Yadda za a zabi binoculars

yadda za a zabi binoculars

Kasuwar tana ba da katalogi mai yawa na binoculars inda za mu iya kwatantawa da zaɓar mafi kyawun binoculars don aikace-aikace iri-iri ciki har da kallon tsuntsaye, kwale-kwale, zango, farauta, wasanni, kide-kide, sa ido, ilmin taurari, da ƙari. Don koyo yadda za a zabi binoculars yana iya zama ɗan rikitarwa. Ko menene buƙatun mai amfani, akwai na'urori masu ɗorewa tare da ingantaccen ƙira da aiki don manufarsu. Don zaɓar mafi dacewa binoculars, dole ne mu yi la'akari daban-daban masu canji kamar yanayi, takamaiman abubuwan da ake so, ayyuka, da sauransu.

A saboda wannan dalili, za mu sadaukar da wannan labarin don gaya muku yadda ake zabar binoculars, halaye da mahimmancin su.

Yadda za a zabi binoculars

nau'ikan binoculars

Haskaka da bayyanannun hotuna da ake gani ta hanyar binoculars, musamman, an ƙaddara su ta hanyoyi daban-daban. Girma, maganin ruwan tabarau da diamita na haƙiƙa wasu ne kawai daga cikin abubuwan da suka shafi aikin binoculars.

Koyaya, ainihin ma'aunin binoculars shine ingancin gani. Celestron ƙima ce ta alamar kuɗi wacce ke ba da ingantattun na'urorin gani godiya ga gilashin da aka zaɓa a hankali da jiyya na gani, madaidaicin hanyoyin masana'anta da babban iko mai inganci.

.Ara

Girmamawa shine matakin ƙara girman abin da aka lura. Misali, a cikin binoculars 7x42, lambar 7 tana nufin "girman kayan aiki." 7x binoculars suna ɗaukaka abubuwa sau 7 dangane da idon ɗan adam. Girman girma yana shafar haske na hoton, don haka ƙananan girman girman binoculars, mafi kyawun hoton zai kasance. A matsayinka na yau da kullun, haɓakar haɓakawa yana haifar da raguwar ra'ayi.

Maƙasudin diamita na ruwan tabarau

Maƙasudin ruwan tabarau na binoculars yana a gaba kuma yana da mafi girman diamita. Diamita (a cikin millimeters) na ɗayan ruwan tabarau shine sifa ta biyu na binoculars. A wannan yanayin, 7x42 binoculars suna da maƙasudin diamita na 42mm. Diamita na ainihin ruwan tabarau yana ƙayyade ikon tattara haske na binoculars, don haka girman diamita, mafi haske kuma mafi ƙanƙanta hoton. Wannan yana da amfani musamman a cikin ƙananan haske da kuma da dare.

Wannan na iya sa ka ɗauka cewa mafi girman diamita, mafi kyawun kayan aiki, amma a zahiri, diamita na ruwan tabarau tare da wasu sigogi kamar ɗalibin fita da kuma amfani da binoculars dole ne a yi la'akari da su don ƙayyade mafi dacewa sigogi.

fita almajiri

Za'a iya bayyana "almajirin fita" a matsayin diamita, a cikin millimeters, na hasken hasken da ke fitowa daga guntun ido na binoculars. Girman almajirin fita, zai ƙara haske sakamakon hoton. Samun babban almajiri na fita yana ba da sauƙin dubawa da dare da ƙaramin haske. A cikin aikace-aikacen ilimin taurari, ɗalibin fitowar binocular ya kamata ya zama daidai da matakin da ɗalibin mai duba ya faɗi yayin da ya daidaita zuwa duhu.

Don ƙididdige ɗalibin fita, raba diamita na haƙiƙa ta hanyar haɓakawa. Misali, 7x42 binoculars suna da ɗalibin fitowa 6mm.

