Tengani luso lanu la kujambula kupita ku mlingo wotsatira
Malinga ndi ma lens aakulu, chinthu chofunika kwambiri kuti chiyang'ane ndi kutalika kwake, komwe kumawonetsedwa mmilimita. Makwinya ambiri amatchulidwa kuti ali ndi kutalika kwa mamita 35 kapena kuposera, ndipo mwina akhoza kukhala opambana kapena osungira majekensi. Koma musanachepetse kutalika kwa kutalika komwe mukufuna, muyenera kutsimikiza kuti ikugwirizana ndi kamera yanu, yomwe ingakhale yosagwirizana ndi lenti iliyonse. Mukangoyang'anitsitsa izo, mungayambe kuganizira zoonjezera, monga choyambirira kapena zojambula, mtundu wa autofocus ndi zoyika. M'munsimu, tapanga mndandanda wa makina opambana kwambiri a Canon , Nikon ndi makamera ena.
Kugwiritsira ntchito zamatsenga kokongola kwambiri komanso kotsika pang'ono, Canon EF 16-35mm f / 4L ISSM Lens ili ndi mwayi waukulu kwa eni ake a Canon DSLR. Kuphatikizidwa ndi Kujambula kwa Maonekedwe a Optical, zokutirapo zapadera kuti kuchepetsako mpweya ndi zinthu ziwiri za UD kuti kuchepetsa kuwonongeka kwa fano, Canon imawonjezera kuika mkati ndikupempha USM kuti imvetsetse molondola komanso mwamsanga. Kuwongolera nthawi yowonjezera kumapezekanso kumakhala ndi mtunda wocheperapo wa mamita 0,92 kupyola zojambula zonse zazitsulo.
Zomwe zimapangidwira nyengo zonse, kondomu ya Canon iyi ndi fumbi komanso yosagonjetsedwa, yomwe imathandiza kuti izi zichitike nthawi zonse. Pambuyo pa chitetezo ku zinthu, mzere wozungulira wa kondomu ya Canon ndi masamba ake asanu ndi anayi amalola kujambula zithunzi zokongoletsa.
Maphunziro amayamikira zotsatira zake ndi zotsatira zazithunzi ngakhale ngakhale kuwala koipa kwambiri ndi zochitika za chithunzi. Pa makilogalamu 1.4 okha, kansalu ya Canon EF 16-35mm idzakhala yatsopano kwa enieni a Canon DSLR akuyang'ana pazithunzi zambiri.
Kupita-kukasankha kwa anthu ambiri a Canon DSLR, EF S 10-22m f / 3.5-4.5 ali ndi kapangidwe ka zithunzi ndi kukwanitsa zomwe zimapangitsa kuti zisokonezeke kwambiri pa lens tsiku ndi tsiku. Kuphatikizidwa ndi stabilizer optical image, autofocus yodalirika komanso nthawi yowongoka yowongoka ndi mphete yowonjezera kumaphatikizapo mafuta pamoto umene Khwangoni iyi imayenera kukhala nayo.
Ndili ndi mtunda wokwanira wa masentimita 9,5 wokhazikika kwambiri, nkhani zokwana 3.6 x 5.4 mainchesi zingathe kudzaza chimango. Kukula kwake kumakhala ndi lens ili lolemera mapaundi 0,85, lomwe limapangitsa kuti likhale loposa kuwala kokwanira kunyamula m'thumba. Zingwe zapamwamba kuchokera kutalika kwa mandala ameneŵa zimakondweretsa ngakhale ojambula ojambula mofanana ndi zojambula 16-35mm. Zinthu zitatu za aspherical lens, Super-UD mfundo ndi ring-type USM zonse zimatsimikizira mantha photo chithunzi.
Ngakhale kuti palibe chithunzi chokhazikika chomwe chimamangidwa, chojambulidwa chonchi chiyenera kuthandizira kusunga chida ichi m'manja mwako pamene mukugwira zizindikiro za ukwati, zochitika zamasewera kapena zojambula zowonongeka.
Lenti yabwino ndi yovuta kupeza pa mtengo wotsika mtengo, ndipo ngati mutakwanitsa kupeza imodzi, mukufuna kuonetsetsa kuti simukugulitsa zinthu zomwe zidzatha mu miyezi ingapo chabe. Ndicho chifukwa chake, pamene mukukamba za "bajeti" lens, mukukamba za mtengo wamtengo wapatali pafupifupi $ 150 mpaka $ 200. Pakati pa makina amenewa, Nikon AF-S DX NIKKOR 35mm f / 1.8G lens mwina ndi yabwino bajeti-angle-ang'onoting'ono mukhoza kupeza Nikon makamera. Ili ndi kutalika kwa kutalika kwake kwa 35mm, zomwe zimagwirizana kwambiri ndi diso la umunthu. Izi zikutanthawuza kuti zithunzi zidzasonyeza kuti zili pafupi kwambiri ndi zomwe mumaganizira-ndiko kuti, ndithudi, ngati mukudziwa zomwe mukuchita. Lens ili ndipamwamba kwambiri pa f / 1.8 ndi osachepera f / 22. Pali ultrasonic autofocus (AF) motor ndi nthawi zonse malangizo patsogolo. Ndipo chinthu chonsecho chikhoza kupezeka pansi pa $ 200.
