Sony a Lenses Manuel d'utilisateur télécharger pdf (Page 22)

Telephoto zoom

70–200mm F2.8 G SAL70200G

The range from 70 to 200 millimeters is where much of the telephoto action

occurs. The ability to cover that range with a constant F2.8 aperture affords

some significant photographic advantages, and the outstanding clarity and

contrast offered by the SAL70200G multiplies those advantages many times

over. Although the large F2.8 maximum aperture does make it easier to

create beautifully defocused backgrounds, there are important advantages

for shooting moving subjects as well. Larger apertures—often referred to as

“fast” as well as “bright”—allow you to use faster shutter speeds to achieve

equivalent exposure, making it possible to capture motion that might end

up as a blur with a slower lens. The SAL70200G does it all with characteristic

G Lens refinement and class.

• Weight

(

approx

)

: 1340 g

• Dimensions

(

Dia. x L

)

: 87 x 196.5 mm

• Max. magnification ratio: 0.21x

• Tripod mount supplied

Four ED glass elements effectively suppress aberration

Constant F2.8 maximum aperture

Outstanding sharpness and contrast throughout the zoom range

SSM

(

Super Sonic wave Motor

)

for fast, quiet autofocus operation

Circular aperture for attractive defocusing

Focus hold and focus range switches offer precision focusing control

ED glass

At 70 mm

At 200 mm

100

048121620

Contrast (%)

100

048121620

Distance from center of image (mm) Distance from center of image (mm)

Spatial frequency

10 line pairs/mm

30 line pairs/mm

R: Radial values T: Tangential values

Max. aperture

R RT T

F8 aperture

Telephoto zoom

70–300mm F4.5–5.6 G SSM SAL70300G

The SAL70300G is the smallest and lightest zoom in the current G Lens series,

offering an appealing combination of extended zoom range and handling,

plus image quality that will satisfy the most demanding photo enthusiast or

pro. An ED lens element collaborates with an advanced optical path design

to achieve exceptionally low aberration right out to the maximum 300mm

focal length, so that your telephoto images benefit from impressive clarity

and depth. 300mm is generally considered to be the point at which the

“medium” telephoto range ends and the “super” telephoto range begins.

Long focal lengths like this require careful handling to prevent camera shake,

but SteadyShot INSIDE™ image stabilization featured in a series bodies

will help you capture clear, blur-free images in a wider range of handheld

shooting situations than would normally be possible.

• Weight

(

approx

)

: 760 g

• Dimensions

(

Dia. x L

)

: 82.5 x 135.5 mm

• Max. magnification ratio: 0.25x

• Tripod mount supplied

One ED glass element contributes to minimal aberration

Outstanding sharpness and contrast throughout the zoom range

SSM

(

Super Sonic wave Motor

)

for fast, quiet autofocus operation

Circular aperture for attractive defocusing

Focus hold and focus range switches offer precision focusing control

100

048121620

Contrast (%)

100

048121620

Distance from center of image (mm) Distance from center of image (mm)

Spatial frequency

10 line pairs/mm

30 line pairs/mm

R: Radial values T: Tangential values

Max. aperture

R RT T

F8 aperture

At 70 mm

At 300 mm

ED glass

A mode, 1/60 sec., F11, ISO 100, Daylight white balance A mode, 1/400 sec., F13, ISO 400, Auto white balance; Photo: Mark Tiller

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Sony a Lenses Manuel d'utilisateur Page 22

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