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- Halace znamená vytváření nežádoucích světlých kroužků na okraji objektů Chemicka fakulta VS Brno - by Hannah Geiger (X)
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- Bohužel je však při klasickém fázovém kontrastu kvalita obrazu snížena halací. Halace znamená vytváření nežádoucích světlých kroužků na okraji objektů. Tyto světlé kroužky jsou způsobeny velkým fázovým rozdílem. V klasickém fázovém kontrastu vzniká halace tam, kde je fázový rozdíl tak veliký, že dojde k pozitivní interferenci mezi světlem z pozadí a světlem ze vzorku. V takovém případě vzniká nežádoucí jasné světlo, protože odchýlené světlo má větší amplitudu, než světlo přímé.
…… Při pozorování silně lomivých objektů (kvasinek) vzniká tzv. halo efekt, což je jasně zářící rozhraní mezi objektem a okolním prostředím, v němž se ztrácejí skutečné hranice objektů. Druhým nedostatkem fázového kontrastu je to, že silně absorbující zbarvené objekty nemusí být ve fázovém kontrastu vůbec viditelné, proto se zkoumají jen neobarvené vzorky. V některých případech je halo efekt žádoucí, protože při obrazové analýze se snadněji odliší zkoumaný objekt od rušivého prostředí.
Objektivy firmy NIKON mají na jedné ze svých čoček mají nanesený neprůhledný fázový prstenec, na kterém nastává posun fáze světelné vlny, jsou to speciální ADL objektivy snižující vzniku halace.
- clanek VS Brno by Hannah Geiger (X)
- Halace -
Když do obrazového senzoru vstupuje světlo silnější, než je potřeba, hladina rozpoznání obrazového
senzoru je překročena a část obrazu na monitoru se stává bílou a jasnou
- Olympus kamera by Hannah Geiger (X)
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Compare [close] - Romanian
- Photography/Imaging (& Graphic Arts)
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- Zonă luminoasă care încercuiește imaginea fotografică a unui punct strălucitor DEX - by Veronica Lupascu
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- si am vazut un fenomen optic rar - un halo in jurul soarelui! Se formeaza un halo atunci cand refractia razelor luminoase se face pe cristale de gheata si nu pe picaturi de apa, ca in cazul curcubeului. Fara un filtru la aparatul foto, sau macar niste ochelari speciali, nu poti observa decat niste arce ale haloului circular. - Blog by Veronica Lupascu
- Noapte cu Stele. A fost denumită astfel pentru că amintea astronomilor de pictura lui Van Gogh cu acelaşi nume. Este un halo de lumină din jurul unei stele din galaxia noastră. - Stiinta azi by Veronica Lupascu
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Compare [close] - Portuguese
- Photography/Imaging (& Graphic Arts)
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- Trying to remember the photography classes I took years ago, the most familiar term it comes to my mind is 'halo,' which corresponds to the second meaning of halation in the Online Merriam-Webster Dictionary (http://www.merriam-webster.com/dictionary/halation).
ha•la•tion n.
1. A blurring or spreading of light around bright areas on a photographic image.
2. A glow around a bright object on a television screen.
In some cases, instead of 'halo,' it is possible to use 'auréola,' both terms relating to rounded light/ optical effects. The Portuguese definition of 'halo' can be found at Priberam's Dicionário da Língua Portuguesa (http://www.priberam.pt/DLPO/default.aspx?pal=halo):
halo
(latim halos, -o, do grego latim hálos, -o, eira, grão na eira, disco do Sol ou da Lua)
s. m.
1. Círculo luminoso que às vezes se nota em volta do Sol e de alguns planetas devido a certo estado da atmosfera.
2. Círculo que rodeia o mamilo.
3. Fig. Auréola.
4. Brilho
5. Prestígio, glória.
I came across a few options to translate halation as a technical photography term:
1) First, it is possible to keep the original term in English, although most of the occurrences I found of this use actually refer to 'anti-halation' (backing or coating) and not to the word 'halation' alone
2) The Dicionário Editora de Português-Inglês (Porto Editora, 2009) translates halation as 'halação,' but gives no examples and no further explanation (http://www.infopedia.pt/portugues-ingles/hala%C3%A7%C3%A3o )
3) Professor Enio Leite Alves, from Sao Paulo University (Usp), mentions 'halo,' 'ofuscamento,' and 'efeito de neblina luminosa' on his 'Glossário Fotográfico' (http://stoa.usp.br/escolafocus/weblog/49774.html)
4) Finally, the most common Portuguese terms used in reference to halation seem to be 'halo' (again) and 'efeito de halo.' The latter is also used in psychological studies, I believe, as well as in graphic arts (referring to the printing process) but it appears quite frequently in photography.
