1. 佳能EF28—90镜头
18-55好一些，练手正合适。各个焦段、各个光圈快门的组合都要尝试一下。501.8也是不错的EFs镜头，成像相对很好，最主要是很便宜，才600多块钱。
2. 佳能ef28-135镜头
佳能28-80镜头，采用微型马达变焦，是佳能胶片相机时代的入门镜头之一，其成像素值一般
这镜头是当年的镜皇啊。
一般用80端比较多，但28端在全开光圈的情况下也很锐，以后升级到全副之后这个镜头一定很有用。拍人像不是白给的。色彩和135L有一比，层次丰富，过渡自然，而且焦外比135L还要柔和
这镜头我感觉色彩还原自然，也是公认的最具德味的镜头。
3. ef284
电脑不仅能帮助我们快速完成重复性的工作，而且提供了一种休闲娱乐的方式。学电脑能够快速入门是每个新手梦寐以求的事情，但是不是每个人都能快速入门的。但是如果定制好合理计划，循序渐进，就会收到非常好的效果。
电脑的组成
一个完整的电脑由软件和硬件组成。硬件主要包括我们常见的鼠标，键盘，显示器，主机和各种储存介质，电脑的硬件如同人的躯干和四肢；而软件如同人的大脑和神经系统，软件在硬件的基础上才能工作。
基础入门
启动电脑
电脑启动就是我们常说的“开机”，也是启动操作系统的过程。开机具有一定的顺序：
1、打开显示器
2、打开主机
3、开机自检
4、启动成功
通过上述步骤启动电脑，叫做冷启动，是常规的开机步骤。此外，在特殊情况下，我们还可以通过下面两种方式启动电脑。
热启动：是指电脑处于开机的状态下，通过【开始】菜单中的【重新启动|】命令对电脑进行重新启动。
复位启动：当电脑在运行过程中出现异常而不能运行，且采用热启动失效时，可以采用复位启动方式重启电脑，方法是按下主机箱上的【复位】按钮即可。
关闭电脑
使用完电脑后，需要将其关闭。电脑的关机顺序与开机顺序正好相反。即先关主机电源，然后逐一关闭外部设备的电源。遵循正确的开关机顺序可延长电脑的使用寿命。
正确的关机方法为：在系统桌面上单击【开始】按钮，在弹出的【开始】菜单中单击【关机】按钮，电脑将停止所有程序并退出操作系统，接着系统将自动断开主机电源，然后再依次关闭显示器、音箱等外接设备即可。
如何使用键盘
键盘是用于操作计算机设备运行的一种指令和数据输入装置，也指经过系统安排操作一台机器或设备的一组功能键（如打字机、电脑键盘）。
电脑键盘由功能键区、主键区、编辑键区，数字键区和小键盘区5个区组成。其中常用操作打字是在主键区完成的。
键盘是最常用也是最主要的输入设备，通过键盘可以将英文字母、汉字、数字、标点符号等输入到计算机中，从而向计算机发出命令、输入数据等。
如何使用鼠标
鼠标，是计算机的一种外接输入设备，也是计算机显示系统纵横坐标定位的指示器，因形似老鼠而得名（港台作滑鼠）。其标准的称呼应该是“鼠标器”，英文名“Mouse”。鼠标的使用是为了使计算机的操作更加简便快捷，来代替键盘那繁琐的指令。
一般的鼠标上有左键，右键和滑轮三个部分。
计算机的储存介质
计算机的储存介质有：硬盘、U盘、光盘和软盘等。
硬盘
电脑硬盘是计算机最主要的存储设备，硬盘一般分为固态硬盘（SSD）和机械硬盘（HDD）两种。固态硬盘读写速度更快，但存储容量较小，机械硬盘存储容量较大但同容量大小，固态硬盘价格也更昂贵。
U盘
U盘是USB(USB flash disk)盘的简称，据谐音也称“优盘”。U盘是闪存的一种，故有时也称作闪盘。U盘与硬盘的最大不同是，它不需物理驱动器，即插即用，且其存储容量远超过软盘，极便于携带。
软件操作
电脑软件（Computer Software）是指计算机系统中的程序及其文档。一般来讲软件被划分为系统软件、应用软件，系统软件为计算机使用提供最基本的功能，可分为操作系统和支撑软件，其中操作系统是最基本的软件，常见的操作系统包括为微软的Windows系统。
软件的基础操作
软件的使用包括软件的下载、安装和卸载：
软件的下载
1、浏览器下载
2、软件官网下载
3、电脑管家或360软件管家等下载软件（下图为360软件管家）
软件安装
第一种就是你下载下来的是.exe文件的应用程序，这种程序一般都是安装包，就是你双击之后，会进入安装界面；第二种就是不需要安装的，你下载下来的是一个压缩文件，你只需要解压就可以使用。
电脑软件安装过程中特别要逐一择安装设置（安装盘位）的选择、流氓软件选项勾选等。
软件的卸载
控制面板—程序和功能—找到要卸载的软件—右击卸载
软件的启动
电脑软件的启动方法一般有双击，右击-打开或从开始菜单单击打开
1、一般安装软件后会在桌面创建快捷方式，直接打开。
2、若桌面没有快捷方式，可以在电脑左下角的“开始”—“程序”里面打开。
3、若“程序”里面也没有，可以打开软件的安装位置打开。
说明：第三种方法是按默认的安装路径找到的软件安装文件夹打开程序的，实际情况可以根据软件的具体安装路径选择打开。
应用软件的操作
文件操作包括如何操作打开，关闭、删除、移动、重命名和编辑文件
文件打开
文件打开方式见“如何启动软件”部分
常见不同后缀、格式文件打开方法：
.txt .doc .docx .obt 这些格式可以用微软的office打开，或者用wps打开。
mp3格式文件可以使用使用电脑自带的Media Player播放器或者其他的音乐播放器。
mp4、mpg. mpeg.等文件可以使用电脑自带的电影和电视功能或者其他视频软件打开。
文件关闭
一般软件点击右上角的“×”，再点击“确认”，即可关闭文件
文件删除
1、选中文件-右击-删除
2、选中文件-按“delete”键，即刻删除
文件移动
方法一：长按鼠标左键选中并拖动鼠标移动文件到想要的地方
