{"id":5617,"date":"2016-04-28T14:45:53","date_gmt":"2016-04-28T12:45:53","guid":{"rendered":"https:\/\/www.fotolab.cz\/blog\/?p=5617"},"modified":"2019-01-30T11:56:55","modified_gmt":"2019-01-30T10:56:55","slug":"osobni-zkusenost-s-objektivem-sigma-18-35mm-f1-8-art","status":"publish","type":"post","link":"https:\/\/www.fotolab.cz\/blog\/osobni-zkusenost-s-objektivem-sigma-18-35mm-f1-8-art\/","title":{"rendered":"Sigma 18-35mm f\/1.8 ART: U\u017dIVATELSK\u00c1 RECENZE"},"content":{"rendered":"

Mnoho z\u00e1kazn\u00edk\u016f si objektiv Sigma 18-35mm f\/1.8. DC HSM ART<\/strong> z\u00edskal svou univerz\u00e1lnost\u00ed a sv\u011btelnost\u00ed.<\/strong> Jeden z na\u0161ich z\u00e1kazn\u00edk\u016f\u00a0se se sv\u00fdmi dojmy pod\u011blil v kr\u00e1tk\u00e9\u00a0recenzi.
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Objektiv Sigma 18-35\/1.8 DC HSM ART<\/strong><\/a>\u00a0nab\u00edz\u00ed modern\u00ed desing v kombinaci hodnotn\u00fdmi materi\u00e1ly a novou optickou konstrukc\u00ed.
\nSkl\u00e1d\u00e1 se z 17 optick\u00fdch element\u016f ve 12 skupin\u00e1ch<\/strong> s asf\u00e9rick\u00fdm a SLD sklem<\/strong>.
\nNab\u00edz\u00ed skv\u011blou\u00a0sv\u011btelnost f\/1.8<\/strong> co\u017e je v\u011bc, kter\u00e1, zejm\u00e9na u zoomu, mus\u00ed zaujmout ka\u017ed\u00e9ho fotografa<\/strong>.<\/p>\n

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Objektiv\u00a0ji\u017e n\u011bjakou dobu vyu\u017e\u00edv\u00e1m snad ke v\u0161em sv\u00fdm fotografick\u00fdm aktivit\u00e1m.
\nHledal jsem univerz\u00e1ln\u00ed zoom s co nejlep\u0161\u00ed sv\u011btelnost\u00ed,<\/strong> kter\u00fd bych mohl pou\u017e\u00edvat jak v interi\u00e9ru, tak v exteri\u00e9rech nap\u0159\u00edklad pro krajin\u00e1\u0159skou fotografii<\/strong> a portr\u00e9ty<\/strong>.<\/span><\/p>\n

\"sigma_1835_f18_2_z2\"<\/a>M\u00fdm hlavn\u00edm oborem, na kter\u00fd jsem zam\u011b\u0159en je dokument\u00e1rn\u00ed fotografie<\/strong> a zpo\u010d\u00e1tku jsem objektiv vyu\u017e\u00edval jako z\u00e1kladn\u00ed sklo<\/strong>\u00a0pro focen\u00ed<\/strong> svateb, ples\u016f a p\u0159i r\u016fzn\u00fdch\u00a0rodinn\u00fdch akc\u00edch.\u00a0Zde nejv\u00edce oce\u0148uji tu nejunik\u00e1tn\u011bj\u0161\u00ed vlastnost tohoto objektivu<\/strong>, kterou je sv\u011btelnost f\/1.8<\/strong> v cel\u00e9m rozsahu zoomu<\/strong>.<\/span><\/p>\n

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Pr\u00e1v\u011b skv\u011bl\u00e1 sv\u011btelnost mi zaji\u0161\u0165uje pohodlnou pr\u00e1ci v hor\u0161\u00edch sv\u011bteln\u00fdch podm\u00ednk\u00e1ch<\/strong> – s n\u00edzkou clonou si mohu dovolit fotit i tam, kde bych jinak musel pou\u017e\u00edt blesk.<\/em><\/span><\/p><\/blockquote>\n

D\u00edky rozsahu zoomu, kter\u00fd je po p\u0159epo\u010dtu na kinofilm cca 27-53mm (29-56mm u zrcadlovek Canon) mi dok\u00e1\u017ee nahradit mi hned 3 pevn\u00e1 skla – \u0161iroko\u00fahl\u00e9, st\u0159edn\u00ed a na DX form\u00e1tu i portr\u00e9tn\u00ed ohnisko lehce nad 50mm po p\u0159epo\u010dtu<\/strong>.<\/p>\n

