佳能镜头与相机的通信协议
The biggest advantage DSLRs have over smartphones and compact cameras is swappable lenses that suit what you’re trying to shoot. Whether you want a lens that can blur the background for great portraits or something that lets you zoom in close to the action, there will be one available.
数码单反相机相对于智能手机和袖珍相机的最大优势是可互换镜头，适合您要拍摄的镜头。 无论您是想要使背景虚化以拍摄精美人像的镜头，还是要使镜头靠近动作放大的镜头，都有一款可用。
Lenses, however, are expensive. With so many choices, you need to be make sure you’re getting the right one for your needs. A well looked-after lens will last for years so it shouldn’t be a throwaway choice.
但是，镜片很昂贵。 有这么多种选择，您需要确保找到适合自己需求的正确选择。 精心照管的镜头将持续数年，因此它不是一个随意选择。
If you’re already an experienced photographer, this article probably isn’t for you. I’m not going to be recommending any super expensive, professional quality glass. Instead, I’m going to look at some of the best options for beginner and intermediate photographers who are looking to shoot new things.
如果您已经是一位经验丰富的摄影师，那么这篇文章可能不适合您。 我不会推荐任何超贵，专业品质的玻璃。 相反，我将为寻求拍摄新事物的初学者和中级摄影师提供一些最佳选择。
Before diving in, it’s important to note that Canon has two different lens mounts: EF-S and EF. EF-S lenses will only work on crop sensor cameras like the entry-level Canon EOS Rebel T6. EF lenses will work on all Canon’s DSLRs.
在潜水之前，必须注意佳能有两种不同的镜头座：EF-S和EF。 EF-S镜头仅适用于入门级佳能EOS Rebel T6等作物传感器相机。 EF镜头可在所有佳能DSLR上使用。
如果要拍摄人像 (If You Want to Shoot Portraits)
For portraits, there are two things you need: a focal length of between about 50mm and 100mm, and a wide aperture. This focal length range gives you natural looking portraits without too much distortion and the wide aperture lets you blur the background to nothing.
对于人像，您需要两件事 ：焦距大约在50mm至100mm之间，并且具有较大的光圈。 此焦距范围使您的人像看起来自然而没有太多失真，大光圈使背景虚化。
The Canon EF 50mm f/1.8 STM fits both these criteria perfectly, and at $125 is an absolute steal. There are very few lenses this good, available that cheap. I still use the one I bought when I first started portrait photography regularly.
佳能EF 50mm f / 1.8 STM完全符合这两个条件，125美元的价格绝对物有所值。 这样好的镜头很少，便宜的镜头可用。 我仍然会定期使用人像摄影功能，但仍会使用我购买的那种。
如果您想拍摄运动或野生动物 (If You Want to Shoot Sports or Wildlife)
Sports and wildlife photography are technically very similar: you want close up photos that show the action, but, whether because you’re stuck on the sideline or can’t sneak up on a wild animal, you physically can’t get very close to your subject. To overcome this, you need a telephoto lens.
体育和野生动植物摄影在技术上非常相似 ：您想要特写照片以显示动作，但是，无论是因为被困在边线还是无法潜入野生动物，您实际上都无法与之接近你的主题。 为了克服这个问题，您需要一个远摄镜头。
The $299 Canon EF-S 55-250mm F4-5.6 IS STM telephoto lens is one of the cheapest telephotos you can buy. At 55mm, it has an aperture of f/4, and when zoomed in to 250mm, it has an aperture of f/5.6. For sports and wildlife photography during the day, this isn’t a problem. This lens also has image stabilization, which makes it easier to get shots in low light, although the narrow aperture will mean you have quite a slow shutter speed.
