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I have the Canon CanoScan LiDE 220 Compact Scanner, it claims to be able to scan at 4800 x 4800 dpi. However when I try and scan at this dpi, it says it cannot scan a full A4 photo and tells me to reduce the scanning area down to something just a few centimetres by a few centimetres wide.

Is there anyway to bypass this, how could I scan the entire A4 photo at 4800 dpi?

I'd even settle for 2400 dpi, but it won't allow you to scan an A4 photo at that dpi either. It only allows a small area to be scanned at any high resolution.

Has any experienced this or know a work around, or would it not be a software restriction rather hardware related?

To avoid the replies saying I don't need that high dpi for basic photos:

I'm scanning old toy boxes, which flattened are around A4 size. I need the huge files and with as much detail as possible because I am going to restore the torn areas and cracks in the color etc in Photoshop, so the bigger the image the better the restoration can be.

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    An A4 print is unlikely to have a resolution higher than 600dpi anyway, scanning at more than that is just a waste of resources. – ths Oct 27 '16 at 17:25
  • Well, the "Photography" confusion is because this is the "Photography" section :o) The specific case is probably a Graphic design one. But I would answer the same on the other forum. – Rafael Oct 27 '16 at 19:19
  • True, maybe that would be a better place for the question @Rafael :) – GoldenGonaz Oct 27 '16 at 19:43
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    @Rafael It's a little tangential, to be sure, but I imagine that a lot of us scan prints, slides and negatives. – Mick Oct 27 '16 at 19:45
  • Have you tried Vuedcan? It includes its own drivers which may not have the sabe limitations. – Stevetech Oct 30 '16 at 7:52
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Oh my. Why on earth would you need to scan something at 4800 ppi?

That would give you a file of 39840x56160 or a 2,237 Megapixels... a really pro normal digital shoot has rougly 80 to 100 Megapixels (not two thousand).

The restrictions are likely for people do not freeze its computer or fill their hard drive with just 50 scans.

A normal photo can be scanned at 200-300 dpi, and they will be fine.

I would only use 4800 ppi to scan slides or negatives, probably a collectable postage stamp or if I wanted to forge bills... All thoose cases the phisical size is smaller than A4.


Edited based on the coment.

I would use 1200ppi. It is a recomended scan for line art.

There is a chance your images have some of this line art, but at the end will be converted to a halftone because you will be scanning to RGB.

2400 ppi is probably too high even for this project. You are not scanning the original art, but the imperfections of the print and paper. That is not part of the original design.

  • I have the HDD space and 64GB ram so my computer is capable of handling it. I'm scanning old toy boxes, which flattened are around A4 size. I need the huge files and with as much detail as possible because I am going to restore the torn areas and cracks in the color etc, so the bigger the image the better the restoration can be. – GoldenGonaz Oct 27 '16 at 19:03
  • Interesting project. I edited my answer a bit. – Rafael Oct 27 '16 at 19:17
  • You've jogged my memory. There is a reason to scan higher than 1200ppi. – Mick Oct 27 '16 at 19:19
  • Do you want to forge bills? Shame on you! – Rafael Oct 27 '16 at 19:22
  • @Rafael Me? No. More anon. – Mick Oct 27 '16 at 19:39
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It is likely to be a marketing restriction to encourage serious (or gullible) users to buy more expensive models. The limitation is likely to be built into the device drivers rather than the scanner itself. This means that using other applications is unlikely to resolve the issue since application software must use the supplied device drivers.

However, you are unlikely to ever need 4800dpi resolution unless you are scanning specialist items. I normally scan everyday A4 documents at 300dpi on my Epson V600 scanner, or 600dpi if I want to use the scans for OCR. I normally scan photographic prints at 1200dpi. If I go higher than that, I can see no noticeable improvement in image quality. The same was true when I used a Canon LiDE 80 scanner.

I suggest that you experiment and do some test scans at various resolutions. I would be surprised if you find any benefit in going higher than 1200dpi.

  • It would be instructive to know what resolutions other users use, especially for scanning images. Maybe the mods would allow it? – Mick Oct 27 '16 at 18:15

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