BraveCLHow to straighten a building photo on Mac
Correct converging building lines on Mac by setting four perspective corners, applying the correction, and framing the result.
- What you'll achieve
- You will have a framed, straightened view of a building facade, with the original source visible for comparison.
- What you need
- Install and open Perspective Photo Fix for macOS.
- Have a photo with a clearly visible building face or other rectangular plane.
- Use a photo with enough resolution to allow cropping after perspective correction.
Tall buildings often look as though their vertical edges lean together when photographed from below. Perspective Photo Fix lets you define the building plane with four corners, transform it, and crop the corrected result. Follow this glass-facade example to learn the full correction and framing workflow.
1.Start with a perspective correction example
Open Perspective Photo Fix and select Architecture Vertical under Correction starters. The Source and Result panes show the sample architecture photo and its four corner handles.
Perspective Photo Fix showing the Architecture Vertical sample, blue perspective corner handles, and the Perspective inspector. 2.Open the building photo you want to correct
Use the photo control to open your building image, then confirm replacing the sample if prompted. Check that your facade appears in Source on the left and Result on the right.
Glass facade photo open in Source and Result, ready for perspective correction. 3.Place the four perspective corners on the facade
In Perspective, drag the four blue corner handles over the building plane you want to straighten. Move the upper corners inward to follow the top edges, then adjust the two lower corners to the base of the facade. Check that all four handles remain on the photo.
Four blue perspective handles placed along the sides of the glass-building facade. 4.Apply the perspective transformation
Click Apply Perspective. The Result pane updates to the transformed facade. Empty triangular areas around the image are expected before you set the final frame.
Transformed building facade in the Result pane with blank wedges before framing. 5.Choose the final frame
Switch to Frame, click Use Reference Frame to place a frame over the corrected building, and click Use Frame to apply it. Review the frame handles so the output includes the portion you want.
Frame workspace showing the reference frame and final crop handles over the corrected facade. 6.Compare the straightened photo with the original
Return to Correct and hide the inspector for a larger comparison. The Source pane retains the perspective handles while Result shows the framed facade with straighter building edges.
Side-by-side source and straightened, cropped result of the building photo.
After the last step
You can repeat the corner adjustment and framing process for other architecture photos.
Tips
Start with the Architecture Vertical correction starter to see a complete example before loading your own image.
Place handles on one flat facade, not on unrelated foreground objects. The quadrilateral should enclose the part you want to straighten.
If the corrected result has blank wedges around the edges, use Frame to choose a clean central composition.
Compare Source and Result after framing, then return to the perspective handles if any edges still lean.
Watch outPerspective correction can stretch edges and discard pixels; leave room around the building when you choose the frame.
Watch outDo not place a handle outside the source image; keep the four-corner selection valid before applying the correction.