方法二：右击鼠标—剪切-打开需要移动的地方-右击粘贴
文件重命名
方法一：选中文件—右击—重命名
方法二：鼠标左击—键盘F2，即可进行重命名
文件管理基础知识
硬盘分区
电脑中的文件都存放在硬盘中，而新买回来的硬盘相当于一张白纸 ，为了能够更好地使用它，需要在，白纸上划分出若干小块。然后再打上格子。硬盘分区就是这个道理，在安装操作系统之前，需要进行硬盘分区和格式化，然后才能投入使用。对硬盘进行分区后，各个分区独立使用，互不影响。在操作系统中每个分区都用一个盘符表示，如本地磁盘（C）、本地磁盘（D）等。
存储路径
文件的存储路径，就是文件在电脑硬盘中的存储位置，由硬盘分区、文件夹和子文件夹构成。其中硬盘分区的盘符为路径的第一项，是第一级目录，也叫做根目录，后面紧跟冒号和斜线（：/），文件夹和子文件夹中间则以斜线（/）隔开。
如何使用浏览器
主要介绍如何使用浏览器（以及搜索引擎）查找资料。
1、首先在浏览器中输入搜索引擎的网址，以百度为例：
2、然后就进入搜索引擎所在网页，这样才能进行搜索：
3、之后在搜索栏中输入搜索内容，可以是词语、短语也可以是句子：
4、最后点击百度一下进行搜索：
5、然后就可以得到想要的信息了：
电脑的日常维护
日常注意事项
电脑的五大要害：静电、灰尘、水、震荡、病毒是电脑的五大要害
1、防静电：防止静电损坏电脑各部分电子原件，处理办法是将电脑机箱外壳接地，尽量使用三脚电源插头。
2、防尘：防止灰尘进入电脑机箱内，使用时保持环境清洁，并定期清理电脑主机内的灰尘。
3、防水：防止液体进入电脑的任何部分，保持室内通风。不要将电脑放在湿度较大的房间使用。
4、防震：在使用的过程要防止对电脑的震荡，应将电脑平稳放置在电脑桌上，以防不小心摔落等
5、防病毒：病毒是电脑的一大要害，在日常使用中要防止病毒的进入，需要给电脑安装防病毒软件，并经常更新病毒库，经常给电脑杀毒。
显示器维护
液晶显示器最大的禁忌在于触摸液晶面板。液晶面板表面有专门的涂层，这层涂层可以防止反光，增加观看效果。而很多用户不知道这点，总是习惯于用手去摸液晶屏幕，殊不知人手上有一定的腐蚀性油脂，会轻微的腐蚀面板的涂层，时间长了会造成面板永久性的损害。这种被损坏的面板在使用中会有斑驳陆离的感觉。另外，有些人喜欢用手去压面板，觉得很有意思。这绝对是个恶劣的习惯，这样做会导致坏点和暗斑，这可是永久性的损害，绝不可修复的！
主机维护
在电脑运行过程中，机器的各种设备不要随便移动，不要插拔各种接口卡，也不要装卸外部设备和主机之间的信号电缆。如果需要作上述改动的话，则必须在关机且断开电源线的情况下进行。
不要频繁地开关机器。关机后立即加电会使电源装置产生突发的大冲击电流，造成电源装置中的器件被损坏，也有可能造成硬盘驱动突然加速，使盘片被磁头划伤。因此，这里我们建议如果要重新启动机器，则应该在关闭机器后等待10秒钟以上。在一般情况下不要擅自打开机箱，如果机器出现异常情况，应该及时上报。
数据存放在不同分区，减少磁头对某一扇区的经常读写，导致这一扇区的损坏。 建议你使用不同的媒介定期对你的重要数据进行备份，并存放在不同的地方。一个文件可以在备份盘上放一份，可以打印一份，可以刻录成光盘。
键盘、鼠标的日常维护
（1）保保持清洁 过多的灰尘会给电路正常工作带来困难，有时造成误操作，杂质落入键位的缝隙中会卡住按键，甚至造成短路。我们在清洁键盘时，可用柔软干净的湿布来擦拭，按键缝隙间的污渍可用棉签清洁，不要用医用消毒酒精，以免对塑料部件产生不良影响。清洁键盘时一定要在关机状态下进行，湿布不宜过湿，以免键盘内部进水产生短路。
(2)不将液体洒到键盘上 一旦液体洒到键盘上，会造成接触不良、腐蚀电路造成短路等故障，损坏键盘。所以我们一般不要边喝茶边坐在电脑前,这样一不小心茶可能就洒在键盘上.
电脑病毒防护
电脑一旦感染了病毒，就会出现很多症状。导致系统性能的下降，影响用户的使用，甚至造成灾难性的后果。电脑在日常的使用过程中要定期进行病毒查杀，防患于未然。常用的电脑杀毒软件有360，金山毒霸和电脑管家等等。以金山毒霸为例介绍电脑杀毒的过程。
1、打开程序主界面
2、选择杀毒方式
3、开始杀毒。程序对磁盘内容自动进行扫描，如果检测到病毒会自动进行清除，并将结果显示在扫描栏中。
4、除此之外还可以对特点的盘进行杀毒。
%3Chowto_content%3E[{"type":"paragraph","attrs":{"is_abstract":true},"children":[{"type":"text","text":"电脑不仅能帮助我们快速完成重复性的工作，而且提供了一种休闲娱乐的方式。学电脑能够快速入门是每个新手梦寐以求的事情，但是不是每个人都能快速入门的。但是如果定制好合理计划，循序渐进，就会收到非常好的效果。","id":""}],"text":"","id":"doxcn8cU4MA2QEaii2J3ZNVoktc"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"电脑的组成","id":""}],"text":"","id":"doxcnmA2s4woYC2yUmIQvf9mQUe"},{"type":"image","attrs":{"height":261,"note":[{"type":"text","text":"电脑的组成","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/87d69d2955f648feac3ab47ccbf71e3d","width":336},"text":"","id":"doxcnqs8UM2owm4IMYdbeOlkAkh"},{"type":"paragraph","children":[{"type":"text","text":"一个完整的电脑由软件和硬件组成。