B\u011bhem r\u016fzn\u00fdch situac\u00ed v ter\u00e9nu i p\u0159i rodinn\u00e9m focen\u00ed s d\u011btmi mi dovoluje tento rozsah dokumentovat celek<\/strong> a z\u00e1rove\u0148 b\u011bhem okam\u017eiku vyfotografovat i\u00a0detail, nebo portr\u00e9t.<\/strong><\/p>\n

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Focen\u00ed v hor\u0161\u00edch sv\u011bteln\u00fdch podm\u00ednk\u00e1ch je pro mne jen jedna z v\u00fdhod\u00a0 nejni\u017e\u0161\u00ed clony f\/1.8<\/strong>. M\u00e1m toti\u017e r\u00e1d i kontrolu nad hloubkou ostrosti<\/strong> a l\u00edb\u00ed se mi, kdy\u017e fotografovan\u00fd objekt nebo osoba vynik\u00e1 p\u0159ed p\u0159ed rozost\u0159en\u00fdm pozad\u00edm. Sigma tuto vlastnost nab\u00edz\u00ed po cel\u00e9 d\u00e9lce zoomu pr\u00e1v\u011b d\u00edky vysok\u00e9 sv\u011btelnosti<\/strong>.<\/span><\/p>\n

N\u00e1vic m\u00e1 i velmi hezk\u00fd charakter a kresbu v rozost\u0159en\u00e9 \u010d\u00e1sti obrazu<\/strong> tzv. bokeh.<\/strong> <\/span><\/p>\n

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Bav\u00ed m\u011b i pom\u011brn\u011b kr\u00e1tk\u00e1 zaost\u0159ovac\u00ed vzd\u00e1lenost objektivu<\/strong>, kterou oce\u0148uji pro detailn\u00ed z\u00e1b\u011bry.<\/span><\/em><\/p><\/blockquote>\n

U dokumentu to dok\u00e1\u017ee „vyp\u00edchnout“ hlavn\u00ed motiv \u010di d\u011bj<\/strong> a u portr\u00e9tu dok\u00e1\u017ee zajistit velmi l\u00edbiv\u00fd a ni\u010d\u00edm (t\u0159eba pozad\u00edm) neru\u0161en\u00fd pohled do o\u010d\u00ed fotografovan\u00e9 osoby. <\/span><\/p>\n

Co mne je\u0161t\u011b mile p\u0159ekvapilo? Schopnost objektivu vypo\u0159\u00e1dat se s focen\u00edm v protisv\u011btle,<\/strong> autentick\u00e9 zobrazeni barev a p\u0159enos kontrastu. I p\u0159es to, \u017ee se jedn\u00e1 o tak sv\u011bteln\u00fd zoom, dok\u00e1\u017ee nab\u00eddnout velmi kvalitn\u00ed kresbu a ostrost<\/strong> pro krajinu i portr\u00e9t.<\/span><\/p>\n

I kdy\u017e n\u011bkter\u00fdm fotograf\u016fm se zd\u00e1 objektiv trochu t\u011b\u017e\u0161\u00ed a v\u011bt\u0161\u00ed ne\u017e by cht\u011bli, j\u00e1 pova\u017euji solidn\u00ed konstrukci <\/strong>cel\u00e9 \u0159ady Sigma ART <\/strong>sp\u00ed\u0161e za v\u00fdhodu – nap\u0159\u00edklad pro pevn\u00e9 a stabiln\u00ed dr\u017een\u00ed.
\nHned na prvn\u00ed pohled se jedn\u00e1 o odoln\u00e9 sklo<\/strong>, kter\u00e9 vydr\u017e\u00ed i m\u00e9n\u011b \u0161etrn\u00e9 zach\u00e1zen\u00ed<\/strong>. p\u0159\u00edjde mi tedy \u0161koda, \u017ee krom\u011b mechanick\u00e9 odolnosti<\/strong> nen\u00ed objektiv vybaven t\u011bsn\u011bn\u00edmi pro zv\u00fd\u0161en\u00ed odolnosti co se t\u00fd\u010de vlhkosti a odolnosti klimatick\u00fdm podm\u00ednk\u00e1m.<\/p>\n

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Sigma 18-35\/1.8 DC HSM ART<\/h2>\n\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t
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Optick\u00e1 kvalita<\/h3>\n\t\t\t\t<\/span>\n\t\t\t\t9.0\/10<\/span>\n\t\t\t<\/div>\n\t\t\t