ɔnðɪ ˈʌðɚ hˈænd, ˈɔːl θɹˈiː mˌænjuːfˈæktʃɚɹɚz sədʒˈɛstᵻd ðætðɪ ˈaɪpiːs ʃˌʊd biː blˈɑːkt dˈʊɹɹɪŋ mˈeɪnsˈɛnsɚ lˈaɪv pɹˈiːvjuː tə pɹɪvˈɛnt lˈaɪt ˈɪŋɡɹɛs ɐfˈɛktɪŋ ðə pɹˈɑːsɛs, bˌʌt ˈoʊnli ðɪ ˈiː θɹˈiːhˈʌndɹɪd θˈɜːɾi ɪŋklˈuːdᵻd ɐ bˈɪltɪn ˈaɪpiːs ʃˈʌɾɚ, ˈɑːpɚɹˌeɪɾᵻd baɪ ɐ lˈɛvɚ nˈɛkst tə ðɪ ˈaɪpiːs.
On the other hand, all three manufacturers suggested that the eyepiece should be blocked during main-sensor live preview to prevent light ingress affecting the process, but only the E-330 included a built-in eyepiece shutter, operated by a lever next to the eyepiece.