Izibuko eziningi zineziteshi ezimfishane namashaneli amade. Ukukhethwa kwesiteshi kubalulekile. Ngokuvamile, siqale sicabange ukukhetha isiteshi esifushane, ngoba isiteshi esifushane sizoba nenkundla enkulu yokubuka, ehambisana nendlela yokuphila yabantu abavame ukubheka omakhalekhukhwini babo. Umehluko phakathi kwamehlo ukhulu kakhulu, amehlo ekhono eliphansi lokujikeleza kwabantu, libuye lifanele iziteshi ezimfushane. Uma umthengi egqoke i-multi-focus okokuqala, enesidingo sebanga eliphakathi, futhi i-Add iphakeme kakhulu, khona-ke isiteshi eside singacatshangelwa.