Camera Raw Crop

Using the Crop tool in Camera Raw.

-Crop Tool

-Cropping

Crop Tool

While in Camera Raw, navigate to the Crop tool on the top of Camera Raw and click it. You'll notice that the crop tool has a few options. These numbers displayed as 1 to 1, 2 to 3, 3 to 4 and so on are width to height ratios for cropping your image. Usually it's easier to just use a Custom crop, or the Normal option, which just defaults to Custom.
Next, with the tool selected, you can click and drag from one corner of your image to another, but leave some space out of the image that you don't want. In this senario we've cropped out some of the space to the left of the barn that we didn't want.

Cropping

Here's a larger example of what we've done. The grayed out areas are showing us what's being cropped out of the image. You can always adjust this by grabbing any of the little handles and moving them as well. Remember you can hold down the "Option" key on a Mac or "Ctrl" key on a PC and the Cancel button will change to a Reset button so that you can reset the image before the crop if you don't like how it was looking. The great thing now is that if you hit done, or open the image, the crop that you have made will be non-destructive. This means that once it's open in photoshop the crop will still be there yes, but if you go back and open up the raw image again you'll still see the grayed out area and still be able to go back to the full image if so desired.