I want to scan a photograph using the flatbed scanner in my all-in one printer (Samsung C460W). The long side of the photograph is shorter than the short side of the scan bed, so I could scan it in either landscape or portrait orientation.
Would either of these orientations produce a higher-quality result? The specifications say it can scan at 600x600 dpi, but I assume that in the scanning direction this is achieved by the movement of the scan had, whilst in the perpendicular direction this is limited by the scan sensor's resolution. So if I align e.g. the short size of the photograph with the short size of the scan bed, I am not utilizing the maximum possible sensor photocells.
Does either of the two directions have a higher quality and if so, which one?
(I cannot see a striking difference in images scanned in the two different directions, so I suppose the differences - if any - are small. But I am still interested to know whether there is an academic difference.)