硬件主要包括我们常见的鼠标，键盘，显示器，主机和各种储存介质，电脑的硬件如同人的躯干和四肢；而软件如同人的大脑和神经系统，软件在硬件的基础上才能工作。","id":""}],"text":"","id":"doxcnOm0OCuOMmoM4QNGA9SO8Lb"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"基础入门","id":""}],"text":"","id":"doxcn4cgggKKYQ4aiSYuqtsQo6c"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"启动电脑","id":""}],"text":"","id":"doxcnaoiIIwmA0msCOScbmWVnff"},{"type":"paragraph","children":[{"type":"text","text":"电脑启动就是我们常说的“开机”，也是启动操作系统的过程。开机具有一定的顺序：","id":""}],"text":"","id":"doxcnyse2oUqkA0QW6q5OiHDGyf"},{"type":"paragraph","children":[{"type":"text","text":"1、打开显示器","id":""}],"text":"","id":"doxcnQ20eGOmWYyIGh1tlEscKwf"},{"type":"image","attrs":{"height":418,"note":[{"type":"text","text":"启动电脑","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/728c3e972f794f9ba5ae35fc2a6a0b6f","width":642},"text":"","id":"doxcnSkgsCe0CwSsWI3XRisgjAf"},{"type":"paragraph","children":[{"type":"text","text":"2、打开主机","id":""}],"text":"","id":"doxcn06Mw44A6i2mkqA9JvN8wOd"},{"type":"image","attrs":{"height":390,"note":[{"type":"text","text":"启动电脑","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/9c2e0fb32d364a12ae2c7e033f77ae6a","width":616},"text":"","id":"doxcnQ2ACMwgkQK8kWkClP3x12b"},{"type":"paragraph","children":[{"type":"text","text":"3、开机自检","id":""}],"text":"","id":"doxcnQggCECkEqeoIygZfMBWjzb"},{"type":"image","attrs":{"height":374,"note":[{"type":"text","text":"启动电脑","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/27efc701142d426694a3e61e353fa97c","width":620},"text":"","id":"doxcnuewEc6mSUAWu0zihOBW3LV"},{"type":"paragraph","children":[{"type":"text","text":"4、启动成功","id":""}],"text":"","id":"doxcnKoSSEac2q4wsgRAgyMpbMb"},{"type":"image","attrs":{"height":356,"note":[{"type":"text","text":"启动电脑","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/fcb840a9c7604e729f3b41267c81f998","width":624},"text":"","id":"doxcneCWqc0IYs2wi2remimlawb"},{"type":"paragraph","children":[{"type":"text","text":"通过上述步骤启动电脑，叫做冷启动，是常规的开机步骤。