Filin Kallo (FOV)

binoculars

Wurin da ake iya gani ta hanyar binoculars ana kiransa filin kallo. Filayen kallo yawanci ana nunawa a waje na binoculars kuma ana auna shi cikin digiri. Filin duban layin layi shine yankin da ake gani a yadi 1000 (mita 915), wanda aka auna da ƙafafu. Babban filin kallo yana fassara zuwa babban yanki da ake gani ta hanyar binoculars.

Filin kallo yana da alaƙa da haɓakawa, mafi girman haɓakawa, ƙaramin filin kallo. Bugu da ƙari kuma, babban filin kallo yana haifar da raguwa a cikin ido / ido. Faɗin ra'ayi yana da amfani a cikin yanayi inda abubuwa ke motsawa. Don ƙididdige filin hangen nesa, ninka kusurwar filin kallo da 52,5. Misali, binoculars tare da filin kallon 8o yana rufe filin kallon madaidaiciyar ƙafa 420 (mita 126).

Lens/nisa ido

Wannan ra'ayi yana nufin nisa (a cikin millimeters) wanda za a iya raba binoculars daga ido yayin da yake kiyaye filin kallo mai dadi. Masu sanye da tabarau za su amfana daga nesa mai nisa.

Mafi ƙarancin tsayi mai tsayi

Yana da nisa tsakanin binoculars da abu mafi kusa wanda za'a iya mayar da hankali yayin kiyaye hoto mai kyau.

Haske

Ƙarfin binocular don kamawa da watsa isasshen haske don samar da haske, bayyanannen hoto yana ƙayyade haskensa. Hasken binoculars kuma yana haɓaka bambanci tsakanin launuka a cikin hoton da aka gani.

Indexididdigar Haskakawa (RBI), Fihirisar Twilight da Ingantacciyar Hasken Dangi (RLE) sune fihirisa da aka saba amfani da su a masana'antar binocular, amma a lokuta da yawa an yi musu rashin fahimta ko ra'ayoyi marasa ma'ana.

Haske shine ra'ayi da za a yi la'akari lokacin zabar binoculars, amma ba shine mafi mahimmancin mahimmanci ba.

Hasken ya dogara da sigogi da yawa, gami da diamita na haƙiƙa, haɓakawa, nau'in da ingancin gilashin da aka yi amfani da su, sarrafa na'urorin gani, da nau'in prism da ake amfani da su. Gabaɗaya, babban diamita, ƙaramin iko ko matsakaici, cikakken ruwan tabarau masu rufi da yawa sun fi dacewa.

Kurkuku

yadda ake zabar hotunan binoculars

Ana amfani da prisms a cikin binoculars don juyar da hotuna kuma suna zuwa cikin ƙira biyu: rufi da sanda. Rufin prisms sun fi sauƙi kuma sun fi dacewa ta ƙira. Sunan prisms BK7 (borosilicate) da BaK-4 (gilashin barium). Dukansu suna da arha kuma suna da tasiri sosai. Gilashin zanen BaK-4 yana da girma mai yawa (ƙididdiga mai jujjuyawa) wanda kusan yana kawar da ɓoyayyen haske na ciki, yana haifar da hotuna masu ma'ana.

Kari

Bambanci shine matakin da abubuwa biyu masu haske da duhu suka bambanta da bangon hoto. Babban bambanci yana taimakawa wajen ganin abubuwa marasa ƙarfi da fahimtar cikakkun bayanai. Ƙuduri yana shafar bambance-bambance.

Mafi girman ƙuduri, mafi girman bambanci. Babban aikin gani na gani yana ba da hotuna masu girma dabam. Sauran abubuwan da ke shafar bambanci sune haɗuwa, tashin hankali na iska, da ingancin maƙasudi, prisms, da kayan ido.

Ina fatan cewa tare da wannan bayanin za ku iya ƙarin koyo game da yadda ake zaɓar binoculars da abin da ya kamata ku yi la'akari.


Abubuwan da ke cikin labarin suna bin ka'idodinmu na ka'idojin edita. Don yin rahoton kuskure danna a nan.

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