您可能已经在电视广告上看到过HDR一词，或者在您的(HDR)iPhone 相机(iPhone camera)上看到过这个符号。HDR 代表高动态范围(high dynamic range)，意味着可以显示照片和图像以显示来自高对比度区域的更多细节。
换句话说，HDR可以帮助您拍摄质量更好、细节更丰富的照片(better quality, more detailed photos)，前提是您使用得当。HDR需要更多的构图，而不仅仅是指向和拍摄——但在本文的结尾，您将了解HDR是什么以及如何在 iPhone 上使用它。
什么是 HDR？(What Is HDR?)
当您使用 iPhone 拍照时，您通常会专注于一个区域。相机将调整曝光以最好地显示焦点周围区域的细节，这会导致照片的某些部分曝光不足或曝光过度。
iPhone 上的HDR(HDR)通过拍摄多张照片然后合并它们来弥补这一点。一张照片曝光过度，一张曝光不足，一张是两者的平衡。通常，会拍摄五张或更多照片以正确显示图像中的所有细节。
根据经验，拍摄和合并的照片越多，细节就越丰富。当然，这需要相机保持静止并且拍摄对象静止。由于在HDR(HDR)中拍摄照片所需的时间较长，因此运动模糊是一个难以克服的严重障碍。
不同的摄影应用程序以不同的方式处理 HDR(Different photography apps process HDR differently)。但是，iPhone 具有内置的HDR功能。您的 iPhone 会自动检测何时使用HDR。如果您想在 iPhone 上关闭自动HDR，可以从设置菜单中进行。
看看下面的两张照片。顶部的图像不使用HDR。虽然你可以透过窗户看到，但天空的蓝色被光线冲掉了。底部的图像使用HDR，使明暗区域的清晰度更高。
什么时候应该使用 HDR？(When Should I Use HDR?)
拍摄风景和户外场景时，最好在 iPhone 相机上激活HDR 。强烈(Harsh)的阳光通常难以拍摄，因为它往往会冲掉颜色，但HDR可以帮助您即使在中午也能拍摄出充满活力的照片。
如果您喜欢在黄金时段(Golden Hour)拍摄照片，HDR将使夜晚的光线更加令人印象深刻，尤其是在您在昏暗的区域拍摄时。
然而，HDR并非一直都是正确的选择。由于运动模糊，运动物体在HDR(HDR)中效果不佳，如果您尝试拍摄剪影或用照片营造某种氛围，多重曝光可能会破坏您尝试设置的情绪。
对于普通人来说，HDR是一项特殊功能。你只会在某些时候需要它。
如何打开 HDR(How To Turn On HDR)
打开你的 iPhone 相机。在屏幕顶部，您会看到一个HDR图标。点击它，您将获得三个选项：Auto、On或Off。鉴于HDR的性质，最好将其关闭，除非您打算使用它。
例如，如果您想快速拍摄某物的照片，您不想等待所有的图像处理。你可能会错过你的投篮机会。自动 HDR(Auto HDR)让抓拍照片变得更加困难。最好了解HDR选项在哪里，并在需要时为那些特定实例打开它。
您还应该注意，当最终图像完成时，iPhone 倾向于合并照片并删除其他图像。如果您想保留照片的非 HDR 版本，则需要在“设置”(Settings)中启用此功能。
为此，请转到“设置”(Settings) > “相机”(Camera )并向下滚动。在选项列表的底部，您将看到两个滑块：自动 HDR(Auto HDR)和保持正常照片(Keep Normal Photo)。根据您的喜好打开或关闭这些滑块。
HDR 照片往往比标准照片大(larger than standard photos)，因此如果手机驱动器上的存储空间有限，请记住这一点。
既然您知道iPhone 相机上的HDR是什么以及如何使用它，那就出去尝试一下吧。在正确的情况下使用它是一项很棒的功能，并且可以产生一些真正值得 Instagram 的照片。
你在 iPhone 上使用 HDR 吗？为什么或者为什么不？请在下面的评论中告诉我们。(Do you use HDR on your iPhone? Why or why not? Let us know in the comments below.)
What Is HDR On An iPhone Camera?
You may have seen the term HDR on a televіsion advеrtisement or seen the symbol on yоυr iPhone camera. HDR stands for high dynamic range and means that photos and images can be displayed to show greater detail from high-contrast areas.
In other words, HDR can help you take better quality, more detailed photos, provided you use it correctly. HDR requires a bit more composition than just pointing and shooting–but by the end of this article, you will understand what HDR is and how to use it on your iPhone.
What Is HDR?
When you take a photo with your iPhone, you typically focus on one area. The camera will adjust the exposure to best show the details in the area around the focus, which results in parts of the photo being either under-exposed or overexposed.
HDR on your iPhone compensates for this by taking multiple photos and then merging them. One photo will be over-exposed, one will be under-exposed, and one will be a balance of the two. Often, there will be five or more photos taken to properly show all of the detail in an image.
As a rule of thumb, the more photos that are taken and merged, the greater the detail will be. Of course, this requires the camera to be held still and the subject to be stationary. Due to the extended time required for taking a photo in HDR, motion blur is a serious obstacle that can be difficult to overcome.
Different photography apps process HDR differently. However, the iPhone has built-in HDR capabilities. Your iPhone will automatically detect when to use HDR. If you wish to turn off automatic HDR on your iPhone, you can do so from the settings menu.
Take a look at the two photos below. The image on the top does not use HDR. While you can see through the window, the blue of the sky is washed out due to the light. The image at the bottom uses HDR, resulting in better clarity for both light and dark areas.
When Should I Use HDR?
It’s best to activate HDR on your iPhone camera when photographing landscapes and outdoor scenes. Harsh sunlight is often difficult to shoot in due to the way it tends to wash out colors, but HDR can help you take vibrant pictures even in the middle of the day.
If you’re a fan of shooting photos during Golden Hour, HDR will make that evening light even more impressive, especially if you’re shooting in dim areas.
However, HDR isn’t the right choice all the time. Moving objects do not turn out well in HDR due to motion blur, and if you’re trying to shoot a silhouette or create a certain atmosphere with a photograph, the multiple exposures can ruin the mood you’re trying to set.
For the average person, HDR is a specialized feature. You will only need it at certain times.
How To Turn On HDR
Open your iPhone camera. At the top of the screen, you’ll see an icon that says HDR. Tap that, and you’re given three options: Auto, On, or Off. Given the nature of HDR, it’s best to turn it off except when you intend to use it.
For example, if you want to take a quick photo of something, you don’t want to wait for all of the image processing. You might miss your shot. Auto HDR makes it harder to grab those snap photos. It’s better to instead learn where the HDR option is and turn it on for those specific instances when you need it.
You should also note that the iPhone tends to merge photos and delete the other images when the final image is complete. If you would like to keep the non-HDR version of a photo, you will need to turn this on in Settings.
To do this, go to Settings > Camera and scroll down. At the bottom of the list of options, you will see two sliders: Auto HDR and Keep Normal Photo. Turn these sliders on or off to suit your preferences.
HDR photos tend to be larger than standard photos, so keep that in mind if you have a limited amount of storage on your phone’s drive.
Now that you know what HDR is on an iPhone camera and how to use it, go out and experiment. It’s a great feature to use in the right situations and can result in some truly Instagram-worthy photos.
Do you use HDR on your iPhone? Why or why not? Let us know in the comments below.
