a step for photographers or designers creating composites or those who need transparent backgrounds.
Trim can also be used in conjunction with Generative Expand: trim to the area you want, then expand the canvas using generative content from Adobe Firefly.
According to Adobe, ACR 18.6 also supports additional cameras and lenses, including the Tamron 12-20mm F2.8 and Reeflex anamorphic and fisheye lenses for iPhone. As of this writing, Adobe hasn’t updated its list of supported camera models since earlier in August; you can check the company’s camera support page for the latest information.
ACR 18.6 is available now through the Creative Cloud desktop app. You can find the full release notes on Adobe’s website with additional details in a post to the Adobe Community site.
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