此外，在特殊情况下，我们还可以通过下面两种方式启动电脑。","id":""}],"text":"","id":"doxcn6cMcOCSeqAuQEHhdfA4Vth"},{"type":"paragraph","children":[{"type":"text","text":"热启动：是指电脑处于开机的状态下，通过【开始】菜单中的【重新启动|】命令对电脑进行重新启动。","id":""}],"text":"","id":"doxcn86GKwQIOIo4Y688BafbS8A"},{"type":"paragraph","children":[{"type":"text","text":"复位启动：当电脑在运行过程中出现异常而不能运行，且采用热启动失效时，可以采用复位启动方式重启电脑，方法是按下主机箱上的【复位】按钮即可。","id":""}],"text":"","id":"doxcnOmOk2ISwgEWQAz2D0DSwUc"},{"type":"image","attrs":{"height":311,"note":[{"type":"text","text":"启动电脑","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/4d67fc730ae747bcaba3c44130a2a212","width":560},"text":"","id":"doxcniQUimmAaiMuOaOOQbIvDBh"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"关闭电脑","id":""}],"text":"","id":"doxcn0KUOiM6OwA04Ehh6CaR3yb"},{"type":"paragraph","children":[{"type":"text","text":"使用完电脑后，需要将其关闭。电脑的关机顺序与开机顺序正好相反。即先关主机电源，然后逐一关闭外部设备的电源。遵循正确的开关机顺序可延长电脑的使用寿命。","id":""}],"text":"","id":"doxcnAyKGuoyo06MGg9Tg8mc0Gb"},{"type":"paragraph","children":[{"type":"text","text":"正确的关机方法为：在系统桌面上单击【开始】按钮，在弹出的【开始】菜单中单击【关机】按钮，电脑将停止所有程序并退出操作系统，接着系统将自动断开主机电源，然后再依次关闭显示器、音箱等外接设备即可。","id":""}],"text":"","id":"doxcncWeSGigomQYKQ52OGajTfg"},{"type":"image","attrs":{"height":353,"note":[{"type":"text","text":"关闭电脑","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/4d2a6c5b5dea4e5b9b263bf5d0049780","width":570},"text":"","id":"doxcngQwgq2yWyYg0OnLDgeP0sb"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"如何使用键盘","id":""}],"text":"","id":"doxcnAK2qCO4SsGU0kBmHwqtyPb"},{"type":"paragraph","children":[{"type":"text","text":"键盘是用于操作计算机设备运行的一种指令和数据输入装置，也指经过系统安排操作一台机器或设备的一组功能键（如打字机、电脑键盘）。","id":""}],"text":"","id":"doxcnUmsSWSa406MCsP2ZtHUS6b"},{"type":"paragraph","children":[{"type":"text","text":"电脑键盘由功能键区、主键区、编辑键区，数字键区和小键盘区5个区组成。其中常用操作打字是在主键区完成的。","id":""}],"text":"","id":"doxcnS8ma6s8uCw0WmAYg74E0Gg"},{"type":"paragraph","children":[{"type":"text","text":"键盘是最常用也是最主要的输入设备，通过键盘可以将英文字母、汉字、数字、标点符号等输入到计算机中，从而向计算机发出命令、输入数据等。","id":""}],"text":"","id":"doxcnEAmyKiigowaGApju587O5g"},{"type":"image","attrs":{"height":441,"note":[{"type":"text","text":"如何使用键盘","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/3c279ca6c6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flash disk)盘的简称，据谐音也称“优盘”。U盘是闪存的一种，故有时也称作闪盘。U盘与硬盘的最大不同是，它不需物理驱动器，即插即用，且其存储容量远超过软盘，极便于携带。","id":""}],"text":"","id":"doxcnUAKOUayaiOSgKQMhX3Meif"},{"type":"image","attrs":{"height":800,"note":[{"type":"text","text":"U盘","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/34d973a83b3a4002ab84d8356dd935c3","width":800},"text":"","id":"doxcn86S6iMiQOEc6Ep0I0UrjXd"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"","id":""}],"text":"","id":"doxcncC6yagWGCcsYYj2cZfcbxc"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"软件操作","id":""}],"text":"","id":"doxcnEYigOU8qUU2GaczwudkjUe"},{"type":"paragraph","children":[{"type":"text","text":"电脑软件（Computer Software）是指计算机系统中的程序及其文档。