Chiedza ndiyo nhamba yekutanga uye isingarambike mumifananidzo yekutora mifananidzo, saka kudzidza kudzidzira, kudzora uye kuitonga ndicho chimwe chezvinhu zvekutanga zvatinofanira kudzidza kuita. Kutenda kuvandudzwa kwenzira dzakaomarara uye dzinowanikwa tinokwanisa kushandisa mwenje toiisa maererano nezvatinoda pasina kushanda nesimba uye apa ndipo panopinda nhamba dzeF.
Ndine chokwadi chekuti wakambozvinzwa kanopfuura kamwe nezvazvo F-inomira kana iwe wakambozvibvunza kuti chii chirevo kana chinongedzo chiripo pakati pehunhu hunhu hunoonekwa mumalensi ekamera yako. Icho chinhu chaicho chiri nyore kwazvo uye icho chinoreva kudzora kana kukanganisa kwechiedza chinoshanda nemuchina wedu. Ndinokurudzira kuti utarise ichi chinyorwa uye vamwe nezvekutora mifananidzo kwatinayo pane yedu blog nekuti ivo vanozokubatsira iwe zvakawanda kuti unzwisise mashandiro ekamera yako uye yayo yemukati system (unogona kushandisa yekutsvaga injini inoonekwa kumusoro kwepamusoro nzvimbo). Chero zvazviri kana iwe uine chero mibvunzo iwe unogona kugara uchindinyorera mhinduro.
Saka… nhamba idzi dzinorevei?
Isu tinoziva kuti diaphragm ndicho chinhu chinotarisira kudzora huwandu hwechiedza hunopinda muchina wedu, iyo yepamusoro yekuvhurika kwayo mwenje, ndipozve chiedza chinokwanisa kukanganisa mukati mekamera yedu uye nekudaro huwandu hweruzivo uye nuances huchafambiswa kuburikidza nemasaisai emwenje. Tinogona kurerutsa kuti iyo F nhamba ndiyo inomiririra kana iyo sisitimu inoshandiswa kuyera iyo nhanho yekuvhurwa kwedhayaphoni yedu.
Chikamu chekutanga cheichi chiitiko ndechekupinda kwechiedza muchigadzirwa, zvisinei zvichienderana nemamiriro esystem yedu, nhanho inotevera ichave ingave yemagetsi sensor kana iyo chaiyo firimu chaiyo. Kana isu tiri kushanda mudhijitari modhi, mwenje unozopimwa uye kuyerwa neiyo sensor, zvisinei kana tikashanda neanalog system (zvakanyanya kushomeka munguva pfupi yapfuura), ruzivo urwu rwunoongororwa neiyo firimu iyo, zvichienderana nehukama hwayo, ichatora ruzivo rwakawanda kana shoma.
Chii chinorehwa neF-Stop nhanho?
Sezvatakambotaura, tinogona kusiyanisa hupamhi hwekuvhura gomba kuburikidza naro rinosefa mwenje (diaphragm yedu). Pane dzakawanda nguva tinoda kudzora iyi nzvimbo uye Kuburikidza nenhamba dzeF isu tinodzora (kana kuti panzvimbo sampuro) huwandu hwechiedza. Kuderedza huwandu hwechiedza nehafu tinofanirwa kuita kuti nzvimbo yacho idzikiswe nehafu uye izvi zvakafanana nekuita nhanho kana kudzikisira nhamba yeF.Izvi zvinoreva kuti tinogona kutevera nzira yekudzosera kumashure, ndiko kuti, kuwedzera hupamhi kana nzvimbo inojekesa mwenje kaviri iyo inonzi izere yekumira yekuwedzera. Tinogona kudzokorora maitiro aya kusvika tasvika pakuvhurwa kwepamusoro kwechinangwa chedu, chinozivikanwa sekumira zero. Ehe, izvi zvine hwaro hwayo uye zvine musoro-zvemasvomhu kufunga shure kwayo, asi ini ndinonzwisisa kuti parizvino hazvidiwi kuvakanganisa nekuti zvinogona kuomesa zvinhu kupfuura zvinodikanwa uye zvisina basa. Izvo zvinongokuyeuchidza iwe kuti kudzikisa nzvimbo yedenderedzwa kana denderedzwa muhafu, tinofanirwa kukamura dhayamita nekwerekwere mudzi we2 = 1.41421356.
Ipapo ini ndinokusiira iwe uine kukosha kweimwe neimwe yenhamba dzeF uye kumira kana nhanho inomiririrwa neumwe neumwe wavo:
mira 0 = f / 1.00000
mira 1 = f / 1.41421
mira 2 = f / 2.00000
mira 3 = f / 2.82842
mira 4 = f / 4.00000
mira 5 = f / 5.65685
mira 6 = f / 8.00000
mira 7 = f / 11.31370
mira 8 = f / 16.00000
mira 9 = f / 22.62741
mira 10 = f / 32.00000
Kazhinji, makamera mazhinji anotipa mukana wekuvhura nekuvhara madhiragi edu achitevera nhanho kana kuburikidza nekusvetuka kwe1 / 3 kana 1/2, izvi zvinoreva kuti vanotibvumidza kugadzirisa mwenje wechiedza unopinda mukati medu nemahombekombe iyo inoenda pakati pehafu nekaviri kana chimwe chinhu chisingasviki hafu mune ino yechipiri kesi shanduko dzinoitika nenzira inononoka uye neyakareruka nuances (nhanho).
Izvo zvakakosha kuti iwe utarise ...
- Idzo F nhamba dziri zviratidzo zvehukuru hwenzvimbo iyo diaphragm yedu inogadzira uye nekudaro inogadzirisa huwandu hwechiedza chinopinda.
- Tinofanira kuziva kuti kana isu tichiona inomiririrwa ine nhamba f nemavara makuru (F) kana madiki (f) isu tiri kutaura nezve dzakasiyana mamiririro masisitimu. Kana tawana nhamba diki F, chiratidzo ichi chinotiyambira kuti mukova wakakura uye nekudaro mwenje mukuru unopinda; Nekudaro, isu patinoona yepamusoro F nhamba, iri kutinyevera kune zvinopesana, uye ndezvekuti izvi zvinoreva nzvimbo hombe saka tiri kushanda nechidiki chechiedza. Semuenzaniso: Kukwidza kumira kuzere kusvika kumusoro F kunocheka huwandu hwechiedza muhafu. Kuderedza kumira kwakazara kune yakaderera F inopeta huwandu hwechiedza.
- Kana yako kamera modhi ikashanda nesystem yakakamurwa kuita 1/3 nhanho, isu tinofanirwa kutora matatu kusvetuka kuti tiwane kuzara kuzere kana nhanho izere. Kana, kune rimwe divi, iwe ukashanda nekusvetuka kwe1 / 2 isu tichafanirwa kutora mbiri kusvetuka kuita nhanho izere.
Inonakidza kwazvo zvakadaro. Pasina kubvunza chinangwa icho chinyorwa chinonongedzera kwachiri, matambudziko akareruka uye mamwe anovandudzwa kupfuura zvinobudirira kushandisa chero chirongwa chehunyanzvi chekugadzirisa mapikicha, sekureba sekunge mufananidzo une resolution yakanaka Kwaziwai! Juan Dal