▁felt - tip ▁pens ▁when ▁he ▁in ked ▁" J on ni ▁Future ". ▁ ▁Although ▁Adams ▁has ▁experiment ed ▁with ▁painting ▁with ▁water color ▁and ▁oil ▁pain ts ▁( his ▁ 1 9 8 9 ▁covers ▁for ▁App les eed ▁were ▁rendered ▁with ▁a ▁combination ▁of ▁in k , ▁water color ▁and ▁color ▁p enc il ), ▁his ▁color ▁work ▁is ▁so ▁sp or adic ▁that ▁he ▁says ▁he ▁has ▁to ▁re learn ▁what ▁he ▁has ▁forgotten ▁in ▁the ▁inter im ▁each ▁time , ▁and ▁is ▁usually ▁diss atisf ied ▁with ▁the ▁results . ▁Because ▁a ▁significant ▁portion ▁of ▁his ▁income ▁is ▁derived ▁from ▁s elling ▁his ▁original ▁art work , ▁he ▁is ▁rel uct ant ▁to ▁learn ▁how ▁to ▁produce ▁his ▁work ▁digit ally . ▁ ▁In flu ence ▁ ▁Adams ▁is ▁one ▁of ▁the ▁most ▁popular ▁and ▁widely ▁im itated ▁artists ▁in ▁the ▁American ▁com ics ▁industry . ▁His ▁style ▁is ▁attributed ▁as ▁a ▁direct ▁influence ▁on ▁the ▁artists ▁who ▁would ▁found ▁Image ▁Comics , ▁and ▁the ▁other ▁popular ▁artists ▁of ▁the ▁ 1 9 9 0 s ▁associated ▁with ▁that ▁era , ▁such ▁as ▁Jim ▁Lee ▁and ▁Rob ▁L ief eld . ▁Tim othy ▁Cal la han ▁of ▁Com ic ▁Book ▁Resources ▁points ▁to ▁the ▁use ▁of ▁dynamic ▁action ▁pos es , ▁ideal ized ▁figures , ▁cost ume ▁designs ▁featuring ▁numerous ▁access ories , ▁a ▁preference ▁for ▁cop ious ▁c ros sh atch ing ▁over ▁br ush work ▁in ▁rendering , ▁and ▁the ▁dep iction ▁of ▁cy ber net