{"id":1542,"date":"2014-06-17T01:15:01","date_gmt":"2014-06-17T01:15:01","guid":{"rendered":"http:\/\/elg.is\/?p=1542"},"modified":"2019-05-01T22:32:37","modified_gmt":"2019-05-01T22:32:37","slug":"i-heimi-hins-smaa","status":"publish","type":"post","link":"https:\/\/elg.is\/?p=1542","title":{"rendered":"\u00cd heimi hins sm\u00e1a"},"content":{"rendered":"

Ef \u00feig hefur langa\u00f0 til a\u00f0 pr\u00f3fa macro-lj\u00f3smyndun<\/a> en h\u00e9lst a\u00f0 \u00fe\u00fa \u00feyrftir r\u00e1nd\u00fdra, s\u00e9rstaka macro-linsu til \u00feess \u2013 \u00fe\u00e1 er \u00e9g me\u00f0 g\u00f3\u00f0ar fr\u00e9ttir fyrir \u00feig.<\/p>\n

Gleymdu macro-linsunni. \u00de\u00fa \u00fearft hana ekki.<\/p>\n

\u00c1 \u00f3d\u00fdran og einfaldan h\u00e1tt getur \u00fe\u00fa breytt venjulegri linsu \u00ed \u00f6fluga macro-linsu. \u00dea\u00f0 er gert me\u00f0 7-10 dollara vi\u00f0b\u00f3tar-r\u00f6ri e\u00f0a extension tube, sem h\u00e6gt er a\u00f0 kaupa t.d \u00e1 Ebay<\/a> e\u00f0a Aliexpress.  Og viljir \u00fe\u00fa vera me\u00f0 enn \u00f6flugri macro linsu getur\u00f0u sn\u00fai\u00f0 henni vi\u00f0 me\u00f0 s\u00e9rst\u00f6kum hring (reverse ring)<\/a> til a\u00f0 skr\u00fafa hana fasta \u2013 sums\u00e9 \u00d6FUGA. \u00dear me\u00f0 ertu kominn \u00ed heim hins sm\u00e1a \u00ed tilverunni.<\/p>\n

Extension r\u00f6ri\u00f0 er sett \u00e1 milli myndav\u00e9larinnar og linsunnar og l\u00edkir \u00feannig eftir macro-linsu. M\u00f6gnunin \u00ed linsunni f\u00e6st semsagt me\u00f0 \u00fev\u00ed a\u00f0 f\u00e6ra hana fj\u00e6r myndav\u00e9linni. \u00dea\u00f0 \u00fe\u00fd\u00f0ir a\u00f0 \u00fe\u00fa kemst miklu n\u00e6r myndefninu me\u00f0 linsuna. Vi\u00f0 \u00feetta missir h\u00fan samband vi\u00f0 myndav\u00e9lina og \u00fev\u00ed \u00feurfa allar stillingar a\u00f0 vera manual.  \u00c1\u00f0ur en linsan er sett \u00e1 r\u00f6ri\u00f0 \u00fearf me\u00f0 myndav\u00e9linni a\u00f0 stilla lj\u00f3sopi\u00f0 sem \u00fe\u00fa \u00e6tlar a\u00f0 nota. Ef \u00fe\u00fa \u00e1tt hins vegar linsu me\u00f0 stillihring fyrir lj\u00f3sopi\u00f0 \u00fe\u00e1 ertu \u00ed enn betri m\u00e1lum.<\/p>\n

Einnig er h\u00e6gt a\u00f0 f\u00e1 extension r\u00f6r me\u00f0 rafsnertlum til a\u00f0 halda sambandinu \u00e1 milli v\u00e9lar og linsu en \u00fea\u00f0 kostar a\u00f0 sj\u00e1lfs\u00f6g\u00f0u eitthva\u00f0 meira. En eins og \u00fe\u00fa veist a\u00f0 \u00fe\u00e1 er rosalega gaman a\u00f0 gera allt manual \u2013 \u00fea\u00f0 er meira alv\u00f6ru.<\/p>\n

