Nikon LS-3500 - LS-3510 - Manual (Page 39)

Using The Macintosh Scanner Plugin 5-7
Software Reference for Scanners
> Note Although the ratio of scanned pixels to output halftone dots is traditionally
2:1, ratios as low as 1:1 can be acceptable in certain applications. We
recommend 1.5:1 for most medium to high resolution four color offset
reproduction.
Fig. 31 Resolution and Size Controls
The crop will automatically resize itself as you do this, and you will end up
with the following display:
Fig. 32 Preview Window Crop
The scan pitch automatically changes to allow for the scan size requested.
You may now move the crop to cover any area of the preview that you wish
to scan by placing the crosshair cursor over the crop box, holding down the mouse
button and dragging the box to the new location.
If you now want to shrink or expand the crop while keeping the same output
resolution and size, you must check the File Size: checkbox. You will now be
able to resize the crop without worrying about changing your output scan
parameters.
In the second example, select a crop in the preview area, and then make the
crop 8 inches wide at 300 dpi. After that, make it 10 inches tall. The important
thing is to get it wide enough to include the elements that you wish to see.