Bwererani ku Basics Photography: Mukuzama Onani ISO

Bwererani ku Basics Photography: Kuyang'ana Kwakuya pa ISO

M'miyezi ikubwerayi a John J. Pacetti, CPP, AFP, azilemba mndandanda wamaphunziro oyambira kujambula.  Kuti muwapeze onse ingofufuzani "Bwererani ku Zowona”Pabulogu yathu. Iyi ndi nkhani yachitatu mndandandawu. John amakonda kuchezera alendo ku MCP Facebook Gulu Gulu. Onetsetsani kuti mulowe - ndiulere ndipo ali ndi zambiri zambiri.

Munkhani yathu yapitayi ndidakupatsani mwayi wowona mawonekedwe awonekerawa. Nthawi ino tidzapita mozama ndi ISO.

ISO ndikumverera kwa sensa. Chojambuliracho chimasonkhanitsa kuwala. Kuwala kwa sensa ndiko kumapangitsa chithunzi chanu. Kutsika kwa nambala ya ISO kumafunikanso kuwala kwambiri kuti mupange chithunzi, zowala zowala. Kukwera kwa nambala ya ISO kumakhala kochepa kuwala kuti pakhale chithunzi, mawonekedwe akuda.

Kudziwa zomwe ISO ikuwoneka kuti ilipo, malingaliro anga, omwe amamvetsetsa kwambiri magawo atatu a katemera wowonekera. Ngati mukukumana ndi mavuto ndi izi, simuli nokha. Kubwerera mu tsiku la kanema, anthu ambiri amasankha liwiro la kanema 100 kapena 400. Anauzidwa kuti mugwiritse ntchito 100 panja ndi m'nyumba 400. Izi ndizowonadi. Makamera amakono adijito, komabe amatipatsa ma ISO ochulukirapo kuposa kanema yemwe adachitapo kale. Makamera ambiri amtundu wa digito amakupatsirani 100 mpaka 3200 kapena kupitilira apo. Makamera ena atsopano amapita mpaka 102400.

ISO ndiyomwe ndimakhazikitsa koyamba ndikazindikira momwe ndingakhalire. Nazi zitsanzo zochepa.

• Ndikugwira ntchito panja, mwachitsanzo, paki yokhala ndi phwando laukwati kapena gawo lazithunzi, gawo la chinkhoswe kapena gawo labanja, sindikufuna ISO yayikulu. Ndigwiritsa ntchito 100. Nthawi yokha yomwe ndingasankhire 200 ndikadali ngati kwadutsa kwambiri kapena kuli pafupi kulowa komwe ndingafunike kumvekera pang'ono kuti ndithe kuwonekera bwino.
• Tsopano, ngati ndikugwira ntchito mopepuka, mwachitsanzo, tchalitchi chomwe sichimalola kujambula zithunzi, ndisankha ISO ya 800, 1600, yotheka 2500. Ndikufuna kulumikizidwa kwa sensa kuti ndikweze. Kuzindikira kwamphamvu kwa sensa kumandilola kuti ndisunge F-Stop ndi SS yanga pomwe ndikufuna kuti azitha kuwonekera bwino.
• Tinene kuti ndikufuna kugwira ntchito ndi kuwala kwazenera komwe kulipo. Kuwala kwa mawindo kumafalikira (makamaka) kuwala kwa dzuwa. Ndipita ndi 400 mwina 800 ngati kuwalako sikokwanira mokwanira ngati tsiku lamitambo. Apanso, kukhazikitsa F-Stop ndi SS ndikakhala ndi ISO yanga.

Kubwereza pang'ono: Gwiritsani ntchito ISO yotsika m'malo owala kwambiri (100). Pamavuto ochepa, gwiritsani ntchito ISO (400, 800, 1600) yokwera. Mukasankha ISO yanu, mutha kuposa kukhazikitsa SS yanu ndi F-Stop.

Ndikukhulupirira kuti izi zikukupatsani lingaliro labwino momwe ISO imagwirira ntchito komanso momwe mungagwiritsire ntchito ISO kuti mupindule nayo. Maphunziro ndiye fungulo. Mukakhala ndi maphunziro amenewo, palibe chomwe chingalepheretse ntchito yopanga kujambula. Maphunziro samatha, palibe munthu m'modzi yemwe amadziwa zonse.

Nthawi ina tidzayang'ana F-Stop.

John J. Pacetti, CPP, AFP - South Street Studios     www.southstreetstudios.com

Mphunzitsi wa 2013 ku MARS School- Photography 101, The Basics of Photography  www.marsmedia.com

Ngati muli ndi funso, omasuka kulumikizana nane ku [imelo ndiotetezedwa]. Imelo iyi imapita ku foni yanga kotero ndimatha kuyankha mwachangu. Ndidzakhala wokondwa kuthandiza m'njira iliyonse yomwe ndingathere.