爱普生第三方相机

When people buy a Canon or Nikon camera, they often assume that they can only buy Canon or Nikon lenses. But that isn’t true. While Nikon lenses won’t work on your Canon camera, there are third-party lens manufacturers—such as Sigma, Tamron, Tokina, Samyang (also sold as Rokinon), Opteka, Yongnuo and Zeiss—that make lenses for Canon, Nikon, and sometimes Sony and other cameras. But are they any good?

人们购买佳能或尼康相机时，通常会认为只能购买佳能或尼康镜头。 但这不是事实。 虽然尼康镜头无法在佳能相机上使用，但仍有一些第三方镜头制造商(例如Sigma，腾龙，Tokina，三阳(也以Rokinon出售)，Opteka，Yongnuo和Zeiss)为佳能，尼康，有时还有Sony和其他相机。 但是它们有什么好处吗？

The short answer is that, yes, in some cases, third-party lenses are well worth buying. They can offer features that Canon or Nikon doesn’t offer, such as longer zoom lenses, faster apertures, or better bang for your buck. However, third-party lenses are not universally a good deal. Like most products, there are good ones, and incredibly cheap ones that we wouldn’t recommend.

简短的答案是，是的，在某些情况下，值得购买第三方镜头。 他们可以提供佳能或尼康没有的功能，例如更长的变焦镜头，更快的光圈或更好的性价比。 但是，第三方镜头并不是一件好事。 像大多数产品一样，有一些不错的产品，而我们不推荐的那些价格非常便宜的产品。

好的镜片很贵，没关系的人 (Good Lenses Are Expensive, No Matter Who Makes Them)

The unfortunate reality is that no matter what, good lenses aren’t cheap. There are a lot of incredibly finely made optical parts that go into a lens. There’s often a lot of manual work as well which pushes the cost up further. This is true whether you’re buying a lens from Canon or Tamron.

不幸的现实是，无论如何，好的镜头并不便宜。 镜头中有很多非常精细的光学部件。 通常还有很多手动工作，这进一步推高了成本。 无论您是从佳能还是腾龙购买镜头，都是如此。

This doesn’t mean that there aren’t price differences, though. For example, the 70-200mm f/2.8 is a very popular zoom lens. It’s perfect for a lot of different kinds of photography, from sports to portraiture. Canon’s own 70-200mm f/2.8L IS II retails for $1,949. Tamron offers a similar lens, the SP 70-200mm f/2.8 Di VC for $1,299. Sigma also makes a 70-200 f/2.8 for the same price.

不过，这并不意味着没有价格差异。 例如，70-200mm f / 2.8是非常受欢迎的变焦镜头。 从运动到肖像摄影，它非常适合各种摄影。 佳能自己的70-200mm f / 2.8L IS II零售价为1,949美元。 腾龙也提供类似的镜头， SP 70-200mm f / 2.8 Di VC ，现价$ 1,299。 Sigma还以相同的价格生产了70-200 f / 2.8。

By going with the Tamron or Sigma, you’re saving $650, but you’re still spending a lot on the lens as a whole. You’re also giving up some image quality as you can see in the video review above. If you want the absolute best lens, you have to buy the Canon; but if price is more of an issue, then the third-party lenses start to look very tempting.

通过使用腾龙或西格玛，您可以节省650美元，但从整体上看，您仍在镜头上花费很多。 您还放弃了一些图像质量，如上面的视频评论所示。 如果您想要绝对最好的镜头，则必须购买佳能。 但是如果价格更成问题，那么第三方镜头就开始显得很诱人。

This is repeated across lots of different categories. Canon’s EF 85mm f/1.4L IS is $1,599 and Nikon’s AF-S FX NIKKOR 85mm f/1.4G is $1,596, while the incredibly well regarded Sigma 85mm f/1.4 DG HSM Art is $1,199 for both Canon and Nikon. You’re not saving thousands of dollars, but you’re not saving an insignificant sum either.

在许多不同类别中重复此操作。 佳能的EF 85mm f / 1.4L IS为1,599美元，尼康的AF-S FX尼克尔85mm f / 1.4G为1,596美元，而广受好评的Sigma 85mm f / 1.4 DG HSM Art，佳能和尼康的价格均为1,199美元。 您不会省下数千美元，但是您也不会省去微不足道的款项。

The odds are if you’re looking for a common enough lens, there will be an original manufacturer option as well as a few third-party ones. The good third-party lenses will still be expensive (expect to pay somewhere north of two thirds of the price of the manufacturer’s offering), but are probably better value for money. Do a bit of research to check that you don’t lose too much image quality, but otherwise, you’re pretty safe with a good third-party lens.

如果您正在寻找足够通用的镜头，则可能会有原始制造商选项以及一些第三方选项。 好的第三方镜片仍然会很昂贵(期望支付制造商产品价格三分之二的价格)，但可能物有所值。 做一些研究，以确保您不会损失太多的图像质量，但是，否则，使用良好的第三方镜头是非常安全的。

第三方镜头为您提供更多选择 (Third Party Lenses Give You More Options)

While Canon and Nikon both have very mature lens product lines, there are still a few gaps where, if you want a certain kind of lens, you need to go third-party. The case is even more obvious with Sony’s recent mirrorless camera range. While the cameras are awesome and incredibly popular, they just don’t have every lens you could possibly need. This means a lot of people turn to third-party manufactuers.

