Quote Originally Posted by Marco B View Post
Hi all,

I today for the first time scant a Fuji color negative film (Reala 100). Now, besides the fact that this seems to be a pretty coarse grained film compared to some other 100 ISO color negative films like the new Ektar 100, I also noticed that the grain structure seemed to be different. I especially was intruiged by the apparant "pinkish" grains, see the scan below, that almost seem like light colored "holes" punched in the negative. I have not seen this type of grain structure before. Is the grain structure of Fuji color negative really that different from Kodak's? Or is this a sign of some kind of bad processing?

Please note that the scan is a 100% - "actual pixels" - crop of a huge 6300 pixels-per-inch scan.

I think you have simply pushed beyond the limits of the technology, in more then one way, and when you do that, things start to fail really quickly.

First the film, if your going from a 35mm negative, a 40x50cm (16x20) is considered just about the limit for a 35mm negative, and that's only with very fine grained and slow film, so a 120x180cm enlargement is well beyond what analog enlargements can expect from the film. For an enlargement that size a 10x12cm negative would be best.

Now the scan, unless your using a high end drum scanner, no flatbed scanner or film scanner comes anywhere near the resolution in hardware, some will let you pick a higher resolution, it then uses software to increase the resolution, there are about 10 different formulae for increasing that resolution, some work better with some images then others, so if the scanner uses only one formula (most do), then that formula may have failed your image.