đánh giá sel 55-210

Introduction

Introduced in 2011, Sony’s E 55-210mm f4.5-6.3 OSS falls into the firm’s entry-màn chơi line-up, and was the first telephoto zoom launched for the NEX, now Alpha, APS-C mirrorless models. As the equivalent lớn an 85-320milimet, this sensitively priced Mã Sản Phẩm is an obvious counterpart lớn the firm’s 18-55mm starter lens. Despite being aimed at beginners, it features two extra low dispersion glass elements and one aspherical lens in its construction. The latter is used in the focusing group to lớn improve AF accuracy from the camera’s contrast detection AF system.

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Sony’s OSS four-stop stabilization system is included to reduce camera shake – a useful addition in a long lens with only a moderate maximum aperture. This Model can also boast internal focusing và a linear driven ‘stepper’ type AF motor for smooth, near silent focus operation. With a 49milimet filter thread, the lens measures 2.51 x 4.25″ (63.8 x 108 mm) and weighs in at 12.17 oz (345 g). It’s available for around $350.

Image unique ranking: Sony E 55-210milimet F4.5-6.3 OSS mounted on Sony NEX-7


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The Sony E 55-210mm f4.5-6.3 OSS achieved a phukienotocaocap.com score of 12 points overall và is about average for a lens with this range of focal lengths. Peak sharpness of 7-Mpix, however, is on the low side given the resolving power of the 24-Mpix sensor of the Sony NEX-7. Like many affordable zooms, this one performs better at the shorter-over of the zoom range and like most lenses, it requires stopping down at least a stop khổng lồ improve sharpness in the outer field.

At 210milimet, it’s soft wide open where it counts & although sharpness improves a little at f/8, it’s still only moderately sharp in the center. Some mild pincushion distortion can be seen throughout the zoom range, and despite the modest aperture there’s quite noticeable vignetting, peaking at 1.5Ev wide open at 55mm, though it pretty much disappears by f/8. Lateral chromatic aberration is well controlled, though some may be noticeable in the corners at 55mm.


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Sony E 55-210mm F4.5-6.3 OSS mounted on Sony NEX-7 Versus Sony DT 55-200mm F4-5.6 SAM mounted on Sony SLT Altrộn 77 Versus Canon EF-S 55-250mm f/4-5.6 IS II mounted on Canon EOS 7D:


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When matched to lớn similar offerings the Sony achieves a comparable ranking for overall image chất lượng. Against the longer-range Canon EF-S 55-250mm f4-5.6 IS II on the 18-Mpix Canon EOS 7D it may have sầu only slightly higher peak sharpness, but it’s sharper at every setting (though keep in mind the difference in sensor has a bearing here). However, the Canon has lower levels of chromatic aberration, particularly at 55mm & slightly better control of vignetting. Distortion varies between barrel và pincushion but as the phukienotocaocap.com scores reveal, the two are closely matched.

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Compared against the firm’s slightly faster DT 55-200milimet f4-5.6 SAM zoom from 2009, the newer E-mount Model compares favorably overall but lacks its sibling’s sharpness wide-open. That makes the DT model much more practical even though it has rather lower uniformity. Both vignetting and distortion are well controlled but the DT has very noticeable chromatic aberration at 200milimet. This is heavy enough khổng lồ degrade image chất lượng, although fortunately it’s more noticeable when stopped down.


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Wide-open performance is disappointing at 210milimet, và while the DT sibling has better center sharpness, it has rather high levels of lateral chromatic aberration.


Conclusion

Lenses are a set of compromises và nowhere is that more obvious than with accessibly priced zooms. The Sony E 55-210milimet f4.5-6.3 OSS is somewhat disappointing at the longer end of the zoom range, in terms of sharpness, but in every other respect the performance is well balanced. It may not satisfy demanding enthusiasts but, given the price, the lens is not an unattractive sầu option for Sony Alpha users looking for a change in perspective sầu from the kit lens.

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