Cokin WX125F Datasheet download pdf (Page 13)

The COKIN Z-PRO System offers a variety of models of adapter rings, available in a set

(opposite). Manufactured in France out of machined aluminum and black anodized to

prevent reﬂections, these non-deformable rings are, with the exception of the Ø 95 and

96 mm, remarkably compact. Their rapid action threading is designed to not damage

the threading of your lenses. They avoid vignetting on lenses up to 86 mm in diameter.

However, due to their thickness, both the Ø 95 and 96mm rings can – with certain lenses

– limit your angular ﬁeld. If you need to mount a Z-PRO ﬁlter-holder onto a lens with a

diameter of less than 49 mm, COKIN offers step-down rings down to 24 mm. The ﬁlter-

holders ﬁt very snugly on the adapter rings, with no more than a few tenths of a millimeter

of play, assuring the rapid, smooth rotation indispensable for the precise adjustments

required by certain ﬁlters.

Mounting a ﬁlter holder onto a lens equipped with the appropriate adapter ring is simple,

sure and fast. Under these conditions changing lenses takes but a matter of seconds,

assuming each lens has its own ring, obviously... This is the perfect set up, especially

when the light is rapidly changing.

The adapter rings for

the Z-PRO System are

ultra-thin*:

the body of the ring itself

is only 1.7 mm thick!

Perfectly rigid, they

conform to the lens and

cause no vignetting.

This is why the Z-PRO

System has no need of

a “special wide-angle”

adapter ring.

(*with the exception of the

95 mm and 96 mm rings)

Front

view

Side

view

UNIVERSAL,

the COKIN

Z-PRO System covers the

entirety of professional

image production tools,

ﬁlm or digital, still or

moving images, in all

formats currently found on

the professional market.

Today and tomorrow, it will

respond to your needs,

guaranteeing the soundness

of your investment for years

to come.

ADAPTER RINGS

THREADED OR BAYONET RINGS –

ULTRA THIN – UNIVERSAL COMPATIBILITY

POLARIZING FILTERS

LINEAR & CIRCULAR POLARIZERS

VARICOLOR® BLUE/YELLOW

The Z-PRO polarizing ﬁlters constitute one of the major advantages of

the System. High-tech to the extreme (see opposite) they are inserted

directly into the ﬁrst slot of the ﬁlter-holder and need no extraneous

accessories. Placed very close to the lens, they produce no vignetting

and are much better protected against reﬂections than when positioned

further from the lens, as with certain other ﬁlter systems on the market.

Moreover, in contrast to those “slim” screw-in polarizing ﬁlters lacking

additional threading on their exterior side, one can add another ﬁlter to

the conﬁguration if necessary. Finally, owing to the conception of the

Z-PRO System, you will only need a single polarizing ﬁlter for all of your

lenses, current or future, up to 96 mm in diameter!

Each Z-PRO polarizing ﬁlter is set in a patented notched frame (see below)

that allows for precision rotational ﬁne-tuning with the index ﬁnger,

independently of the ﬁlter-holder itself to be used in combination with a

graduated ﬁlter, for example.

Light and compact, a Z-PRO polarizing filter is astonishingly simple to use

and renders extraordinary results, as much in terms of its optical quality as

in the visual impact of your images themselves. Its chromatic neutrality is

unquestionable (see page 49).

THREAD

(Ø x thread, in mm)

49 x 0.75

52 x 0.75

55 x 0.75

58 x 0.75

62 x 0.75

67 x 0.75

72 x 0.75

77 x 0.75

82 x 0.75

86 x 0.75

86 x 1.00

95 x 1.00

96 x 1.00

BAYONETS

Hasselblad

B50

Hasselblad

B60

Hasselblad

B70

Rollei

For all other

dimensions,

please contact us.

Even if not as often employed as some of the others, this unique filter offers

compelling possibilities for use with those subjects that lend themselves to its

magic! For example, if the two dominant colors in your composition are those

of the filter itself, —such as a warm foreground and a background in tones of

blue, like a harvest landscape against a blue sky, the Varicolor® blue/yellow will

enrich your image with an astonishing palette of colours (see pages 6-7).

VARICOLOR® BLUE/YELLOW (Z173)

A COKIN exclusive, this ﬁlter can be compared to a bicolor blue and

yellow polarizing ﬁlter. By rotating it in the ﬁlter-holder, the reﬂections

of the image change subtly and continuously, then, after a quarter turn,

jump suddenly over to the complementary colour.

Diameter : 100 mm

One of those tools a

serious photographer

just can’t do without

PEERLESS

VERSATILITY

Of all ﬁlters that can be

employed at capture, the

polarizing ﬁlter is without

contest the one whose impact

on your images will be most

signiﬁcant; intensifying the

blueness of the sky, saturating

the entirety of the colour

spectrum, ﬁnessing the

intensity of bright lights and

reﬂections! (see pages 6-7)

•

In sunny weather – and even

more during morning or evening

hours – and if you respect a

right angle (90°) between the

shooting axis and the position

of the sun, a polarizing ﬁlter

will darken the blue of the sky

(sometimes making it almost

black...), throwing the clouds

into stark relief.

•

The intensity of its effect also

depends on the ﬁlm used, or,

in digital photography, on your

level of saturation, but in either

case its contribution remains

crucial because there is more,

real content to work with.

•

Note that with wide-angle

lenses from 24mm and shorter

(in 35mm photography terms)

the side of the image which

is farthest from the sun will

be darker than the other.

This is an inevitable optical

phenomenon, independent of

the polarizing ﬁlter, that must

be corrected using a neutral

density graduated ﬁlter.

•

Whether used in full sunlight

or in overcast weather,

polarizing ﬁlters signiﬁcantly

improve the saturation of

colours. You will obtain

greener greens, richer reds

and ever more brilliant yellows.

You will be surprised to see

how certain colours, dull to the

naked eye, become vibrant and

dazzling with this ﬁlter.

•

In all kinds of weather,

polarizing ﬁlters reduce,

eliminate, and deepen

reﬂections on all non-metallic

surfaces like water or windows.

This capacity to work on all

reﬂections and bright lights

ﬁnds numerous photographic

applications which one must be

careful not to overuse... It brings

transcendence to vegetation,

transforms bodies of water,

opens vistas... brings ﬁsh to the

surface... nymphes even!

Polarizing ﬁlters are often used

in conjunction with other ﬁlters

such as the 81 A or 81B warming

ﬁlters (026, 027) or the neutral

density graduated ﬁlters (121L,

121M, 121S). See pages 37 and 33.

CIRCULAR OR LINEAR ?

•

Linear polarizing filters (Z160) risk – depending on the optical scheme

of a given camera body – interfering with some auto-focus or exposure

metering systems.

Reserve Iit for large format lenses and for holder SLR Cameras with manual

focus. Outside of this particularity, the photographic results will be

identical with either model.

•

Circular polarizing ﬁlters (Z164) are perfectly compatible with auto-focus

cameras and through-the-lens (TTL) metering systems. The circular model must be

oriented correctly! you can check its orientation by observing a subject throught

the ﬁlter. In order to appreciate this effect, simply rotate and examine how the

image changes progressively, either in the viewﬁnder or with the naked eye.

A Z-PRO polarizing ﬁlter is also very simple to use with a panoramic or rangeﬁnder

camera. Expo. + 1~2 stops, according to the intensity of teh ﬁlter’s effects.

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Cokin WX125F Datasheet Page 13

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