Kodi Magalasi a Telephoto Ndi Oyenera Kujambula Kuthambo Lodzaza ndi Nyenyezi? Kodi Zofooka Zawo Ndi Ziti?

Magalasi a telephoto, monga momwe dzinalo likusonyezera, ali ndi kutalika kwakutali ndipo motero ali ndi malo ocheperako owonera, zomwe zimapangitsa kuti akhale oyenera kujambula zithunzi za anthu akutali. Pa kujambula nyenyezi, magalasi a telephoto nthawi zambiri samakhala abwino kujambula thambo la usiku, makamaka pazithunzi zazikulu za mlengalenga.

1.Zoletsa kugwiritsa ntchito magalasi a telephoto kujambula thambo usiku

Kujambula zithunzi za nyenyezi nthawi zambiri kumagwiritsa ntchito magalasi okhala ndi ngodya yayikulu; poyerekeza, magalasi a telephoto ali ndi zofooka zazikulu pojambula zithunzi za thambo usiku:

(1)Malo opapatiza amapangitsa kuti zikhale zovuta kujambula thambo lonse usiku

Magalasi a telephoto ali ndi malo ocheperako owonera, nthawi zambiri osakwana 30°, ndipo sangathe kujambula Milky Way yonse kapena thambo lalikulu la usiku. Thambo la usiku (monga Milky Way) limakhala ndi malo akuluakulu (okhala ndi malo opingasa opitirira 100°).

Mukagwiritsa ntchito lenzi ya telephoto, mutha kujambula gawo lokha la thambo la usiku (monga gulu laling'ono la nyenyezi kapena nyenyezi imodzi yowala), zomwe zimapangitsa kuti zikhale zovuta kuwonetsa mawonekedwe onse a Milky Way kapena njira zazikulu za nyenyezi.

(2)Kuwonetsedwa nthawi yochepa kungapangitse kuti munthu atsale ngati nyenyezi

Chifukwa cha kutalika kwawo kwakutali, magalasi a telephoto amapangitsa kuti azitha kuwonekera nthawi yochepa kwambiri. Popanda nthawi yayitali yowonekera kuti agwire kuwala kokwanira, nyenyezi zidzawoneka ngati mizere yobisika chifukwa cha kuzungulira kwa Dziko Lapansi, zomwe zimakhudza mtundu wa chithunzi. Chifukwa chake, mukamagwiritsa ntchito magalasi a telephoto kujambula thambo usiku, zida monga zomangira za equator nthawi zambiri zimafunika kuti muchepetse zotsatira za kuyenda kwa nyenyezi.

(3)Chitseko cha dzenje ndi chochepa kwambiri, zomwe zimapangitsa kuti kuwala kusalowe mokwanira

Magalasi a telephoto nthawi zambiri amakhala ndi mabowo ang'onoang'ono, pomwe kujambula zithunzi za nyenyezi nthawi zambiri kumafuna mabowo akuluakulu (monga f/2.8 kapena f/1.4) kuti awonjezere kusonkhana kwa kuwala ndikufupikitsa nthawi yowonekera. Bowo laling'ono la magalasi a telephoto limapangitsa chithunzi chakuda, chomwe chimafuna kukhudzidwa kwakukulu kwa ISO, zomwe zimapangitsa kuti phokoso la chithunzi liwonjezeke komanso kusintha khalidwe la chithunzi.

Zoletsa kugwiritsa ntchito magalasi a telephoto pojambula thambo usiku ndizodziwikiratu

(4)Kukonza ndi kuyang'ana kwambiri n'kovuta kwambiri

Kujambula zithunzi za nyenyezi kumafuna kuyang'ana kwambiri mpaka ku nthawi yosatha (∞), koma magalasi a telephoto ali ndi malo ocheperako owonera komanso kuya kwa malo osaya kwambiri. Kuyang'ana ndi manja ndi kapangidwe kake kungayambitse nyenyezi zosawoneka bwino chifukwa cha zolakwika zazing'ono. Izi zimafuna kudalira kukulitsa mawonekedwe amoyo kuti muyang'ane nyenyezi yowala, zomwe zimapangitsa kuti ntchitoyi ikhale yovuta. Mosiyana ndi zimenezi,magalasi ozunguliraali ndi malo ozama kwambiri, zomwe zimapangitsa kuti zikhale zosavuta kupirira zolakwika zomwe zimaganiziridwa.

