Hi,

2017-05-21 18:51 GMT+02:00 geni <geniice@gmail.com>:
On 21 May 2017 at 12:38, Flor Méchain <flor.mechain@wikimedia.ch> wrote:
> Hello!
>
> I am in touch with a museum that is thinking of uploading images to Commons.
> They are a bit uncertain about uploading high resolution, but I told them
> the resolution they need to upload just needs to be good enough for
> illustrating articles without being pixellated. The thing is, I am unsure
> about the minimum size of such an image. I tried poking around the
> instructions but didn't find a direct answer.
>
> Do you know which size is "the minimum" that can be accepted on Commons?
>
> Thanks a lot for your help!
>
> Warm wishes,

As others say, 2 Mpixels should be the minimum resolution, although it is a bit small to do any work (i.e. restoration).
That's the minimum requirement for quality and featured images on Commons.

For doing restoration, it is quite comfortable around 12 Mpixels (4000 x 3000).
That's what most cameras offer today.

> geograph's 640 × 480 is the lowest widely used resolution.

Any that small resolution should be refused nowadays.

Regards,

Yann

>
> --
> geni