Pogwiritsa ntchito njira zabwino kwambiri zowonongeka, masiku ano Sigma 8-16mm f / 4.5-5.6 DC HSM FLD AF ndi yabwino kwambiri kwa Canon, Nikon, Pentax ndi Sony DSLR. Lens ya mtundu umodzi, Sigma ndiyo yoyamba yopereka kutalika kwa kutalika kwa 8mm basi. Zokonzedwa ndi masensa a zithunzi APS-C m'maganizo, lens ili ndi malo ofanana ndi ma lenti 12-24mm.
Kuphatikiza magetsi atsopano a glass of FLD, lens imathandizira kubwezeretsa mitundu ndi kukonzekeretsa mitundu pamene akupanga zotsatira zabwino kwambiri muzithunzi zonsezi. Kuphatikizidwa kwa teknoloji ya HSM kumapangitsa kuti zojambula za autofocus zikhale zomangirira komanso zolemba ndizitali zokhala ndi mapaundi 9.4 okha kuchokera pa phunziro.
Pomalizira pake, Sigma yakhala ikupanga lens yomwe imakhala yabwino kwambiri pa malo akuwombera, kulanda zomangamanga, kumanga nyumba, kujambula zithunzi, kukonda ukwati ndi zina zambiri. Mphamvu ya 1.22-pounds ndi 4.17 mainchesi imapangitsa kuti ikhale yogwirizana komanso yotsekemera, choncho imagwirizana bwino ndi thumba lakwanira, kapepala kapena thumba la kamera.
Ngati mukufuna kuti mutenge kukula kwapamwamba kwa Grand Canyon kapena zina zotchuka vista, mwinamwake mukufuna makina amphamvu kwambiri, omwe amadziwika ngati lenti iliyonse yokhala ndi yayitali kwambiri kuposa 15 mm. Kwa oponya Nikon, pali Sigma 10-20mm f / 3.5 EX DC HSM. Malo okongola ndi ofunika kwambiri amachititsa kuti zikhale zabwino kwa malo ndi zomangamanga, koma zingakhalenso zoyenera kwa akatswiri akuwombera zithunzi. Ili ndi motokera ya hyper-sonic ya autofocus yamtendere komanso yochuluka kwambiri, komanso chimbudzi cha mtundu wa petal chomwe chimatsegula kuwala kwina ndipo chimachepetsa kuganizira mkati. Ndizitsulo zamkati zamkati zozungulira, koma chitukuko chakumbuyo kwa zipangizozi ndikutsimikizira ngakhale ojambula okongola kwambiri. Palinso mawonekedwe a Canon, Pentax ndi Sony DSLRs. Zingakhale zosapindulitsa bwino, zowononga zolinga zonse, koma ndithudi ndizosankhika bwino zowonongeka kwa magalasi.
Njira ina yowonetsera bajeti ya opanga mahatchi a Canon, EF-S 24mm f / 2.8 STM ndi yosagwirizana kwambiri ndi gulu laling'ono. Ili ndi kutalika kwa 24 mm ndi malo otsika kwambiri a f / 2.8. Ndilo lens laling'ono kwambiri komanso lopepuka kwambiri muzitsulo za EF-S zamakono a Canon. Komanso imakhala ndi nthawi yowonjezera yowunikira panthawi yomwe ikupezeka mu One Shot AF (autofocus). Amapanga mafano otentha ndi autofocus mwamsanga, ndipo ndi ochepa mokwanira kuti agwirizane ndi thumba lililonse. Mtengo ndi wakuti simukusowa kudandaula kwambiri chifukwa chodandaula kugula, makamaka ngati muli wojambula zithunzi wokhutira ndi makina ochuluka. Taganizirani izi molimba mtima ngati ndinu wothamanga wa kanon akuyang'ana kuti mugule lens yanu yoyamba, koma simukufuna kugwiritsa ntchito ndalama zambiri.
Sigma inakonzanso kalembedwe kake kakang'ono ka Marko Wachiwiri yopanga zojambulazo ndi kope latsopano la Art. Maseŵera othamanga otsika kwambiri ndi magalasi ambiri omwe amachepetsa kupotoza ndipo amachititsa kusiyana kwambiri. Misolo imakhalanso yowonjezereka, ndi zokutira zamadzimadzi ndi zinthu zam'mbuyo ndi zam'mbuyo komanso chisindikizo cha nyengo.
Kusintha kwakukulu kwakukulu kumasintha malo kuchokera ku af / 4-5.6 mlingo wosinthika mpaka nthawi zonse f / 4, yomwe, pamodzi ndi njira yowongoka bwino, imapanga mpikisano wodabwitsa. Popeza kuti ili ndi f / 4 kutulukira pazithunzi zonse, ndizowonjezera bwino kuposa zomwe zimapereka ojambula mofulumizitsa kuthamanga komwe kuli koyenera kuwonetsera zachilengedwe ndi mzinda. Lens ili ndi kukula kwa 4.9x, ndi Hyper-Sonic Motor luso lamakono lololeza kuti azikhala chete ndi mofulumira autofocus ngakhale pamene akujambula zithunzi patali.