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Fix Lens Problems, Like Bulging?

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To fix that lens distortion that causes things like doorways and buildings to look like they’re bulging outward toward the viewer, click on the Len Corrections icon (it’s the sixth one from the left) beneath the histogram, then click on the Profile tab, and first try turning on the Enable Lens Profile Corrections checkbox (as seen in the inset). That alone will sometimes fix the problem (make sure you see your lens make and model in the pop-up menus below the checkbox. If you don’t, choose it from those menus—usually just choosing the brand will be enough for it to find the exact lens you used from its internal database). If the profile correction helped, but not quite as much as you’d like, in the Correction Amount section is a Distortion slider that lets you fine-tune the amount—just drag it to the right. If that still isn’t enough of a fix, click on the Manual tab, and then drag the Distortion slider at the top to the right until the bulging flattens out (yes, you’ll have to crop the edges away when you’re done).

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