一般来讲软件被划分为系统软件、应用软件，系统软件为计算机使用提供最基本的功能，可分为操作系统和支撑软件，其中操作系统是最基本的软件，常见的操作系统包括为微软的Windows系统。","id":""}],"text":"","id":"doxcnqmCGaeygGWycAHmR55v5if"},{"type":"image","attrs":{"height":731,"note":[{"type":"text","text":"软件操作","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/8bc3c4d31f284f45886dd22e2074946b","width":1300},"text":"","id":"doxcn0qQCya0I4Gu4aAPUupVy4f"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"软件的基础操作","id":""}],"text":"","id":"doxcniq2sWaasISeSeQ6biyZFYf"},{"type":"paragraph","children":[{"type":"text","text":"软件的使用包括软件的下载、安装和卸载：","id":""}],"text":"","id":"doxcnYS4ySIcak4eCya6y5Y9aXd"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"软件的下载","id":""}],"text":"","id":"doxcns4qy6QuSY8qG4ARsjv0T3e"},{"type":"paragraph","children":[{"type":"text","text":"1、浏览器下载","id":""}],"text":"","id":"doxcnuuqGoGEwCCWCW2LNd6TD4b"},{"type":"image","attrs":{"height":902,"note":[{"type":"text","text":"软件的下载","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/92f5914b317a4e4884f60178f6af3139","width":1048},"text":"","id":"doxcnEQSOOIWSUgIWIz8mQMKxRh"},{"type":"paragraph","children":[{"type":"text","text":"2、软件官网下载","id":""}],"text":"","id":"doxcnAaIAEqKUqyuaK0BpHQgwVd"},{"type":"image","attrs":{"height":1051,"note":[{"type":"text","text":"软件的下载","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/bc90beb021644f54bdc6c7bc9a129758","width":1920},"text":"","id":"doxcn6cqwqAagSe0eEBWrIiTWCe"},{"type":"paragraph","children":[{"type":"text","text":"3、电脑管家或360软件管家等下载软件（下图为360软件管家）","id":""}],"text":"","id":"doxcn2sCgeMScGG2a6j24QlerxL"},{"type":"image","attrs":{"height":1042,"note":[{"type":"text","text":"软件的下载","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/14dc4dc5f6eb41bdb92cc44995baf7cc","width":1920},"text":"","id":"doxcnm22iEEMEoMOEQDkv0Y5OWd"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"软件安装","id":""}],"text":"","id":"doxcneg0OKWaKu8WG29Bvf8IP5W"},{"type":"paragraph","children":[{"type":"text","text":"第一种就是你下载下来的是.exe文件的应用程序，这种程序一般都是安装包，就是你双击之后，会进入安装界面；第二种就是不需要安装的，你下载下来的是一个压缩文件，你只需要解压就可以使用。","id":""}],"text":"","id":"doxcnsE4K04Wqka8oUx6Gaku1Yw"},{"type":