How to choose a cheap telephoto lens for Sony E-mount?

In 20021year, Longteng and Sigma successively released Sony E-mount telephoto lenses150-500mf/5-6.7diii VC VXD and150-600mf5-6.3dgdnos | Sports. Since then, Sony users have more choices of native telephoto lenses. However, the two newly released telephoto lenses are similar to the specifications of Sony FE 200-600mm F5.6-6.3 G OSS. How do consumers choose the right lens?

In June of 20 19, Sony released two telephoto lenses-Fe 600 mm F4 GM OSS and FE 200-600mm F5.6-6.3 G OSS, in which FE 200-600mm F5.6-6.3 G OSS adopted 24 lenses 17 optical structure with a focal length of 200-600mm. Two magnifiers SEL 14TC and SEL20TC can be installed to enlarge the focal length to the maximum of 1200mm, and at the same time, the Quan Huafu will be kept and the dominant field of vision of Nikon P 1000 will be invaded. In addition, the price is only more than 10,000 yuan, far lower than the two models, so it has become the first choice for many A7 series bird users.

Sony FE 200-600mm F5.6-6.3 G OSS

But the FE 200-600mm F5.6-6.3 G OSS is not perfect. Although its weight is only 2. 1KG, which is within the tolerance range of hand-held shooting, its length reaches 3 18mm, which is nearly 50% higher than the 2.8 and 140 of the 720, which means that it can't be stored in a normal-sized photographic backpack with the fuselage. At the same time, locate the G head, the number of lens groups reaches 17, and there are many air surfaces. Needless to say, the quality of peso in Bai Wan is much worse, and the price is similar to that of Fe100-400 mm F4.5-5.6 gmoss. In addition, the magnification is only 0.2X, which is very unfavorable when shooting naked lenses at close range. Therefore, many users want to have a telephoto that is light, easy to store and has better image quality.

Unfortunately, the reality is far from cruel. Two years after the launch of Sony FE 200-600mm F5.6-6.3 G OSS, Longteng and Sigma released E-mount telephoto lenses, Longteng150-500mf/5-6.7 diiii VC VXD and Sigma 150-600 mm F5-6.3 DG DNOS |. Sony A7 series users are faced with lenses with such similar characteristics. How to choose the products that suit them? The following are the main specifications of the three lenses.

light

Longteng > Sony > Zhimo

If users pursue portability and want the lens to be light in weight and easy to store, Longteng150-500 mm F/5-6.7 di III VC VXD must be the first choice. Its tripod ring can be completely disassembled, and the minimum weight can be reduced to 1725g, which is close to the weight of 720 2.8 and 140 lenses, and the hand-held pressure will be obviously reduced. The most important thing is that the lens adopts external zoom design and short focal length, and the length in storage state is only 209.6 mm, which is almost the same as that of Sony Fe100-400 mm F4.5-5.6 gmoss (205 mm). It can be put in an ordinary photographic backpack together with the camera body, or a single lens can be put in a shoulder bag.

Longteng150-500mmf/5-6.7 diiivc vxd

However, the difference of optical aperture and the inability to install a magnifying glass determine that these are the only comparative advantages of Longteng150-500mf/5-6.7 di III VC VXD. (PS: In terms of optical structure, Longteng did not consider the problem of installing a magnifying glass when designing150-500mf/5-6.7 diiivc VXD. If Sony SEL 14TC and SEL20TC are forcibly installed, it is likely to smash the last lens. )

image quality

Sony > Zhimo > Longteng

On150-600mf5-6.3dg oshsm | sport, the SLR lens has a large aperture of 105mm (the filter is 105mm, and the maximum aperture of the lens is close to this value). It is the largest telephoto lens in its class, with the highest theoretical angular resolution and the strongest resolution when shooting long-distance targets. However, in order to realize light weight, the new150-600mmF5-6.3dgdnos | Sport is reduced to 95mm, which is the same as Sony FE 200-600mm F5.6-6.3 G OSS, and their theoretical angular resolution is the same. 150-500mf/5-6.7 diiiivc vxd, due to the shorter focal length and smaller aperture, the aperture value of 1/3 is smaller, which is naturally not as good as the first two lenses. The battle for the strongest image quality falls between Sony and Sima.

The movements of FE 200-600mm F5.6-6.3 G OSS and 150-600 mm F 5-6.3 DG DNOS | all adopt very complicated structures, especially the former, with as many as 24 blocks in 17 group and 25 blocks in 15 group. However, Yima uses the old-fashioned super multi-layer coating.

Close-up magnification

Sima = Longteng > Sony

Sigma 150-600 mmf5-6.3 dgdnos | Sports

Among the three lenses, the FE 200-600mm F5.6-6.3 G OSS is the one with the lowest magnification, but it can be equipped with a magnifying glass SEL20TC twice, which can increase the magnification by 0.4 times. However, considering the damage, flexibility and reliability of the magnifying glass to the image quality (the magnifying glass may shift after being installed for a period of time, leading to the tilt of the optical axis), it is not as good as the other two products in close range.

expansibility

Sony > Zhimo > Longteng

Due to the agreement with Sony, Sigma and Longteng do not provide or support magnifying glasses, and their expansibility is obviously not as good as that of Sony FE 200-600mm F5.6-6.3 G OSS. However, the design of Sigma 150-600 mm F5-6.3 DG DNOS | has taken into account the magnifying glass, and its L-bayonet version can be equipped with TC-141magnifying glass, which does not rule out that there will be a loose agreement in the future.

get along well with

Sony > Longteng > Shima

Compatibility issues have to be considered when using the factory lens, which directly affects lens focusing, anti-shake, distortion/dark angle/dispersion correction and many other aspects. As an original lens, Sony FE 200-600mm F5.6-6.3 G OSS naturally has no compatibility concerns. At the same time, Sony is one of Longteng's antiques. It authorized E mount to Longteng, and its compatibility is naturally better than that of Sigma.

label

To sum up, Sony FE 200-600mm F5.6-6.3 G OSS has excellent comprehensive performance, not bad image quality, and can be equipped with a magnifying glass, and the price difference is very small, with outstanding cost performance. Coupled with the reliable internal zoom structure, it is very suitable for brainless access; The advantages and disadvantages of Longteng150-500mf/5-6.7Di III VC VXD are also obvious, which is suitable for users who pursue portability. Sigma 150-600 mm F5-6.3 DG DNOS | Sports is located in the middle. If you want to shoot birds and like to shoot insects, you need better macro performance, which is the best choice among the three.