Own research - by Lu M (X)
- Example sentence(s)
- "Finalmente, ligada à base de acetato por mais uma camada de adesivo, vem a camada anti-halo, que tem por finalidade evitar que os raios de luz que atravessam a emulsão sejam refletidos e causem halos nas partes claras da fotografia." - Girafamania by Lu M (X)
- "Uma diferença quase imperceptível na grossura da gelatina pode resultar, dependendo da iluminação da cena, num ponto ou numa faixa difusa no material projetado; numa área mais clara dentro do enquadramento; numa área opaca; ou num efeito de halo." - Mnemocine by Lu M (X)
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Compare [close] - Portuguese
- Photography/Imaging (& Graphic Arts)
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- Trying to remember the photography classes I took years ago, the most familiar term it comes to my mind is 'halo,' which corresponds to the second meaning of halation in the Online Merriam-Webster Dictionary (http://www.merriam-webster.com/dictionary/halation).
ha•la•tion n.
1. A blurring or spreading of light around bright areas on a photographic image.
2. A glow around a bright object on a television screen.
In some cases, instead of 'halo,' it is possible to use 'auréola,' both terms relating to rounded light/ optical effects. The Portuguese definition of 'halo' can be found at Priberam's Dicionário da Língua Portuguesa (http://www.priberam.pt/DLPO/default.aspx?pal=halo):
halo
(latim halos, -o, do grego latim hálos, -o, eira, grão na eira, disco do Sol ou da Lua)
s. m.
1. Círculo luminoso que às vezes se nota em volta do Sol e de alguns planetas devido a certo estado da atmosfera.
2. Círculo que rodeia o mamilo.
3. Fig. Auréola.
4. Brilho
5. Prestígio, glória.
I came across a few options to translate halation as a technical photography term:
1) First, it is possible to keep the original term in English, although most of the occurrences I found of this use actually refer to 'anti-halation' (backing or coating) and not to the word 'halation' alone
2) The Dicionário Editora de Português-Inglês (Porto Editora, 2009) translates halation as 'halação,' but gives no examples and no further explanation (http://www.infopedia.pt/portugues-ingles/hala%C3%A7%C3%A3o )
3) Professor Enio Leite Alves, from Sao Paulo University (Usp), mentions 'halo,' 'ofuscamento,' and 'efeito de neblina luminosa' on his 'Glossário Fotográfico' (http://stoa.usp.br/escolafocus/weblog/49774.html)
4) Finally, the most common Portuguese terms used in reference to halation seem to be 'halo' (again) and 'efeito de halo.' The latter is also used in psychological studies, I believe, as well as in graphic arts (referring to the printing process) but it appears quite frequently in photography.
Own research - by Lu M (X)
- Example sentence(s)
- "Finalmente, ligada à base de acetato por mais uma camada de adesivo, vem a camada anti-halo, que tem por finalidade evitar que os raios de luz que atravessam a emulsão sejam refletidos e causem halos nas partes claras da fotografia." - Girafamania by Lu M (X)
- "Uma diferença quase imperceptível na grossura da gelatina pode resultar, dependendo da iluminação da cena, num ponto ou numa faixa difusa no material projetado; numa área mais clara dentro do enquadramento; numa área opaca; ou num efeito de halo." - Mnemocine by Lu M (X)
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Compare [close] - Spanish
- Photography/Imaging (& Graphic Arts)
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- "Halation" es conocido en español como el EFECTO DE HALO el cual se ve como una aureola que rodea la imagen fotográfica de un objeto brillante o bien, es un efecto que se puede crear sobre una imagen fotográfica por medio de programas especiales. Own research - by Anne Brose
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Compare [close] - Serbian
- Photography/Imaging (& Graphic Arts)
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- Halo-efekat u optici (i u fotografiji) je pojava zamagljenosti, rasplinutosti kontura - slično oreolu. Obično se javlja oko svetlih površina ili oko sjajnih objekata. Own research - by V&M Stanković
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- Filtar Solarize meša negativ i pozitiv slike, što kao rezultat daje tzv. halo efekat. - CET by V&M Stanković
- NXP, kompanija koju je osnovao Philips je predstavila prvo postprocesorsko integrisano kolo koje uklanja halo efekat iz slike na HDTV uređajima. NXP PNX5100 Motion Accurate Picture Proccesing tehnologija omogućava proizvođačima televizora da unaprede sliku visoke definicije na LCD televizorima. - ITsvet by V&M Stanković
- Da se u atmosferi događa nešto neobično registrovao je i jedan američki amater-astronom kada je 22.11.2009. snimio Sunce iznad Misisipija i video da zraci formiraju tri halo-efekta, iako Sunce, poznato je, ima samo jedan. Ovaj halo-efekat nastaje kada se zbog prelamanja svetla koje prolazi kroz ledene čestice u atmosferi oko Sunca ili Meseca vidi svetleći oreol. - Tabloid by V&M Stanković
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- Compare this term in: Albanian, German, English, Persian (Farsi), Finnish, French, Hungarian, Italian, Japanese, Slovak
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