Cokin WX125F Fiche technique télécharger pdf (Page 22)

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PASTEL FILTERS

When one wishes to bring a romantic or mysterious atmosphere to an image, to put

an often disappointing reality in its best light, or to give the image a visibly painterly

appearance, every image creator must need, at one time or another, a diffusion ﬁlter

whose effect is either barely perceivable, or that lends a somewhat dreamlike form to

the image.

In this area, the choices COKIN offers are as vast as its worldwide reputation. The Z-PRO line

offers 20 ﬁlters of this kind, presented in the 6 following pages.

DIFFUSER FILTERS

The

outstanding images taken with a COKIN diffuser ﬁlter are now too numerous to mention ! These ﬁlters use

an exclusive COKIN process created by its founder and kept carefully secret ever since in the company

laboratories. It’s the way they diffuse the light from the luminous points of the image that gives shots that

characteristic aspect. Copied numerous times but never equaled, the Z-PRO diffuser ﬁlters exist in 4 intensities,

from the most subtle to the most marked. There is nothing else like them on the market.

•

The Diffuser Light (820) is best for landscape photography and intimate portraiture. There is no equal for reducing

facial wrinkles and small imperfections of the skin and is almost unperceivable.

•

With the Diffuser 1 (830) and especially the Diffuser 2 (840), you can literally make the years melt away as if by magic,

leaving behind only radiance and glow. As for nature shots, they will have a completely different dimension! Discovering

these ﬁlters means entering into a world of images that were the mark of an era, and when one ﬂips through a current fashion

magazine, it’s clear that they’re back in style!

•

The Diffuser 3 (850) offers such a great diffusing potential that it virtually transforms itself into a shower

curtain and you are propelled into Brian de Palma’s “Dressed to Kill”. The nude remains its subject of choice.

•

Diffuser light : subtle diffusion

•

Diffuseur 1 : visible diffusion

•

Diffuseur 2 : marked diffusion

•

Diffuseur 3 : total diffusion

No exposure change.

According to whim or necessity, in numerous photographic domains (portrait, fashion, nature or landscape, to

name but a few), photographers and ﬁlmmakers time and again choose the COKIN soft diffusion because of their

variety paired with such remarkable quality.

Diffuser and Pastel ﬁlters are among the most difﬁcult to manufacture. Indeed, toning down an image is not the

same as making it out of focus... It is all a matter of balance and mastery of the diffusion of light, as engineers of

specialized optics well know. These types of ﬁlters transmit, depending on their degree of diffusion, 70 to 90%

of the image’s original sharpness, and use other processes to obtain the effect of diffusion for the rest of the

spectrum, playing either on the sharpness or the contrast, or both.

With

these filters you enter right into a romantic atmos-

phere,

so strong is their effect on the image.

They add a soft, unique touch to portraits; hair flows

like silk, skin is warm and expressions languid. As

for still lifes, they come close to the appearance of a

painting, attaining an incomparable atmosphere that is

delicate and fresh.

•

These two ﬁlters – the second being simply stronger

than the ﬁrst – bring out lively colours and intense lights,

diffusing and treating them like an artist.

These filters give superb outdoor results, in cloudy weather, and

indoors when light is coming sideways from a window. The expo-

sure is sometimes a delicate issue. Double, even triple your expo-

sures by overexposing at intervals of 1⁄2 or 1 stops. Finally, these

filters combine wonderfully with coloured orange or blue filters to

create a specific look, or even with graduated colour filters.

Used

on an everyday basis in cinema for some time now, the net ﬁlters diffuse and disperse reﬂected

light. The Z-PRO line offers four net ﬁlters. Depending on their tonality, they conserve and

contrast (blacks), or diminish (whites), reducing the power and the saturation of tints. According to the

ﬁneness of their mesh, their effect can be marked or discreet: the tighter the mesh is, the more pro-

nounced the diffusion.

•

In portraiture, these ﬁlters reduce or eliminate undesired reﬂections on the skin, such as on the nose,

the chin or the forehead, whether they be due to the sun, to ﬂashes, or to spotlights. In landscapes,

they ensure a harmonious distribution of light when using backlighting, bringing their unique touch to

the image.

As a general rule, one can say that their effects are strong for small details

while uniform surfaces are only slightly affected. Always place them in the

ﬁrst groove and do not go past an aperture of 4 or 5.6 while working, especially

if you’re using a wide-angle lens, otherwise you risk having their structure

appear on the image.

They are in essence wide-aperture ﬁlters which means that they may raise a few

difﬁculties for use with landscapes where a wide depth of ﬁeld is required.

• Net ﬁlter 1 White : marked diffusion effect, diminished

contrasts. + 1/3 stop

• Net ﬁlter 1 Black : marked diffusion effect, retained

contrasts. + 1/3 stop

• Net ﬁlter 2 White : discreet diffusion effect, diminished

contrasts. + 1/3 stop

• Net ﬁlter 2 Black : discreet diffusion effect, retained

contrasts. + 1/3 stop

DIFFUSION FILTERS

DIFFUSERS – PASTELS – NET

Diffuser

Light

820 Diffuser

840Diffuser

830 Diffuser

850

FILTER 830

FILTER 840

FILTER 820

THE NET FILTERS

• Pastel 1 : strong effect,

portraits, still lifes, landscapes.

• Pastel 2 : very strong effect,

portraits, still lifes

No exposure change.

Pastel 1 086 Pastel 2 087

Net Filter

1 White

142

Net Filter

2 White

144

Net Filter

1 Black

143

Net Filter

2 Black

145

FILTER 086 FILTER 145

IN PRACTICE,

the results obtained

with diffuser ﬁlters

are closely linked to

the intensity and the

quality of light used.

Think of overexposing

by 1/3 or 1⁄2 of a stop

to accentuate their

effect. You will then

see that bright lights

take on a completely

different dimension!

In addition, the effect

is in general much

more pronounced

than with an open

diaphragm. Finally,

do not forget that

with certain ﬁlters,

auto focus will stop

working...

Even if the most

recent software

versions

have made

great strides in the

area of out-of-focus

shots, one must still

keep in mind that they

canno’t recreate the

quality and the variety

of diffusion effects with

ﬁlters. Consider that,

with ﬁlters, results are

obtained instantly, they

are perfectly predicta-

ble and you can change

them very simply and as

many times as you need

until you obtain your

desired result. In one

case you are in front

of your model, in the

other, in front of your

computer screen...

> Photography Ariel Greco

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Cokin WX125F Fiche technique Page 22

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