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图像文件格式详解

Photoshop Playbook: Image File Formats Explained: When to Save As What

Photoshop玩转手册图像文件格式详解:何时保存为何种类型
Photoshop PlaybookImage File Formats Explained: When to Save as What
我认为Photoshop是一个成像平台
I like to think Photoshop as an imaging platform.
因为它具有可扩展的体系结构
Because of its extensible architecture,
它能够打开上百种不同的文件格式
it’s able to open hundreds of different file formats.
实际上 它能够打开五百多种原始文件类型
In fact, it’s able to open over five hundred preparatory raw formats.
不过问题是 当你在Photoshop中打开图像以后
But, one of the questions is once you have these images opened in Photoshop,
你要把它们保存为什么格式
what do you save them out to
因为保存文件的时候 会有一堆让人困惑的选择
because you also have a dizzying rave of choices when it comes to saving
所以 我将带领你们去了解一些最通用的存储选项和文件类型
so I want to walk you through some of most popular options for saving and file types.
现在 我们在Photoshop中打开了一个多图层的文件
OK, so here we are in Photoshop with a multi-layered file
设置了透明度 并包含一个矢量路径
with a little bit of transparency, a vector shape
在界面左上角 我们可以看到
and, as we noticed in upper left
这是一个32bit 的文件
it’s a 32-bit file
我们单击“文件” 选择“存储为”
and so when we come to File, Save As,
我们可以看到一些选项
we’re gonna have some limited options,
这么多文件格式都是支持32bit文件的
there’re only so many different file formats that will support 32-bit files.
Photoshop PSD 格式是在任何时候你都能使用的格式
Photoshop PSD is the one you want to use whenever you can
它是唯一支持Photoshop所有特性设置的文件格式
it’s the only file format that supports all of Photoshop’s feature set.
因此 视频、3D、HDR
So, Video, 3D, HDR,
所有这些我能处理的特性 全部都被PSD格式支持
all the different stuff that I can do in here that’s all supported in PSD.
PSD和 大型文档格式—PSB 的唯一区别就在于
The only difference between PSD and Large Document, PSB
B 代表 大(big)
is think of “B” as “big”
PSB格式用来存储特别大的文件
for really large files, PSB is the one you want to use
它是Photoshop的关联格式 同样支持Photoshop的所有功能
still supports everything, and it’s still associated with Photoshop.
OpenEXR格式一般用于
Now, file formats like OpenEXR are great if
高动态范围图像—HDR 但该格式不支持多图层
all your doing is HDR, but you’ll notice they don’t support layers.
如果你后期不用Adobe的软件处理文件 那么TIFF格式是不错的选择
TIFF is fantastic if you’re handing off to a non-Adobe application
但请注意 TIFF格式在Photoshop和Adobe的其他软件中的集成度不是很高
but keep in mind it’s not going to be as deeply integrated with Photoshop or with other Adobe APPs.
它是很好的文件格式 使用起来很方便
It’s a great file format, it’s really handy,
只是不像PSD格式一样结合度那么好
uh… but not as deeply integrated as PSD.
现在 我们把文件改为16bit
OK so let’s switch to 16-bit
我们选择不合并(图层)
and we’re not gonna merge those
现在可以看到 我们有更多的选择了
but we’ll see that we have a lot more choices now.
在这里 我们有一些新的选项
If we come in here we got some new ones.
JPEG格式 存储后为(占用内存)更小的图像 该格式会丢弃图层
JPEGs, really great smaller image, they will discard the layers
所以我会丢失之前的无损工作流程
so I’m gonna lose that non-destructive workflow that I had.
Photoshop PDF 是特别方便的一种格式 因为它支持很多Photoshop的功能
Photoshop PDF, this one’s really handy because it supports a lot of the functionality in Photoshop,
它可以重新在Photoshop中打开
it can be opened back into Photoshop,
也可以分享给任何人
but it can also be shared with just about anybody.
所有使用Acrobat Reader软件的人都能打开一个Photoshop PDF
Anyone who has the Acrobat Reader can open a Photoshop PDF.
如果你把文件的扩展名改为PDP
If you change the file extension, the PDP,
那么它与Photoshop PDF或者Large Acrobat相关联
it was associated with Photoshop PDF or Large Acrobat.
同样 这里也有TIFF选项
And again we’ve got TIFF in here as well.
至于其他的一些格式 例如PNG
Now when it comes to something like PNG.
我们待会儿再讨论
we’ll talk about that in just a second.
现在 我们继续将文件改为8bit的
In fact, let’s go ahead and change this to 8-bit
同样 当我们选择存储的时候
and again, we’ll see that we have a lot more options
我们又有了更多的选项
when it comes to saving.
这里面的大多格式 例如GIF、JPEG、PNG
And with most of these, like GIF, JPEG, PNG
我们将使用“存储为Web所用格式”得到
we’re gonna use Save for Web.
那是存储这些格式更好的方法
That’s a much more powerful place to do this.
我可以直接在这里保存文件 例如保存为JPEG格式
I can save directly out of here and sometimes for the JPEG, I might want to,
但“存储为Web所用格式”确实是更好的方法
but Save for Web is really where you want to go for those
因为你可以看到一个很棒的全屏预览
and the reason for that is you see a nice full-screen preview.
你可以在浏览程序里预览图像
You can preview it in the browser.
你可以看到所有不同的与文件格式相关的特定选项
You can see all sorts of different options unique to the file format.
你可以去除元数据
You can strip away Metadata.
那……我们现在选择 JPEG格式
And… let’s just go between, say, a JPEG
这个格式不支持透明度
which doesn’t offer transparency,
然而 PBG-8格式 支持透明度
and PNG-8, which you see, does.
当然 我们也会选择PNG-24格式
And of course we do things like PNG-24,
它具有更高的图像位深度 和更好的分辨率
even higher bit depth, better resolution.
可以看到这里提供了很多的操作
See it has a lot of control here
这些是十分重要的 如果要将文件保存到网络使用
and this is really essential for pushing files to the web
或者用那些格式进行分享
or sharing them in those formats.
至此 你可以在Photoshop中打开各种文件
So, you can bring in just about anything
如你所见 你还可以保存各种各样的文件格式
as you can see you can save the all sorts of different formats
希望这些内容 能给你一些有用的提示
and hopefully, that gives you some great tips for your playbook
在不同的时刻使用不同的文件格式
as far as which file format you want to use and when.

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视频概述

介绍了在Photoshop软件中如何保存文件,分别阐述了常用的图像文件格式及其应用范畴,对在不同时刻将文件保存为恰当的类型提出了指导建议。

听录译者

釉佾

翻译译者

[B]看热闹_0_0

审核员

瞌睡虫儿

视频来源

https://www.youtube.com/watch?v=Wlw7miWNQH4

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