Chii chinonzi fixed focus lens?

Sezvinoratidzwa nezita racho, afixed focus lensimhando ye lens yekutora mifananidzo ine yakagadziriswa yakatarisa kureba, iyo isingagone kugadziriswa uye inoenderana ne zoom lens.

Zvichienderana, malenzi anotarisisa anowanzo kuve neaperture yakakura uye yepamusoro yemhando yepamusoro, achiaita akakodzera kutora mifananidzo yemhando yepamusoro.

Musiyano uripo pakati peakamisikidzwa ekutarisa lenzi uye zoom lenzi

Fixed yekutarisa lens uye zoom lens ndiwo maviri akajairwa mhando dzekamera lenzi, uye mutsauko wavo mukuru uri pakuti kureba kwekutarisa kunogadziriswa. Ivo vane mabhenefiti avo kana akashandiswa mune akasiyana mashandisirwo mamiriro.

Semuyenzaniso, lenzi yakagadzika yakanakira kushandiswa mumamiriro ekuvhenekesa kwakakwana, kutsvaga mhando yemufananidzo wepamusoro, uye matema ekupfura akadzikama, nepo zoom lens inonyatso kuenderana nezviitiko zvinoda flexible zoom, senge mitambo yemifananidzo.

The fixed focus lens

Urefu hwekutarisa

Iyo yakatarisa kureba kweiyo yakagadziriswa yekutarisa lens yakagadziriswa, senge 50mm, 85mm, nezvimwewo, uye haigone kugadziriswa. Iyo zoom lens inogona kugadzirisa kureba kwekutenderera nekutenderedza kana kusunda uye kudhonza lens dhiramu, ichibvumira sarudzo inoshanduka pakati pehupamhi-kona uye telephoto.

Optical performance

Kazhinji, afixed focus lensine zvirinani optical quality pane zoom lens nekuti dhizaini yaro iri nyore uye haidi kutariswa kwekufamba kwelens kana maumbirwo akaomarara. Zvichienderana, malenzi anotarisisa anowanzo kuve neaperture yekumusoro (ine diki F-value), iyo inogona kupa mhando yemufananidzo iri nani, mwenje wakakura wekubuda, uye zvirinani kudzima mhedzisiro.

Asi ikozvino nekuvandudza tekinoroji, mamwe epamusoro-ekupedzisira zoom lenses anogona zvakare kusvika padanho reyakagadzika yekutarisa lenzi maererano nekuita kwemaziso.

Huremu uye huwandu

Chimiro cheiyo yakagadziriswa lens yekutarisa iri nyore, kazhinji idiki uye yakareruka muhukuru. Chimiro che zoom lens chakaomesesa, chinosanganisira akawanda lenzi, saka kazhinji inorema uye yakakura, izvo zvingave zvisiri nyore kuti vatori vemifananidzo vashandise.

Kupfura nzira

Fixed focus lenses akakodzera kupfura chaiwo mapikicha kana zvidzidzo, sezvo kureba kwekutarisa hakugone kugadziridzwa, uye akakodzera lenzi anofanirwa kusarudzwa zvichienderana nedaro rekupfura.

Iyo zoom lens inoshanduka uye inogona kugadzirisa kureba kwekutarisa zvinoenderana nezvinodiwa zvekupfura pasina kushandura nzvimbo yekupfura. Inokodzera zvimiro zvinoda shanduko inochinjika mukupfura kureba uye kona.