ISO12233 ƙuduri katin, ISO12233 ƙuduri katin (0.5x, 1x, 2x, 4x, 8x) 2000 layi

ISO12233 ƙuduri katin (0.5x, 1x, 2x, 4x, 8x), gwajin haske tushen, gwajin software, samar da cikakken jerin daya-tsayawa sana'a sabis.

Amfani

Katin ƙuduri (katin ƙuduri) shine misali na misali wanda zai iya samar da gwaje-gwaje masu taimako kamar ƙudurin tsaye da ƙudurin kwance na ainihin hoto.

Gwajin ƙuduri yana amfani da katin ƙuduri na ISO12233 na ƙasa da ƙasa don gwajin, ɗaukar kusurwar ɗaukar hoto da yanayin ɗaukar hoto.

An yi lissafin ƙuduri ta amfani da software na HYRes, wanda aka raba sassa biyu na ƙuduri na tsaye da ƙuduri na kwance.

Binciken kyamarorin dijital ya bambanta da sauran kayayyakin, ba kamar kwamfutar tafi-da-gidanka ba, DIY, da sauransu, akwai software mai yawa don gwada bayanai masu ma'ana da za su iya bayyana komai daga bayanai. Baya ga buƙatar samun wasu bayanai masu mahimmanci, ƙididdigar ingancin kyamarar dijital yana buƙatar haɗuwa da ainihin ayyukan amfani da ɗaukar hoto don ƙididdiga. Saboda haka, bitanmu yana da ƙa'idodin bayanai masu ma'ana da haɗuwa da nazarin da ƙwararrun masu bita suka yi don samun sakamakon da ya fi dacewa.

Katin gwajin ƙuduri na ISO12233 ya bi ka'idodin 12233 "Photography-Electronic Photography-Measurement Method". A cikin wannan yankin aiki na girman 1 X, an auna tsawo na 20 cm tare da kuskuren kusan 0.1 mm kawai. Yana da halaye da kusan yawancin katin ƙuduri ke da su.

Standard bayanai

ISO12233 ƙuduri gwajin katin

0,5X (10x17.8 cm), semimatt (bambancin ƙa'idodi), hoto a kan takarda mai daukar hoto

0.5 sau rabin mute (daidaitaccen bambanci) HD hoto takarda

Samfurin NO. : NQ-10-50A

1X (20x35.6 cm), semimatt (bambancin ƙa'idodi), hoto a kan takarda mai daukar hoto

1x rabin mute (misali bambanci) HD hoto takarda

Samfurin NO. : NQ-10-100A

2X (40x71.1 cm), semimatt (bambancin ƙa'idodi), hoto a kan takarda mai daukar hoto

2x rabin mute (daidaitaccen bambanci) HD hoto takarda

Samfurin NO. : NQ-10-200A

4X (80x142.2 cm), semimatt (bambancin ƙa'idodi), hoto a kan takarda mai daukar hoto

4x rabin mute (daidaitaccen bambanci) HD hoto takarda

Samfurin NO. : NQ-10-400A

8X (160x284.4 cm), semimatt (bambancin ƙa'idodi), hoto a kan takarda mai daukar hoto

4x rabin mute (daidaitaccen bambanci) HD hoto takarda

Terms da ma'anar

1, ƙuduri: ban da saws, za a iya gane iyakokin m samfurin. Yana nunawa ta hanyar adadin sanduna a kowane ɗakin tsayi.

2, Serrated: Lokacin da samfurin mitar kasa da sau biyu na mafi girman mitar siginar hoto, a kusa da high harmonic na samfurin mitar zai samar da amo tare da wave overlapping.

Shooting yanayi

Hasken haske: Hasken haske yana amfani da hasken rana (ƙa'idodin ƙa'idodi) ko hasken waya na tungsten bisa ga ƙa'idodin ISO7589. Yi isasshen haske a kan taswirar don tabbatar da cewa kyamarar tana fitar da siginar. A lokacin haske, tabbatar da bambancin haske a kowane ɓangare na taswirar da tsakiyar yanki yana cikin kewayon +-10%. Ka lura kada ka bar hasken tushen haske ya shiga kamara kai tsaye. Ka sanya abubuwa da ke da ƙananan radiation a kusa da tsarin don rage tasirin hasken da ke nunawa.

