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Dag 15: Farveforsats og diverse diffusere til flash

I dag har jeg lavet en test af alle farveforsatser, der blev leveret med HONL-lyssættet til Nikon Speedlight. Her er det sæt, jeg købte:



Alle elementer kommer i en lille sort taske, der indeholder to store lys formere i guld, sølv og sort, der kan formes som et rør eller en reflektor, en mindre lys former i sølv, to små reflektorer til at montere på siden af flashen-  i hvidt og guld, to honningmønster diffuser, to velco bånd og et sæt farveforsatser - to i hver farve.

Jeg valgte en enkel opsætning. Et hvidt stykke papir, hvor jeg placerede en lille hvid skulptur. Min Nikon D300 med AF-S 18-70mm f/3.5-4.5G ED-linse var monteret på et stativ. En SP-900 flash blev tilsluttet kameraet med et SC-29-kabel, der gjorde det muligt for mig at håndholde flashen og styre lysretningen.

Farvekorrektion er en proces hvis formål er at ændre lysets overordnede farve. Uden farvekorrektionsforsatser kan en scene have en blanding af forskellige farver. Anvendelse af farvekorrektionsforsatser foran lyskilder kan ændre farven på de forskellige lyskilder, så de passer til hinanden.
Farvekorrektionsforsatser anvendes også til at få en scene til at virke mere naturlig ved at simulere blandingen af ​​farvetemperaturer, der forekommer naturligt. De kan også bruges til at farvetone for kunstnerisk virkning, hvilket er, hvad jeg har gjort i denne lille test.

Lad os starte med et foto uden nogen farve gel - blot en honningmønster diffuser. Jeg har ikke ændret billedet i LR.



Fra nu af anvender jeg de produktnavne HONL har givet de forskellige farveforsatser.

Just Blue:


1/2 CTB (Color Temperature Blue):


Moss Green:


Full +Green:


Bright Red:


Medium Yellow:


Heavy Frost:


1/4 CTO (Color Temperature Orange):


1/2 CTO (Color Temperature Orange):


1/1 CTO (Color Temperature Orange):



De vigtigste farvekorrektion geler er CTB (farvetemperatur blå) og CTO (farvetemperatur orange). En CTB-farveforsats konverterer tungstenslys i 3200K til 'dagslys' -farve. En CTO-farveforsats udfører det modsatte. Farveforsatser, der fjerner det grønne skær fra et lysstofrør, kaldes minus grønt. Farveforsatser, der tilføjer en grøn tone kaldes plus grøn. En 1/2 CTO-farveforsats er halvdelen af ​​farvestyrken af ​​en (fuld) CTO-farveforsats.

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