, ▁and ▁over ▁two - and - a - half ▁hours ▁of ▁foot age ▁was ▁taken ▁for ▁the ▁make - up ▁portion ▁of ▁the ▁film . ▁This ▁was ▁eventually ▁cond ensed ▁to ▁ 2 3   seconds ▁in ▁the ▁final ▁version . ▁The ▁stage ▁was ▁dressed ▁in ▁a ▁manner ▁identical ▁to ▁that ▁of ▁modern ▁fashion ▁sho ots , ▁with ▁the ▁light ing ▁and ▁camera ▁being ▁position ed ▁to ▁remove ▁any ▁sh adows ▁from ▁Bet ts ' s ▁face ▁to ▁aid ▁in ▁the ▁post - production ▁ret ouch ing . ▁Sound ▁design ▁took ▁three ▁weeks , ▁and ▁was ▁divided ▁into ▁two ▁sections . ▁Fif teen ▁hours ▁were ▁spent ▁creating ▁several ▁mix es ▁of ▁" Pass age ▁D " ▁with ▁each ▁mix ▁tested ▁and ▁disc arded ▁before ▁the ▁version ▁used ▁in ▁the ▁final ▁film ▁was ▁settled ▁upon . ▁A ▁further ▁nine ▁hours ▁were ▁spent ▁adding ▁in ▁the ▁various ▁background ▁no ises ▁to ▁the ▁piece , ▁including ▁sp ed - up ▁human ▁voices , ▁a ▁st arter ▁p istol ▁and ▁gal lop ing ▁race h ors es . ▁ ▁Post - production ▁at ▁So H o ▁was ▁originally ▁planned ▁to ▁take ▁approximately ▁three ▁days , ▁but ▁it ▁was ▁extended ▁to ▁two ▁weeks . ▁G abor ▁Jur ina , ▁the ▁photograph er ▁responsible ▁for ▁the ▁digital ▁ret ouch ing ▁of ▁the ▁actual ▁photograph s ▁taken ▁of ▁Bet ts ▁during ▁the ▁shoot , ▁supplied ▁the ▁post - production ▁team ▁with ▁ 1 1 8   dig ital ▁still s ▁of ▁the ▁intermediate ▁stages ▁of ▁the ▁transformation ▁from ▁the