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Why there is a vignette on the RAW files?

PreviousMissing Fujifilm Camera ProfilesNextBacking Up and Restoring Your Edits

Last updated 14 days ago

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If you notice dark corners (vignetting) in your RAW images when opening them in Luminar Neo, you’re likely seeing lens distortion.

This happens because RAW files show the image as it was captured by your camera sensor — before any automatic corrections take place. This means you’re seeing the full, unedited optical character of your lens.

How to Fix It

You can manually correct these effects in the Develop RAW tool under the Optics section. Here's how:

  • Check the Auto Distortion Correction box

  • Use the Lens Distortion slider for manual tweaks

  • Enable Auto Defringe to correct color fringing

  • Apply Devignette to reduce dark corners

These tools help you straighten lines, balance the frame, and reduce visual distractions from lens-related flaws.

Q&A Section

🔍 What is lens distortion? It’s when straight lines in the real world appear curved in your photo.

  • Barrel distortion = lines bulge outward (common with wide-angle lenses)

  • Pincushion distortion = lines curve inward (often seen with telephoto lenses)


❓ Why does it happen? It's a natural result of lens optics and design compromises. Perfect correction is complex and expensive, especially for zooms or wide/telephoto lenses.


🖼️ Why do I see it in RAW files but not in camera JPEGs? JPEGs are processed in-camera, including automatic lens distortion correction. RAW files are unprocessed sensor data, showing the lens's inherent distortion before corrections.


👁️ So Neo shows the uncorrected RAW image initially? Yes! What you see is a more honest, unprocessed version of what your lens and sensor captured.


🧠 Does Luminar Neo fix this automatically? In most cases, yes. Luminar Neo has a built-in database of lens profiles. If it recognizes your camera and lens combo, it will apply the appropriate distortion correction automatically.


🔎 How does Neo know how to fix it? Using Lens Profiles—data files that describe how each lens typically distorts an image. Neo reads this info from the RAW file’s metadata and applies the proper correction.


⚠️ Why might automatic correction fail? There are a few possible reasons:

  • Your lens is new or uncommon, and not yet in Neo’s profile database

  • Your version of Luminar Neo is outdated

  • You’re using a manual lens, which doesn’t embed EXIF data (so Neo can’t detect or correct it)


📉 Does correcting distortion hurt image quality? Technically, yes — it involves stretching or compressing parts of the image, which may slightly soften edges. But the visual benefit of correcting curved lines usually far outweighs any minor loss in sharpness. It’s a normal and expected part of RAW editing.

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