Clarity is a photo editing adjustment that increases or decreases local contrast in the midtones, making edges, textures and surface structure look more defined or, at negative values, softer and smoother. In image processing for photography, it sits between global tone controls such as the tone curve and fine-detail tools such as sharpening, because it works on medium-sized structures spread over tens of pixels rather than on single-pixel edges.
The control appears in most RAW converters and editors, typically as a slider from -100 to +100. Here the term refers only to this editing control, not to the general optical sense of a clear or sharp image.
How clarity works on local contrast
Clarity works by comparing each pixel with a blurred version of its surroundings and amplifying the difference. Conceptually it is a form of unsharp masking with a large radius and low amount: where sharpening uses a radius of about 0.5-2 pixels, clarity uses a much wider neighborhood, often tens of pixels and scaled to image size, so it boosts the contrast of shapes rather than of fine edges.
Modern implementations add two refinements. First, they apply a midtone mask, reducing the effect in deep shadows and bright highlights so that highlight clipping and blocked blacks are less likely. Second, they use edge-aware filtering instead of a simple Gaussian blur, which limits the halo artifacts that appear as bright or dark outlines along strong edges.
Negative clarity reverses the process. Subtracting local contrast smooths medium-scale texture, which can soften skin or create a dreamy, glowing look, while leaving overall brightness and the histogram’s global shape largely intact.
Clarity compared with neighboring adjustments
Clarity is easiest to understand when placed on a scale of detail sizes. Each neighboring control targets a different spatial frequency or tonal range, so they complement rather than replace one another.
| Control | Scale of detail affected | Tonal range | Typical use |
|---|---|---|---|
| Sharpening | Finest edges, about 0.5-2 pixels | All tones | Restoring crisp edges after demosaicing |
| Texture | Fine surface detail | Mainly midtones | Skin pores, fabric, foliage |
| Clarity | Medium structures and shapes | Midtones | Punch, depth and structure |
| Dehaze | Large regions with low contrast | Haze-affected tones, with color shifts | Fog, haze, flat atmosphere |
| Global contrast | Whole image | Entire tonal range | Overall tonal spread |
The key difference from global contrast is that clarity does not simply push darks down and lights up across the frame. A mid-gray wall next to a slightly darker door gains separation, while the wall’s overall brightness remains close to where it was. Compared with Dehaze, clarity does not attempt to model atmospheric scattering and usually causes fewer color shifts.
Typical clarity settings and their effects
Clarity is highly content-dependent, so numbers are guides rather than rules. Values also differ between applications because each uses its own scale and algorithm; the ranges below describe a typical slider from -100 to +100.
| Setting range | Visual effect | Suitable subjects | Main risk |
|---|---|---|---|
| -40 to -20 | Soft, glowing midtones | Romantic portraits, soft skin | Muddy, low-contrast look |
| -15 to -5 | Gentle smoothing | Beauty and skin retouching | Loss of natural texture |
| +5 to +20 | Subtle depth and definition | Most general photographs | Minimal |
| +20 to +40 | Strong structure | Architecture, landscapes, rough textures | Halos along skylines |
| Above +40 | Gritty, illustrative look | Stylized black and white, industrial scenes | Heavy halos and noise |
Because clarity amplifies medium-scale variation, it also amplifies noise and banding. At high ISO values, noise reduction should be applied first, and smooth gradients such as clear skies should be checked at 100% magnification.
Applying clarity globally and locally
Clarity can be applied to the whole frame or through local adjustments such as brushes, gradients and subject masks. A local approach is usually better, because the ideal amount differs between subjects in the same picture: rocks may benefit from +30 while a face in the same frame looks best near zero.
| Image area | Recommended direction | Reason |
|---|---|---|
| Skies and gradients | Zero or slightly negative | Avoids halos and banding |
| Skin in portraits | Zero to slightly negative | Preserves flattering tonal transitions |
| Eyes and hair | Slightly positive | Adds definition where viewers look |
| Rocks, wood, metal | Moderately positive | Emphasizes material structure |
| Out-of-focus backgrounds | Zero or negative | Keeps bokeh smooth |
In a typical RAW workflow, clarity belongs after white balance and exposure and after major tone curve work, but before output sharpening. During batch editing, a modest global clarity value can be synced across similar frames, with local refinements added only where needed.
Common mistakes with clarity
The most frequent problem is overuse, which produces an unnatural, crunchy look that ages poorly. Experienced editors judge clarity at both fit-to-screen and 100% views, because halos that are invisible in a thumbnail can be obvious in a print.
- Halos on high-contrast edges, such as a dark mountain against a bright sky; reduce the amount or mask the sky.
- Exaggerated skin texture, emphasizing wrinkles and blemishes; use negative or zero clarity on faces.
- Saturation shifts, since increasing local contrast can make colors look more intense; compensate with vibrance or saturation.
- Compression artifacts, when heavy clarity is applied to an 8-bit JPEG instead of a RAW file; edit the RAW whenever possible.
A useful discipline is to toggle the adjustment on and off after setting it. If the difference looks dramatic at normal viewing size, the value is usually too high for a natural result.
A non-technical view
Clarity is a slider that makes the shapes and textures in a photo stand out more, or less. Turning it up makes clouds look more dramatic, stone look rougher and wrinkles in clothing more visible. Turning it down makes everything look softer and gentler.
It is a little like adjusting how strongly light rakes across a surface. Raking light shows every bump; soft frontal light hides them. Clarity does a similar thing after the photo is taken, and a little goes a long way.
A concrete example
A landscape photographer edits a RAW image of weathered sandstone cliffs under a pale afternoon sky. The cliffs look flat because the light was soft, and the sky occupies the top third of the frame.
Instead of raising global clarity, the photographer paints a mask over the rock and sets clarity to +30 inside it, which brings out the layered grain of the stone. The sky receives clarity of -5 to keep its gradient smooth, and a small vibrance increase restores some warmth lost to the flat light.
Checked at 100%, the skyline shows no visible halo, and the final print shows cliffs with strong structure under a clean sky, an effect that a single global setting could not have achieved.