2, ganin tsari: lokacin da aka sanya zane-zane ya sa ya yi daidai da mai mayar da hankali na kyamara, kuma ya sa kwance-kwance ya yi daidai da kwance-kwance na kwance-kwance. Dangane da ƙa'idodin 12233, a lokacin da aka harba, bari ingantaccen tsayi na zane-zane (tsayi na ciki na ciki lokacin da aka duba zane-zane 4.1) ya cika allon daidai. A zahiri, akwai wasu wahala a harba kamar yadda aka buƙata, don haka kuma za a iya harba ɗan ƙarami. A wannan lokacin, za a raba da "adadin pixels a tsaye na dukan allon / adadin pixels a kowane ingantaccen tsayi a cikin zane-zane".

Ka'idar saitin yanayin kyamara: Lokacin auna ƙuduri bisa ga wannan ka'idar, ka'idar sigogin kyamara a zahiri tana amfani da saitin lokacin masana'antu. Dole ne a nuna saitunan da aka yi amfani da su wajen saitunan masana'antu don aunawa. Idan akwai sigogi da ba za a iya ƙayyade su ba bisa ga saitunan masana'antu, masana'antun za su yi ƙididdigar gefe bisa ga saitunan da masu amfani da kyamarar suka fi yiwuwa su yi amfani da su, tare da nuna bayanan da za su iya ƙayyade saitunan.

4, bayyanar yanayi saiti Babu musamman saiti

5, mayar da hankali: Babu musamman saiti

6, farin daidaito: dole ne a daidaita farin daidaito na kyamara dangane da tushen haske.

7, zoom matsayi: babu musamman saiti

auna yanayi

1, Binciken da aka yi ta amfani da hoton buga Don rage rarrabuwa na kimantawa, a cikin maki 2 masu zuwa a matsayin ƙididdigar kimantawa.

a) Yana amfani da sararin samaniya mita da ke canzawa (kamar canzawa daga 5 zuwa 4) a cikin ƙuduri na ƙuduri na ƙuduri na ƙuduri na ƙuduri. Ana nuna rukunin ta hanyar adadin sanduna a kowane tsayi.

b) Tabbatar da farawa tracking daga low mita gefe yayin lura, buga mita za a iya saita zuwa wani darajar.

2, yin kimantawa ta hanyar nuna hotuna don rage rarrabuwa na kimantawa, tare da maki 2 a matsayin ma'aunin kimantawa.

a) Yana amfani da sararin samaniya mita da ke canzawa (kamar canzawa daga 5 zuwa -4) a cikin ƙuduri na ƙuduri na ƙuduri na ƙuduri na ƙuduri. Ana nuna rukunin ta hanyar adadin sanduna a kowane tsayi.

b) Tabbatar da farawa tracking daga low mita gefe yayin lura, nuni a lokacin lura da (zoom) girma iya saita zuwa wani darajar.

Tsarin gwajin ƙuduri na shekaru daban-daban

Hanyar MTF na iya tantance ƙwarewar kyamara da ruwan tabarau, me ya sa za a haɓaka hanyoyin gwajin ƙwarewa daban-daban? Wannan tambaya tana da kyau sosai, MTF ka'idar da aka tsara bayan dubun hammer, tabbatar da shi ba tare da kuskure ba! Amma maɓallin shi ne a kan samfurin hoto! Saboda kawai a layin gwajin MTF, shi ne ainihin ƙarƙashin iyakokin fitarwa na'urorin, lokacin da aka ƙaddamar da DSLR har zuwa megapixels, misali: Nikon D2X ko Canon EOS 1Ds MKII, da dai sauransu, ƙudurin hoto ya wuce aikin filim na gargajiya (a baya an ayyana filim na gargajiya na 135 mm kimanin megapixels). A wasu kalmomin, lokacin da ci gaban na'urorin ya fara wucewa iyakokin USAF1951 da ISO12233, gwajin ba shi da ma'ana a zahiri.

Sabbin ka'idoji na SFR Amurka

Sabon kalmar SFR! Amsar mitar sararin samaniya (SFR) ana amfani dashi ne don auna tasirin hoto guda ɗaya yayin da layin mitar sararin samaniya ya ƙaru. A takaice, SFR shine sigar MFT mai sauƙi. Saboda auna MFT yana buƙatar samfurin sinus mai tsada kuma yana buƙatar canza yawan bayanai. Saboda haka, PIMA ya haɓaka wannan SFR mai ƙarancin farashi a matsayin madadin. A zahiri SFR kawai yana buƙatar launi biyu da baƙar fata da fari (kamar yadda aka nuna a cikin hoton hagu a ƙasa) don canza ƙididdigar ƙididdigar ƙididdiga daidai da ƙimar MFT.