Crop selected images in Camera Raw

In the Camera Raw dialog box, select the Crop tool (or press C).
To constrain your initial crop area to a specific aspect ratio, hold the mouse button down as you select the Crop tool , and choose an option from the menu. To apply a constraint to a previously applied crop, Ctrl-click (Mac OS) or right-click (Windows) on the crop.
Drag in the preview image to draw the crop area box.
To move, scale, or rotate the crop area, drag the crop area or its handles.
When you are finished, the cropped area of the image remains visible, but is dimmed in the image preview.

Note: To cancel the crop operation, press Esc with the Crop tool active, or click and hold the Crop tool button and choose Clear Crop from the menu. To cancel the crop and close the Camera Raw dialog box without processing the camera raw image file, click the Cancel button or deselect the Crop tool and press Esc.