Lens Problem No. 3: Converging Verticals
You’ll usually see this when you’re shooting architecture from ground level with standard to wide-angle lenses (download our free architecture photography cheat sheet).
Tilting the lens has the effect of distorting the scene’s perspective, causing the building’s verticals to converge towards the top of the frame.
Either hire or buy a dedicated tilt-and-shift lens, which can be used to straighten verticals, or apply a perspective tweak later in Photoshop.
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