Which sub factory out of the 70 200 f2 8 spec lens is a little better

The Sigma APO 70-200mm F II EX DG Macro (Black) and the Tamron AF 70-200 F Di LD (IF) can also be considered, both of which are very good side lenses, both with a macro magnification ratio of about 1:3 and a similar aperture structure (9 blades). **On tamron is cheaper, both around 6000.

For more information about the lens, please refer to it.

The evaluation results mainly look at the resolution, angular loss and chromatic aberration, and if there are samples, you can see if you like the imaging clarity and color of the samples.

A brief review of the Sigma APO 70-200mm F II EX DG MACRO and Nikkor AF-S 70-200mm F G IF-ED VR lenses is attached here for reference

Distortion: The two are relatively close, and neither is obvious to the naked eye, with pincushion distortion with Nikkor lenses and barrel-to-pincushion distortion with Sigma lenses.

Angular loss of light: The two are relatively close, about at the maximum aperture and the longest focal length, but not noticeable after f 4.

Resolution: Nikkor lenses are high, with all focal lengths in the "excellent" class (above 1950 lw pH), even close to the ultimate resolution of APS-C sensors, and Sigma lenses can reach "excellent" level except for the maximum aperture in the "very good" level (close to 1950 lw ph), and the best aperture of both lenses is at f.

Dispersion: The two are relatively close, both are relatively good, Nikkor full focal length range is in the pixel range, the mean is about pixels, and the sigma full focal length range is also in the pixel range, the mean is about pixels.

The comprehensive evaluation of the two lenses is as follows:

Nikkor AF-S 70-200mm F G IF-ED VR: Optical quality star, mechanical performance star, cost performance star.

Sigma APO 70-200mm F II EX DG Macro: Optical quality star, mechanical performance star, cost performance 5 stars.

It seems that Xiao Hei can achieve more than 80% of the performance of Xiao Bamboo Cannon at half the price, so I personally think Xiao Hei is a good choice. ^

Supplement (my hi can't be sent, so reply here).

I heard that Tenglong's lens (Xiaolong Cannon) is also very good, and it is cheaper than Xiaohei, but I can't find out the specific parameters, so I don't dare to talk nonsense. The lens of the deputy factory is definitely worse than the small bamboo cannon, and I can't be sure of it compared to the small steel cannon, I'm really embarrassed.

1. The weight of the lens is not the same.

The weight of the lens of the first generation is about 1310 grams; The lens of the second generation weighs about 1490 grams; The lens of the 3rd generation weighs about 1480 grams.

2. The compensation effect of hand shake is different.

The first generation has no hand shake tease compensation effect;

Hand shake compensation effect of 2nd generation: approx. 4 levels (based on Canon test standards);

Hand shake compensation for the 3rd generation: Approximate Senna (based on CIPA test standards, 200mm focal length, when using EOS-1D x Mark II).

3. The lens structure is different.

The lens structure of the first generation is 18 elements in 15 groups; The lens structure of the second generation is 23 elements in 19 groups; The lens structure of the 3rd generation is 23 elements in 19 groups.

4. The maximum magnification *3 is different.

The maximum magnification of the first generation *3 is about magnification; The 2nd and 3rd generations are about doubles.

The differences between Canon's lenses are as follows:

1. Lens structure: 18 groups of 23 lenses in the first generation, 23 lenses in 19 groups of the second generation (5 UD lenses, 1 fluorite lens), the maximum magnification of socks: one generation, two generations.

2. Minimum focusing distance: 140cm for the first generation, 120cm for the second generation, and 100cm for the third generation.

3. Weight: 1570g for the first generation, 1490g for the second generation, 1380g for the second generation.

4. Dimensions: the first generation, the second generation 89 199mm, the second generation 89 192mm

The specifications of the lens are ......The focal length of this type of lens is 70mm-200mm, and the aperture of this type of lens can be said to be the same ...... specifications of this type of lensThere is no question of who is better than who......

As for the question of who is better with this specification of lens, it is a matter of opinion......Theoretically, the original lens is best ......The best compatibility, the most stable work, the best performance, and the best picture quality ......That's why many people will do something about the original plot ......But at present, the sub-factory lens has done a very good job in these aspects, and it is definitely not worse than the original ......Even, the analogue's lens has been boldly innovated in many fields, reaching a high level of ...... that the original lens does not have

Once, the biggest problem with the sub-factory lens was the compatibility problem......However, this problem is not much of a problem now......In terms of compatibility, the sub-factory lenses have been done very well, and there are basically no problems. Users can use it with complete peace of mind.

So, no matter which one it is, it's very ......It's the best shot, after all!

Tenglong's reputation is good, but there are a lot of small problems, and I personally suggest that since you have to use such a good lens, buy the original one.

Nikon BAIAF-S 70-200mm F ED VR II (hereinafter referred to as DU.)

Called the big bamboo cannon. There are three main differences between ZHI) and AF-S 70-200mm F ed VR (hereinafter referred to as Xiaozhu Cannon): DAOed lenses.

Zoom, constant aperture, 2nd generation.

70-200mm is the focal length, which stands for constant aperture.

Although the zoom ratio of the 18-200 lens is large, the specifications are much lower than the 70-200 when you look closely.

First of all, look at the aperture, the longer the focal length of the lens, the more difficult it is to make the aperture larger. The aperture of 18-200 is mostly a floating aperture, while the 70-200 aperture is generally a constant aperture. The larger the aperture, the larger the diameter of the optical glass, and the cost naturally increases.

Secondly, looking at the image field, the current 18-200 are all APS-C special lenses, and the 70-200 is a full-frame lens. Similarly, large image fields require larger diameter optical glass.

Finally, because the structure of a lens with a relatively small zoom such as the 70-200 is relatively simple, and it is easy to achieve a more ideal image quality through a less complicated process, the lens of this specification is mostly positioned as a professional lens. Professional users are less careful**, so they can invest heavily in special lenses (fluorite, low dispersion, etc.) to improve the quality of the lens.

The above two points determine that the current 18-200 on the market is much cheaper than 70-200. And if any manufacturer can design a full-frame, constant aperture 18-200 lens, and invest all the special technology that can be invested to improve the quality, it will inevitably be a sky-high price. At present, such a lens does not exist, and it can be used as a reference for Canon's 28-300, a full-frame large-zoom ratio lens with professional-grade quality, and it has not yet achieved a constant large aperture** It has been as high as 17000-18000 yuan.

There is a big difference between workmanship and material, no matter what brand of SLR camera, the lens of the focal length of 70-200mm is a classic lens, and it is also a lens that major manufacturers have spent a lot of effort to develop, and the 18-200 lens is just to cater to most entry-level and intermediate users who do not need to change the lens frequently, and want to "go to the world with one lens" and design a lens, so to speak, the lens can change the focal length is not the larger the better, on the contrary, the smaller the focal length change, the smaller the optical distortion of each focal length. Therefore, the prime head imaging is the sharpest, and the lens with about three times the focal length is also ideal. You can check that the vast majority of well-evaluated lenses do not have a zoom greater than four times.

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Seeing the aperture is basically the same as the difference in aperture.

The second generation has the meaning of lens with image stabilization.

1. The former is the second generation, and the latter is the first generation; 2. The second generation has more anti-shake; 3. The second generation also added an extra UD lens, the second generation is 5UD, and the first generation is 4UD; 4. The second generation also has an extra fluorite lens (equivalent to 2 UD lenses).

That's all the difference, the other parameters are basically the same.