EFL BFL FFL da FBL

EFL (Tsarin Tsawon Tsawon Tsawon Lokaci), wanda ke nufin ingantaccen tsayin daka, an bayyana shi azaman nisa daga tsakiyar ruwan tabarau zuwa wurin mai da hankali. A cikin ƙira na gani, tsayin mai da hankali an kasafta shi zuwa tsayin hangen nesa-gefen hoto da tsayin wuri-gefen abu. Musamman, EFL ya shafi tsawon hangen nesa-gefen hoto, watau, nisa daga babban jirgin saman gefen hoton zuwa wurin mai da hankali kan hoto. A matsayin ɗaya daga cikin ma'auni masu mahimmanci a cikin ƙirar tsarin gani, EFL yana tasiri sosai akan aikin tsarin. Tsawon hankali wanda ya yi tsayi da yawa na iya haifar da faffadan filin hangen nesa, wanda zai haifar da tsananin murdiya da ƙalubale wajen sarrafa kusurwar fita na babban hasken. Akasin haka, tsayin daka mai tsayi da yawa zai iya hana ƙayyadaddun ƙirar tsarin kuma ya kasa cika buƙatun aikace-aikace saboda kunkuntar filin kallo.

BFL (Back Focal Length), ko tsayin hangen nesa na baya, an ayyana shi azaman nisa daga saman baya na ruwan tabarau na ƙarshe a cikin tsarin gani zuwa hoton hoton. A matsayin maɓalli mai mahimmanci a ƙirar gani, BFL kai tsaye yana tasiri ga tsayin tsarin gabaɗaya da daidaiton tsayin hangen nesa na baya. Sabili da haka, dole ne a yi la'akari da shi a hankali yayin tsara tsarin.

FFL (Length Focal Fort), ko tsayin hangen nesa na gaba, yana wakiltar nisa daga gaban gaban ruwan tabarau na farko a cikin tsarin gani zuwa saman abu. Yana da mahimmanci a lura cewa FFL ya bambanta da gaske daga FBL (Flange Focal Length). Tsohon yana nuna nisa na gani, yayin da na karshen yana nufin nisa na inji.

FBL (Flange Focal Length), ko flange mai tsayi, an ayyana shi azaman nisa daga saman injin na ƙarshe zuwa saman hoton ƙungiyar ruwan tabarau. A cikin ƙirar kyamarori da musaya na ruwan tabarau, FBL wani muhimmin ma'auni ne wanda ke ƙayyadadden matsayi wanda aka ɗora ruwan tabarau akan kyamarar.

A taƙaice, waɗannan sigogi suna da makawa a cikin ƙirar ruwan tabarau na gani. Ba wai kawai suna tasiri kai tsaye aikin ruwan tabarau da ingancin hoto ba amma kuma suna tasiri sosai akan yuwuwar ƙirar tsarin.