Corner falloff
Vignette comparison
Image Vignette Comparison
Adjust vignette amount, radius, and feather while comparing edge falloff against the original.
- Browser-local processing
- PNG · JPG · WebP
- No account needed
Original vs current edit
Compare the original image with the current adjustment state.
Upload an image to compare vignette before and after with corner and center metrics.
Center preservation
Feather softness
Edge brightness
Advanced metrics
Upload an image to calculate luma, clipping, contrast, and chroma metrics.
Luma histogram
Histogram appears after an image is uploaded.
Original Current edit
Image session actions
Upload an image to compare vignette before and after with corner and center metrics.
How to read this page
Vignette changes edge and corner falloff
Vignette comparison focuses on how image corners and edges become darker or lighter than the center. A creative vignette can guide attention, while correction-style vignette can reduce lens falloff.
Scope
This page compares vignette falloff. It is not a crop, border, framing, or exposure page.
Vignette comparison guide
What Vignette Comparison Shows
Compare corner falloff
Check how much the corners changed compared with the center when you add vignette to a photo.
Read feather softness
A soft vignette blends gradually; a hard vignette can look artificial.
Creative vs correction vignette
Dark vignette draws focus inward; light vignette can compare correction-style edge lightening.
Vignette terms and falloff checks
How to Read an Image Vignette Comparison
Image vignette comparison is for judging edge and corner falloff. It should stay separate from crop, border, framing, and global exposure decisions.
A useful review compares corner brightness, center preservation, edge brightness, midpoint, and feather softness. The center should usually remain stable while the falloff changes gradually.
Corner falloff
Corner falloff is brightness change near the image corners.
- Role in the image
- It shows how much the vignette changed the edges relative to the center.
- Concept or calculation
- Compare mean luma in corner masks against the center mask before and after.
- Watch for
- Too much falloff can make corners look muddy or obviously edited.
Midpoint
Midpoint is the radius where the vignette begins to become visible.
- Role in the image
- It controls whether the effect reaches into the subject area.
- Concept or calculation
- A radial distance from image center can be mapped to an effect curve.
- Watch for
- A low midpoint can darken the subject instead of only the edges.
Feather
Feather is the softness of the transition from center to edge.
- Role in the image
- It makes the vignette blend gradually or appear hard-edged.
- Concept or calculation
- A wider transition band creates softer falloff.
- Watch for
- Hard feather settings can look like a border instead of natural falloff.
Center preservation
Center preservation describes whether the subject area remains mostly unchanged.
- Role in the image
- It keeps the vignette from acting like an exposure change on the whole image.
- Concept or calculation
- Center luma delta can estimate how much the middle changed.
- Watch for
- If center delta is high, reduce amount or adjust midpoint.
Lens vignetting
Lens vignetting is natural optical corner darkening.
- Role in the image
- The page can compare correction-style edge lightening against the original.
- Concept or calculation
- A light vignette can raise edge brightness, but it does not estimate a camera or lens profile.
- Watch for
- Lens correction should not make corners brighter than the subject area.
Vignette vs exposure
Exposure changes the whole image. Vignette changes brightness based on distance from the image center.
Vignette vs crop
Vignette can guide attention, but it does not change composition or remove distracting edges the way cropping does.
FAQ
About this page
Is vignette the same as exposure?
No. Exposure changes the whole image. Vignette changes brightness based on distance from the image center.
Can this remove lens vignetting?
It can compare correction-style edge lightening, but it does not estimate a camera or lens profile.
What makes a vignette look natural?
Usually a soft feather, moderate amount, and preserved center brightness.