Restore the camera image that you minimized earlier. Make a duplicate of the image by pressing the Shift and D key on your keyboard. Close the original in case you want to use it later. Click Image > Resize . The Resize dialog box will open. Resize the image to 100 pixels wide. Make sure there is a check placed in the Lock aspect ratio box so the height will adjust accordingly to match the new width. Click OK to apply and close the dialog box.