[sane-devel] epson 2400 neg scans
> The Perfection 1670 and the 2400 look interesting. It appears that the > former is not supported by sane and runs on a different chip set to > other Perfection scanners so I'll stike that from the list. > Peter, I've got an Epson Perfection 1670 Photo and I'd be glad to answer any questions you (or anyone else on this mailing list) have. Please Cc me as I haven't subscribed to this list. Pros: - Works under both Linux's scanner kernel module and libusb. - I've gotten it to work under both Debian unstable (very easy, glorious apt-get) and Red Hat 9.0 (heavily mangled with alien-converted debs). - I was also able to get the Epson firmware file using unshield (CVS version from the synce project). Else, you can get it from: http://www.commercialventvac.com/~jeffs/epson1670andFedora.html - Flatbed scanning (ie not transparency) works even up to the maximum resolution of 1600dpi. Jeff's result (above) maybe caused by the older sane-backend-1.0.13 -- shrugs. - The transparency scanning works to the extent that the fluorescence light can be controlled from sane. Cons: - A bit expensive IMHO. - The four scanner buttons doesn't have any effect. - Film scanning seems to introduce fine lines (only noticeable at high resolutions) that isn't due to the negative. - Not sure which component is at fault, but the colour of the film/negatives aren't properly calibrated. As far as I'm concerned, film scanning of the 1670 isn't usable under sane. Of course, it is distinctly possible that I haven't got things setup correctly as I've never played with film (35mm Kodak) scanning before. It is also possible that the CVS version of sane-backend fixes some of the above problems (currently using 1.0.14). BTW, thank you to the developers who integrated 1670 support into sane. Cheers Eddie
[sane-devel] epson 2400 neg scans
On Sun, 13 Jun 2004 ins...@piments.com wrote: > You say that this only happens on high res but later that higher res is > not availible on transparency. Could you be more specific? I sounds a bit > contradictory. > High res *is* available under transparency (up to 1600dpi), just not very useful due to lines appearing. > What res. works correctly (no lines) and what is the max you can scan a > neg. even if the output is poor? > Okay, I did more experiments and even at 200dpi, I can see lines. The weird thing is, these lines remain even if I simply scan an opaque piece of paper (while in transparency mode). Maybe the backend is buggy. Maybe there's some calibration that the scanner or scanner's firmware that weirds sane out. I haven't tried it under Windows either, so... Note that transparency mode does more than switching on the fluorescent light on the transparency cover. For example, in transparency mode, it isn't possible to scan an A4 page as you're limited to an (approx) A6 area. Whether this is a scanner or sane limitation I don't know. I'll see whether I can upload an sample image with lines onto a webpage in the coming days. === BTW Not related to the scanner or scanner backend itself, but I've been told off-list that due to a lack of accurate colour calibration under Linux, 35mm negative scanning doesn't work anyhow -- regardless of the scanner used. I'm *really* hoping someone will respond telling me how utterly wrong I am and that Free as in speech software is just an apt-get away and that it works flawlessly with my scanner... Cheers Eddie