售价299美元的佳能EF-S 55-250mm F4-5.6 IS STM长焦镜头是最便宜的长焦镜头之一。 在55mm时，其Kong径为f / 4，在放大至250mm时，其Kong径为f / 5.6。 对于白天的体育运动和野生动物摄影来说，这不是问题。 该镜头还具有防抖功能，即使在狭窄的光圈下您的快门速度也很慢，因此更容易在弱光下拍摄。
The $599 Canon EF 70-200mm f/4L USM is a big step up in terms of image quality, and the aperture remains at f/4 throughout the whole range, but it costs a lot more and doesn’t have image stabilization. It is definitely the better lens, though, and if your budget can stretch to it, it’s worth the investment.
售价599美元的佳能EF 70-200mm f / 4L USM在图像质量方面有了很大的提高，光圈在整个范围内都保持在f / 4，但价格更高，并且没有图像稳定功能。 不过，它绝对是更好的镜头，如果您的预算可以扩展，那么值得进行投资。
如果要拍摄风景 (If You Want to Shoot Landscapes)
Although you can shoot landscapes with any lens, most professional photographers use a wide angle for the simple reason that you can get a lot more land in your photo. It’s a lot easier to show the size and beauty of the mountains with a wide angle than a telephoto.
尽管您可以使用任何镜头拍摄风景 ，但是大多数专业摄影师使用广角镜头的原因很简单，因为您可以在照片中获得更多的土地。 与远摄相比，用广角显示山脉的大小和美景要容易得多。
The Canon EF-S 10-18mm f/4.5-5.6 IS STM wide angle zoom lens, at $279, is a great option. On a crop sensor camera, it gives you the equivalent of a 16-29mm lens on a full frame camera. That’s a perfect zoom range for landscapes. Although f/5.6 is quite a narrow maximum aperture, for a landscape lens it doesn’t matter as much; you’ll normally be using an aperture of between f/8 and f/16 anyway.
佳能EF-S 10-18mm f / 4.5-5.6 IS STM广角变焦镜头(279美元)是一个不错的选择。 在农作物传感器相机上，它相当于全画幅相机上的16-29mm镜头。 这是风景的理想变焦范围。 尽管f / 5.6的最大光圈非常窄，但是对于风景镜头而言，它并不重要。 无论如何，您通常会使用介于f / 8和f / 16之间的光圈。
如果您想携带相机旅行 (If You Want to Travel With Your Camera)
Smartphones are rapidly taking over as the most popular cameras because that they are small, easy to carry, and always with you. You can take much higher quality photos with a DSLR, but they are too big and bulky to carry around on a regular basis. Part of this is the camera, but it’s also the lens.
智能手机由于体积小，易于携带并且始终与您在一起，因此Swift成为最受欢迎的相机。 您可以使用DSLR拍摄更高质量的照片，但是它们太大且笨重，无法定期携带。 其中一部分是相机，但它也是镜头。
Canon makes two great pancake lenses—they’re called pancake lenses because they’re thin and flat—to solve just this problem. The $149 Canon EF-S 24mm f/2.8 STM and the $179 Canon EF 40mm f/2.8 STM are both great lenses with a super low profile. They are both less than an inch long. This means that compared to a regular lens, they add almost no weight or bulk.
佳能制造了两种出色的煎饼镜片-因为它们很薄且很平而被称为煎饼镜片，所以可以解决这个问题。 149美元的佳能EF-S 24mm f / 2.8 STM和179美元的佳能EF 40mm f / 2.8 STM都是超低调的出色镜头。 它们都小于一英寸长。 这意味着，与普通镜头相比，它们几乎没有重量或体积。
If you’re planning to do a lot of street or travel photography, one of these two lenses is perfect.
如果您打算进行很多街头摄影或旅行摄影 ，那么这两种镜头中的一种非常适合。
You don’t have to spend thousands of dollars to get good, versatile lenses for your DSLR. There is some great glass available from as little as $125. Just make sure to choose the lens that’s right for you.
您不必花费数千美元就可以为DSLR获得优质，多功能的镜头。 有一些很棒的玻璃杯，最低只要$ 125。 只需确保选择适合您的镜头即可。
翻译自: https://www.howtogeek.com/298461/what-lenses-should-i-buy-for-my-canon-camera/
佳能镜头与相机的通信协议
