Affinity Photo Tutorial: Remove Shadows and Keep Background Detail
Begin by adding a curves adjustment layer to brighten the entire image. Click and drag on the spline to raise the overall exposure. Open the Blend Ranges dialog via the gear icon to limit the adjustment’s impact. In the blend ranges graph, lower the highlights node to restore detail in over‑brightened areas, then lower the shadows node so the curves adjustment does not affect the shadow regions.
Masking and Refinement
Invert the adjustment layer’s mask with Command + I (Mac) or Control + I (Windows); the mask turns black, hiding the adjustment everywhere. Select the paintbrush tool, set hardness to 0 % and choose a low flow setting. Paint with 100 % white on the subject to reveal the brightening effect only where needed. If any adjustment spills onto the background, switch the brush color to black and paint over those areas to hide the effect again.
How Blend Ranges Work
Blend ranges are a graph‑based control that ties layer visibility to luminosity. By lowering the highlights node, the adjustment stops influencing the brightest tones, preserving detail. Lowering the shadows node similarly restricts the effect from reaching the darkest tones, keeping shadows intact.
Layer Masking Basics
A layer mask provides a non‑destructive way to hide or show parts of an adjustment layer. A black mask conceals the adjustment, while painting with white selectively reveals it. This approach lets you fine‑tune the effect without permanently altering the original image data.
Quick Reference
- Invert mask shortcut:
Command + I(Mac) /Control + I(Windows) - Brush hardness: 0 % for soft edges
- Brush color for revealing: 100 % white
- Brush color for hiding: Black
Takeaways
- A curves adjustment combined with blend ranges lets you brighten an image while protecting highlight and shadow detail.
- Inverting the adjustment layer’s mask creates a black mask that initially hides the effect across the whole photo.
- Painting with a 0% hardness brush set to 100% white reveals the curves adjustment only on the subject.
- Switching to black paint on the mask quickly hides any accidental adjustments applied to the background.
- Lowering nodes in the blend ranges graph restricts the adjustment’s influence on specific tonal ranges, preserving image quality.
Frequently Asked Questions
How do blend ranges prevent a curves adjustment from affecting highlights?
Blend ranges use a graph that maps adjustment visibility to luminosity; lowering the highlights node reduces the adjustment’s effect on the brightest tones, allowing highlights to retain their original detail while the rest of the image brightens.
What is the purpose of inverting a layer mask in this shadow removal workflow?
Inverting the layer mask turns it black, which hides the curves adjustment everywhere, giving you a clean slate to selectively paint white and reveal the brightening only on the desired parts of the image.
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How Blend Ranges Work
Blend ranges are a graph‑based control that ties layer visibility to luminosity. By lowering the highlights node, the adjustment stops influencing the brightest tones, preserving detail. Lowering the shadows node similarly restricts the effect from reaching the darkest tones, keeping shadows intact.
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