Sony Vario-tessar T* Fe 24-70mm F/4 Za Oss Lens Review

In summary

Suitable for shooting portraits, landscapes and full general photography, this lens is a natural 'walk-effectually' partner for the α7 cameras, partly because of its size merely also because it has been designed for high-performance cameras. It's likewise a amend performer on cameras with 36 x 24mm sensors than with APS-C models (we tested it on both).

This lens is worth considering if you plan to buy an α7 body since bundling it with a camera should exist cheaper than buying the lens on its own. Weatherproof sealing will be advantageous to photographers who do a lot of outdoor shooting and the relatively fast f/iv maximum aperture provides potential for depth-of-field control and shooting in low light levels.

But it's not super-fast "" and the zoom range isn't all that long, although the 70mm setting is fine for portraiture. Serious photographers volition need to complement this lens with a telephoto zoom like Sony's 70-200mm F4 Grand OSS lens if they desire to encompass sports and wild animals shooting.

Full review

Sony's first total-frame Eastward-mount Carl Zeiss zoom lens, the Vario-Tessar T* FE 24-70mm f/4 ZA OSS lens is quite different from the SELP1650 16-50mm f/3.5-5.6. While both lenses cover a 'standard' zoom range, the Vario-Tessar T* FE 24-70mm f/iv, being relatively big and heavy, is a better partner for the α7R camera we used for this review. However, it tin also be used on E-mount cameras with smaller sensors where it covers the 35mm equivalent of 36-105mm.

Side view of the Vario-Tessar T* Atomic number 26 24-70mm f/four ZA OSS lens. (Source: Sony.)

The Zeiss branding implies a fairly loftier cost tag, although it'south comparable with equivalent lenses from the leading DSLR manufacturers. For the toll you become decent build quality and a relatively fast f/4 maximum aperture beyond the zoom range. This lens is also conditions-sealed, which adds to its value.

The optical design is moderately complex, with 12 elements in 10 groups, among them 5 aspherical elements and one ED (extra-low dispersion) element. A proprietary T* blanket is applied to lens elements to minimise reflections that cause flare and ghosting.

The lens is supplied with front and end caps and a petal-shaped lens hood (ALC-SH130). A soft carrying pouch is too included.

Who's it for?
Suitable for shooting portraits, landscapes and general photography, this lens is a natural 'walk-around' partner for the α7 cameras, partly because of its size but likewise because it has been designed for high-operation cameras. Information technology'due south besides a better performer on cameras with 36 x 24mm sensors than with APS-C models (we tested information technology on both).

This lens is worth considering if you program to purchase an α7 torso since bundling it with a camera should exist cheaper than buying the lens on its own. Weatherproof sealing volition be advantageous to photographers who do a lot of outdoor shooting and the relatively fast f/iv maximum discontinuity provides potential for depth-of-field command and shooting in low light levels.

But it'due south not super-fast "" and the zoom range isn't all that long, although the 70mm setting is fine for portraiture. Serious photographers will need to complement this lens with a telephoto zoom like Sony'southward 70-200mm F4 G OSS lens if they want to embrace sports and wildlife shooting.

Build and Ergonomics
Overall build quality is very good, with a high percent of metal alloy in the barrels and a very solid metallic mounting plate. It looks and feels superior to the relatively light aluminium kit lenses for Sony's APS-C E-mount cameras.

The focusing and zoom rings are shut together, with the leading edge of the focusing ring approximately 13 mm behind the forepart of the lens. This ring is xiv mm wide and covered with a finely-ridged grip band.

Focusing is electronically controlled and driven by a linear stepping motor. It'southward well implemented and supports fine adjustments but isn't quite equally fast as a mechanical focus command and doesn't provide much tactile feedback.

An almost identical ribbing also covers near of the zoom ring, which is roughly 27 mm broad. The trailing edge of this ring is un-ridged and carries indicator marks for the 24mm, 35mm, 50m and 70mm focal lengths. These line upwardly against a white mark on the non-moving section of the lens barrel.

Both rings on the review lens turned smoothly and, although in that location's no lock, there was no zoom creep when the lens was carried facing downwards. Zooming from 24mm to 70mm extends the inner barrel by approximately 30 mm.

Backside the zoom band the lens barrel remains straight for 18 mm before stepping inwards for the final twenty mm that leads to the lens mount. The characteristic cinnabar-coloured ring surrounds the barrel merely in front of the mounting point.

Stabilisation is built into this lens, enabling it to be used on cameras without Steadyshot Inside engineering. It provides between 2 and three f-stops of shutter speed compensation.

With a minimum focusing distance of only 40cm, this lens isn't ideal for close-upward shooting. In practice, zooming in to 70mm extended the minimum focus distance a little, although the smaller bending of view and higher magnification made it easier to frame modest subjects. The f/4 maximum aperture at 70mm provided some telescopic for isolating subjects from the background, although nowhere near every bit much equally an f/2.8 lens would provide.

Performance
Subjective cess of JPEGs directly out of the photographic camera showed them to be colour rich and detailed, specially with shots taken in bright, sunny weather condition. With flatter lighting, the more subdued colour saturation indicated past our Imatest tests became evident, although overall sharpness was maintained in the centre of prototype frames.

Imatest showed this lens to be capable of meeting expectations for the 20-megapixel sensor on the a5000 body with both JPEG and ARW.RAW files but JPEGs taken with the much higher-resolution α7R  photographic camera couldn't quite achieve the expected resolution. This is a big ask for whatsoever camera and lens combo and hasn't adversely afflicted our ratings for the lens.