(5)Zofunikira kuti zida zikhale zolimba ndizokwera kwambiri

Ngakhale mutakhala ndi malo oimikapo kamera, kukula kwa lenzi ya telephoto kumawonjezera mphamvu ya kamera. Tripod yokhazikika komanso mutu wolimba wa tripod ndizofunikira, ndipo mungafunikenso kugwiritsa ntchito galasi lotsekera ndi remote shutter remote/cable release kuti muchepetse kugwedezeka kwa kamera.

Kuphatikiza apo, kujambula thambo usiku ndi lenzi ya telephoto kungafunike njira yovuta kwambiri yogwirira ntchito pambuyo pokonza zinthu kuti ithetse mavuto monga mtundu wa nyenyezi ndi kukongola kwake.

Magalasi a telephoto amafuna kukhazikika kwa zida kwambiri

2.Kugwiritsa ntchito magalasi a telephoto pojambula thambo la usiku

Ngakhalemagalasi a telephotoSizoyenera kujambula madera akuluakulu a thambo usiku, zimagwiritsidwa ntchito pa mitundu ina ya astrophotography.

(1)Kujambula zithunzi zatsatanetsatane za madera enaake a thambo la usiku

Magalasi a telephoto amatha kukulitsa madera enaake a thambo la usiku, kuwonetsa zinthu zakutali zakumwamba (monga nebulae, magulu a nyenyezi, ndi milalang'amba) kapena magawo a Milky Way, kuwapangitsa kukhala owonekera bwino mu chimango ndikuwulula zinthu zodabwitsa komanso kukula kwake.

Mwachitsanzo, angagwiritsidwe ntchito kujambula ma crater pamwamba pa mwezi, miyezi ya Jupiter, kapena tsatanetsatane wa magulu a nyenyezi otchuka monga Orion, zomwe zimapangitsa kuti pakhale zithunzi zosangalatsa kwambiri.

(2)Kulimbitsa ubale pakati pa thambo lodzala ndi nyenyezi ndi malo

Pogwiritsa ntchito "kuponderezedwa kwa malo" kwa magalasi a telephoto, malo akutali (monga mapiri kapena nyumba zowunikira) akhoza kuphatikizidwa bwino ndi thambo lodzala ndi nyenyezi, kupewa vuto la malo omwe amawoneka ang'onoang'ono kwambiri pazithunzi zazitali, ndikupanga mapangidwe apadera (mwachitsanzo, kupangitsa kuti mapiri aziwoneka ngati "akuchirikiza" gawo la Milky Way). Kuponderezedwa kumeneku kwa mlengalenga kumapangitsa nyenyezi kuwoneka zokhuthala kwambiri mu chimango, ndikupanga mawonekedwe odabwitsa.

Magalasi a telephoto amatha kuletsa ubale pakati pa thambo lodzala ndi nyenyezi ndi malo okongola

(3)Kujambula gawo la njira za nyenyezi

Magalasi a telephotoamagwiritsidwa ntchito pojambula zithunzi za njira ya nyenyezi kuti ayang'ane gawo linalake la mabwalo a njira ya nyenyezi mozungulira Polaris, zomwe zimapangitsa kuti pakhale mizere yolimba komanso yopingasa, kupewa kuwoneka "kochepa" kwa zithunzi za njira ya nyenyezi yopingasa.

Mwachidule, magalasi a telephoto si chisankho chabwino kwambiri cha astrophotography ndipo ali ndi zofooka zazikulu pankhaniyi; chifukwa chake, kusamala ndikofunikira posankha. Pa astrophotography, magalasi a telephoto ndi oyenera kwambiri kujambula mitundu inayake ya zinthu zakuthambo, monga zinthu zakuthambo ndi madera ena a thambo lausiku.

Maganizo Omaliza:

Pogwira ntchito ndi akatswiri ku ChuangAn, mapangidwe ndi kupanga zonse zimayendetsedwa ndi mainjiniya aluso kwambiri. Monga gawo la njira yogulira, woimira kampani akhoza kufotokoza mwatsatanetsatane zambiri zokhudza mtundu wa lenzi yomwe mukufuna kugula. Mndandanda wa zinthu za lenzi za ChuangAn zimagwiritsidwa ntchito m'njira zosiyanasiyana, kuyambira kuyang'anira, kusanthula, ma drone, magalimoto mpaka nyumba zanzeru, ndi zina zotero. ChuangAn ili ndi mitundu yosiyanasiyana ya lenzi yomalizidwa, yomwe ingasinthidwenso kapena kusinthidwa malinga ndi zosowa zanu. Lumikizanani nafe mwachangu momwe mungathere.