(1) Nous avons de charmants tableaux par ici. (We have some charming pictures over here.)
(2) Est-ce que vous avez des pantoufles ? (Do you have any slippers?)
Both refer to something in the plural (e.g. charmants tableaux) but the 1st has "de" which looks singular, whereas the 2nd has "des".
Is that because there's an adjective preceding it in (1) or am I missing something?