An artwork drawn with traditional tools without a computer. This is in contrast with "digital media" which dominate Danbooru.
Please use this tag only if you're 100% sure that the image is actually drawn by hand. Use faux traditional media for digital images that mimic a hand-drawn/non-CG style.
An image that is partly traditional, but also contains digital elements (e.g. digital spot color), should receive the additional tag mixed media. Digital filtering, performed to improve the visibility of the traditional artwork (e.g. color adjustment), rather than as a creative effect or to remove flaws, does not make an image mixed media.
A good way to tell if a drawing is traditional is to look for "analog" or アナログ in kana. You'll find this tag on Pixiv and used on some Japanese artists' sites. (Beware however that some people will tag their image "アナログ" that don't qualify to our standards of the tag).
If the image of the work is a photograph of the work, rather than a scanned work, then the tag photo (medium) is applicable.
