Isticmaalka servo linear drive, dhererka gelinta filimka dhexda shaashadda taabashada.Mindida duubista, filimka si toos ah ayaa loo gooyn karaa.Xariiqda ilka-sawirka ayaa si toos ah loo riixi karaa oo sidoo kale gooyn karaa afka filimka (sida sanduuqa nudaha wejiga).Isticmaalka dhululubo nuugid si aad ugu qabato filimka la gooyey meel bannaan, booska filimkana waa la hagaajin karaa iyada oo aan la joojin.