Automatic focus uses the center of the frame as its reference, but it can be performed on a user-designated location anywhere within the frame if desired. If automatic color balance is in use, it is set based on the area surrounding the autofocus target, as well. The two images which follow illustrate these features. This is a section taken from the lower left-hand portion of the image. This is the same image section, but the autofocus point was placed in the center of the area visible here.
Film grain is clearly visible in the enlarged version.
Due to the color shift in this region, the scanner has altered the default color balance to compensate. As you can see, the glassless negative carrier can cause some problems if your film really doesn't want to stay flat.