One factor that has afflicted our ratings was edge softening, which was very noticeable with the α7R at apertures wider than f/5.vi for all focal length settings. (The a5000 cropped away the periphery of the prototype frame, resulting in much less edge softening.) The graph below shows the Imatest results for the aperture ranges for each focal length setting.

From the graph you can see that resolution is more often than not high in the centre of the frame from f/four through to f/8, after which information technology declines slowly but steadily due to the influence of diffraction. But the edges of the frame remain soft at all focal lengths.
Like other Sony lenses, this lens has been designed for use with cameras that provide automatic corrections for rectilinear distortions, vignetting and chromatic aberration. Consequently, we used raw files to assess performance in these areas and found the following:

Distortion  not corrected in the camera is significant and ranges from serious barrel distortion at 24mm to slight pincushion baloney at 35mm with a progressive increase in pincushion distortion at 50mm and 70mm. With auto-corrected JPEGs, very piddling distortion tin exist seen.

Vignetting not corrected in the camera produces noticeable corner darkening at 24mm. This is reduced progressively for longer focal lengths and fall-off is relatively slight at 70mm. With auto-corrected JPEGs, vignetting is effectively negligible.

Lateral chromatic abnormality was generally very depression in both auto-corrected JPEGs and uncorrected ARW.RAW files. We don't run across this equally a problem for this lens. The results of our Imatest tests are shown in the graph beneath.

Flare resistance was more often than not fantabulous, thanks to the well-designed lens hood and superior anti-reflection coatings. This is a stiff point of this lens.

Bokeh was also variable and smoother with the a5000 torso than the α7R. Out-of-focus backgrounds with that camera tended to show traces of outlining and tonal transitions weren't equally smoothen as most photographers would wish for.

Autofocusing speed is largely dictated by the camera and the selected focusing way. We've covered these aspects of performance in our review of the α7R photographic camera.

Conclusion
While photographers who work with raw image files will probably detect this lens unsatisfactory, everyday shooters who take only JPEGs volition probably discover it meets their needs for a reasonably fast 'walkaround' lens. The problems are particularly pregnant for landscape and architectural photographers who require shots to be sharp corner-to-corner.

Since we cater more for the raw shooters than snapshooters, we're unable to rate the performance of this lens as highly every bit some reviewers would have. There aren't many lenses in Sony's E-mountain range and owners of α7 cameras have few other choices in this focal length range, aside from the Sony Iron 28-70mm f/3.5-5.half-dozen OSS (SEL2870), which doesn't cover such a wide bending of view. The larger, heavier and faster Sony 24-70mm f/2.8 ZA Carl Zeiss Vario Sonnar T* (SAL-2470Z) lens could be used with an adapter, although information technology'southward more expensive and lacks stabilisation.

SPECS

Pic angle: 84 to 34 degrees on 35mm format cameras (61-23 degrees with APS-C sensors)
Minimum aperture: f/22
Lens construction: 12 elements in x groups (including 5 aspherical elements and one ED element)
Lens mounts: Sony E-mount
Diaphragm Blades: 7 (round aperture)
Focus drive: Linear stepping motor
Stabilisation: Optical SteadyShot
Minimum focus: 40 cm
Maximum magnification: 0.2x
Filter size:   67 mm
Dimensions (Bore x L): 73 x 94.v mm
Weight:  426 grams
Standard Accessories: Front and stop caps, petal-shaped lens hood, soft conveying pouch

TESTS

Based on JPEG files taken with the Sony α7R.

Based on JPEG files taken with the Sony α5000.

SAMPLES

Vignetting at 24mm; ARW.RAW file.

Vignetting at 35mm; ARW.RAW file.

Vignetting at 50mm; ARW.RAW file.

Vignetting at 70mm; ARW.RAW file.

Rectilinear baloney at 24mm; ARW.RAW file.

Rectilinear baloney at 35mm ARW.RAW file.

Rectilinear distortion at 50mm; ARW.RAW file.

Rectilinear distortion at 70mm; ARW.RAW file.

24mm focal length, ISO 100, ane/160 second at f/11.

35mm focal length, ISO 100, ane/160 second at f/11.

50mm focal length, ISO 100, 1/160 second at f/11.

70mm focal length, ISO 100, 1/160 second at f/11.

Shut-up at 24mm α7R; ISO 100, i/800 second at f/iv.

Close-up at 70mm α7R; ISO 100, 1/500 second at f/half dozen.3.

Shut-upwards at 70mm α5000; ISO 100, 1/1250 second at f/four.

Bokeh at 70mm α7R; ISO 100, i/1250 second at f/4.

Flare at 24mm α7R; ISO 100, ane/125 2d at f/eleven.

70mm focal length, ISO 100, ane/400 2nd at f/11.

Crop from the in a higher place epitome showing minimal coloured fringing.

70mm focal length, ISO 100, i/200 second at f/13.

70mm focal length, ISO 100, ane/160 second at f/11.

37mm focal length, ISO 100, 1/400 second at f/8.

Additional image samples tin be found with our review of the Sony α7R camera.

Rating

RRP: AU$1499; United states$1200

• Build: nine.0
• Handling: 8.5
• Image quality: 8.v
• Versatility: 8.five

Buy

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Source: https://www.photoreview.com.au/reviews/mirrorless-lenses/mirrorless-lenses-full-frame/sony-vario-tessar-t-fe-24-70mm-f-4-za-oss-sel2470z-lens/

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