佳能和尼康都有非常成熟的镜头产品线，但是如果您想要某种镜头，则仍然需要一些第三方。 索尼最近的无反光镜相机系列的情况更加明显。 虽然这些相机超赞且令人难以置信，但它们只是没有您可能需要的所有镜头。 这意味着很多人转向第三方制造商。

Let’s look at an example. For good astrophotography, you want a wide angle lens with a wide aperture. One thing you don’t need, however, is autofocus; it just doesn’t work at night.

让我们来看一个例子。 为了获得良好的天文摄影，您需要具有大光圈的广角镜头。 但是，您不需要的一件事就是自动对焦。 只是晚上不工作。

For these reasons, Rokinon makes some of the most popular astrophotography lenses. Their 24mm f/1.4 is just $549.00. It doesn’t have autofocus, so it’s not great for anything other than astrophotography or landscape photography, but it’s a wide angle lens with a really wide aperture. Canon’s equivalent lens, the EF 24mm f/1.4L II, since it has autofocus, is a lot more versatile; but at $1,549 it’s almost three times the price for no real improvement in image quality. Sure, you can do some street photography, but if you’re just interested in shooting the Milky Way, that isn’t a selling point.

由于这些原因，Rokinon制造了一些最受欢迎的天文摄影镜头。 他们的24mm f / 1.4仅售549.00美元。 它没有自动对焦功能，因此除了用于天文摄影或风景摄影之外，其他功能都不是什么好选择，但是它是具有非常大光圈的广角镜头。 佳能的等效镜头EF 24mm f / 1.4L II具有自动对焦功能，因此用途更加广泛。 但价格为1,549美元，几乎是真正提高图像质量的价格的三倍。 当然，您可以做一些街头摄影，但是，如果您只是想拍摄银河系，那不是卖点。

If you’re prepared to give up on certain features like autofocus or image stabilization, or buy a prime lens rather than a zoom lens, third-party manufacturers give you a lot more options. For astrophotographers, Rokinon has wide angle, wide aperture manual focus lenses available with focal lengths of 8mm, 14mm, 16mm, 24mm, and 35mm. You just can’t beat that kind of choice.

如果您准备放弃某些功能(例如自动对焦或图像稳定)，或者购买定焦镜头而不是变焦镜头，那么第三方制造商将为您提供更多选择。 对于天文摄影师，Rokinon提供广角，大光圈手动对焦镜头，焦距分别为8mm，14mm，16mm，24mm和35mm。 您就是无法击败这种选择。

当心廉价镜片 (Watch Out for the Cheap Lenses)

While so far, I’ve been focusing on the positive side of third-party lenses, there is also utter crap out there. Take this Opteka 500mm f/8 lens with a built in 2x teleconverter; it costs just $89.95. Crazy, right? What a deal!

到目前为止，我一直专注于第三方镜头的积极方面，但也有很多废话。 这款带内置2倍增距镜的Opteka 500mm f / 8镜头； 只需$ 89.95。 疯狂吧？ 太好了！

Except…no. The reason the lens is so cheap is because Opteka cut some serious corners. Not only are the image and build quality poor, but the maximum aperture of f/8 just isn’t wide enough to get the sort of shutter speeds you need to use such a long telephoto lens. Also, since it’s a manual focus lens, you won’t be able to react quickly to any situations, which makes it useless for sports or wildlife photography—the two situations where photographers normally use long telephoto lenses. About the only thing this lens is good for is taking bad photos of the moon. Even at less than $90, it’s a ripoff.

除了……不。 镜头如此便宜的原因是因为Opteka犯了一些严重的错误。 不仅图像和结构质量差，而且f / 8的最大光圈还不够宽，无法获得使用这么长的长焦镜头所需的快门速度。 另外，由于它是手动对焦镜头，您将无法对任何情况做出快速React，这使它在体育或野生动物摄影中无用，这是摄影师通常使用长焦镜头的两种情况。 这种镜头唯一的好处就是对月球拍摄不好的照片。 即使价格不到90美元，这也是一个骗子。

Similarly, you can get a Yongnuo 50mm f/1.8 for $49.99. That’s super cheap and it’s not an awful lens, but a genuine Canon EF 50mm f/1.8 is only $125. And for the extra $75, you get much better build, optical, and autofocus quality.

同样，您可以以49.99美元的价格购买Yongnuo 50mm f / 1.8 。 那是超级便宜，而且不是可怕的镜头，但是真正的佳能EF 50mm f / 1.8仅售125美元。 额外支付75美元，您将获得更好的构建，光学和自动对焦质量。

When it comes down to it, good third-party lenses offer you more options at competitive (although still expensive) prices; bad third-party lenses aren’t worth the cost of shipping.

归根结底，优质的第三方镜头可为您提供更具竞争力(尽管仍然很昂贵)的价格的更多选择。 劣质的第三方镜片不值运费。

As long as you buy from a reputable third-party manufacturer like Sigma, Tamron, Tokina, Samyang/Rokinon, or Zeiss, you’re not likely to go too far wrong. On the other hand, if you buy from the likes of Opteka or Yongnuo, you’re probably going to be disappointed. In all cases, the best thing to do is research the lens you want to buy before spending any money.

只要您从Sigma，Tamron，Tokina，Samyang / Rokinon或Zeiss等著名的第三方制造商那里购买产品，您就不会出错。 另一方面，如果您从Opteka或Yongnuo等商店购买商品，您可能会感到失望。 在所有情况下，最好的办法是在花任何钱之前先研究要购买的镜头。

翻译自: https://www.howtogeek.com/340898/are-third-party-camera-lenses-worth-buying/

爱普生第三方相机