\"Me\u00f0<\/a>
Me\u00f0 15-85mm linsunni kemst \u00e9g ekki n\u00e6r bl\u00f3minu en \u00feetta. Linsan n\u00e6r ekki f\u00f3kus reyni \u00e9g a\u00f0 fara n\u00e6r. Taki\u00f0 eftir bl\u00f3mknappinum \u00ed mi\u00f0junni.<\/strong><\/em><\/figcaption><\/figure>\n
\"\"<\/a>
Me\u00f0 extension r\u00f6ri og \u00f6fugri linsu kemst \u00e9g hins vegar alveg ofan \u00ed bl\u00f3mi\u00f0 me\u00f0 linsuna. H\u00e9r er bl\u00f3mknappurinn \u00ed n\u00e6rmynd.<\/strong><\/em><\/figcaption><\/figure>\n

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Gr\u00ed\u00f0arlega \u00fer\u00f6ngt f\u00f3kussvi\u00f0 gerir macro-lj\u00f3smyndun \u00e1kaflega krefjandi. Besta a\u00f0fer\u00f0in er a\u00f0 stilla f\u00f3kusinn manual og hreyfa s\u00ed\u00f0an linsuna \u00f6rl\u00edti\u00f0 fram og til baka uns ma\u00f0ur s\u00e9r hvar f\u00f3kusinn er. \u00dear sem f\u00f3kussvi\u00f0i\u00f0 er svona \u00fer\u00f6ngt og m\u00f6gnunin mikil hefur minnsta hreyfing \u00e1 linsunni gr\u00ed\u00f0armikil \u00e1hrif. Til d\u00e6mis getur veri\u00f0 mj\u00f6g sn\u00fai\u00f0 a\u00f0 lj\u00f3smynda bl\u00f3m sem fl\u00f6ktir \u00f6rl\u00edti\u00f0 \u00ed vindinum. Macro lj\u00f3smyndum krefst \u00fev\u00ed mikillar \u00feolinm\u00e6\u00f0i og m\u00f6rg skot fara forg\u00f6r\u00f0um. H\u00e9r er \u00fea\u00f0 \u00e6fingin sem skapar meistarann. Me\u00f0 \u00e6fingunni og reynslunni l\u00e6rir ma\u00f0ur hvernig best er a\u00f0 bera sig a\u00f0.<\/p>\n

Sem fyrr segir er f\u00f3kussvi\u00f0i\u00f0 mj\u00f6g \u00fer\u00f6ngt en ef ma\u00f0ur vill f\u00e1 meira af myndinni \u00ed f\u00f3kus er h\u00e6gt a\u00f0 notast vi\u00f0 t\u00e6kni sem kallast focus stacking<\/a>.  H\u00fan byggist \u00e1 \u00fev\u00ed a\u00f0 myndvinnsluforrit er l\u00e1ti\u00f0 ra\u00f0a saman \u00ed eina mynd nokkrum myndum sem hafa veri\u00f0 teknar me\u00f0 \u00feeim h\u00e6tti a\u00f0 f\u00f3kusfjarl\u00e6g\u00f0inni er breytt \u00e1 milli ramma.<\/p>\n

N\u00fa er t\u00edmi sumarbl\u00f3ma og skord\u00fdra sem eru skemmtileg macro-myndefni. Endilega pr\u00f3fa\u00f0u \u00feig \u00e1fram. Til a\u00f0 koma \u00fe\u00e9r af sta\u00f0 eru h\u00e9r a\u00f0 ne\u00f0an nokkur mj\u00f6g gagnleg fr\u00e6\u00f0slumyndb\u00f6nd sem \u00e9g m\u00e6li me\u00f0 en vissulega er h\u00e6gt a\u00f0 finna meira efni \u00e1 Youtube ef \u00fe\u00fa vilt fr\u00e6\u00f0ast meira.<\/p>\n

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Fr\u00e1b\u00e6r fyrirlestur me\u00f0 Tim Cooper:<\/strong><\/em><\/p>\n

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