"paragraph","children":[{"type":"text","text":"电脑软件安装过程中特别要逐一择安装设置（安装盘位）的选择、流氓软件选项勾选等。","id":""}],"text":"","id":"doxcnMW2M4Q0gm206EBeP3R5Ohh"},{"type":"image","attrs":{"height":390,"note":[{"type":"text","text":"软件安装","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/34118380f0a3454d99f103db0d6fbc8b","width":610},"text":"","id":"doxcnoUyy4SgKEeiWX06pmT81rL"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"软件的卸载","id":""}],"text":"","id":"doxcnKgyi4oQAaKMUekE8XRlt8d"},{"type":"paragraph","children":[{"type":"text","text":"控制面板—程序和功能—找到要卸载的软件—右击卸载","id":""}],"text":"","id":"doxcnaIQ2esaqSE2OKEpsg98kab"},{"type":"image","attrs":{"height":653,"note":[{"type":"text","text":"软件的卸载","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/a2f2bb7520b743fdaf61168ee077da0a","width":1831},"text":"","id":"doxcn62EIEUcukEsi2tCsfuKISf"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"软件的启动","id":""}],"text":"","id":"doxcnu2mIsKe0uawA0uDyzpzqtd"},{"type":"paragraph","children":[{"type":"text","text":"电脑软件的启动方法一般有双击，右击-打开或从开始菜单单击打开","id":""}],"text":"","id":"doxcnqgAeMka2amSaq4eE21IApg"},{"type":"paragraph","children":[{"type":"text","text":"1、一般安装软件后会在桌面创建快捷方式，直接打开。","id":""}],"text":"","id":"doxcnUOiSsy0SEIgeiiyBo92Gfe"},{"type":"image","attrs":{"height":393,"note":[{"type":"text","text":"软件的启动","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/efdcf6db8ac1493c8c782878596857d1","width":230},"text":"","id":"doxcn4ogm8gYSYmK8W4IbOHVNOg"},{"type":"paragraph","children":[{"type":"text","text":"2、若桌面没有快捷方式，可以在电脑左下角的“开始”—“程序”里面打开。","id":""}],"text":"","id":"doxcnqCIQMyIKCKGIv4fxomBwnx"},{"type":"image","attrs":{"height":383,"note":[{"type":"text","text":"软件的启动","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/2bfcbcb613a7419b8bf273a91d232038","width":369},"text":"","id":"doxcnweSYMWySQOWCWuCrShYRHf"},{"type":"paragraph","children":[{"type":"text","text":"3、若“程序”里面也没有，可以打开软件的安装位置打开。 ","id":""}],"text":"","id":"doxcnGosQ2CuSKy6oqkLRLxZilc"},{"type":"image","attrs":{"height":851,"note":[{"type":"text","text":"软件的启动","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/ff10a1e5788a43528ca655aa086f351b","width":1157},"text":"","id":"doxcneemAEEumqy8CkroYQvKMXf"},{"type":"paragraph","children":[{"type":"text","text":"说明：第三种方法是按默认的安装路径找到的软件安装文件夹打开程序的，实际情况可以根据软件的具体安装路径选择打开。","id":""}],"text":"","id":"doxcnKMqCwIEqSGis06K3RZTEMc"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"应用软件的操作","id":""}],"text":"","id":"doxcnYkqaUMCsSK6c6NjEUzCjqe"},{"type":"paragraph","children":[{"type":"text","text":"文件操作包括如何操作打开，关闭、删除、移动、重命名和编辑文件","id":""}],"text":"","id":"doxcngw2qcG4igyeOkTkY16OOpe"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"文件打开","id":""}],"text":"","id":"doxcnOSo6QGIoWkeGMVuzquSxKd"},{"type":"paragraph","children":[{"type":"text","text":"文件打开方式见“如何启动软件”部分","id":""}],"text":"","id":"doxcnUiQMs4WKESyQaEW6u2Xqvb"},{"type":"paragraph","children":[{"type":"text","text":"常见不同后缀、格式文件打开方法：","id":""}],"text":"","id":"doxcnMIKs86WcEAYcWmQuglYAZb"},{"type":"paragraph","children":[{"type":"text","text":".txt .doc .docx .obt 这些格式可以用微软的office打开，或者用wps打开。","id":""}],"text":"","id":"doxcnEOucCoyCUM6k25LBy7J0ih"},{"type":"image","attrs":{"height":864,"note":[{"type":"text","text":"文件打开","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/8aad1505bea04d6b95450ca2dd3c1a33","width":1004},"text":"","id":"doxcnmGyKyQEu08qAewer5eJ8Vc"},{"type":"paragraph","children":[{"type":"text","text":"mp3格式文件可以使用使用电脑自带的Media Player播放器或者其他的音乐播放器。","id":""}],"text":"","id":"doxcneI0COQcSG6cAy67UR5IwCf"},{"type":"image","attrs":{"height":414,"note":[{"type":"text","text":"文件打开","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/b0826de3e99e469ab89db035a5bdd2e2","width":473},"text":"","id":"doxcnq4mg624UMKMM2bRU4iPmVh"},{"type":"paragraph","children":[{"type":"text","text":"","id":""}],"text":"","id":"doxcneCA4M8QgIoeEEcrQa10S4S"},{"type":"paragraph","children":[{"type":"text","text":"mp4、mpg. mpeg.等文件可以使用电脑自带的电影和电视功能或者其他视频软件打开。","id":""}],"text":"","id":"doxcnYeOgKuMw6c2oC05AaDDw5b"},{"type":"image","attrs":{"height":390,"note":[{"type":"text","text":"文件打开","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/9b1b94bc5ffc4c6cb1952276b2e3fe82","width":465},"text":"","id":"doxcnUckMEKyceKWy2hAuKLDkWe"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"文件关闭","id":""}],"text":"","id":"doxcn260EgqGMamseAF1a94k90f"},{"type":"paragraph","children":[{"type":"text","text":"一般软件点击右上角的“×”，再点击“确认”，即可关闭文件","id":""}],"text":"","id":"doxcnY4yI0uO4yMYuMTviRw5YCf"},{"type":"image","attrs":{"height":265,"note":[{"type":"text","text":"文件关闭","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/bcd7c2ec494846be995cfe0cdd8542f9","width":1920},"text":"","id":"doxcnQ6OuYYIIaQcqU7YTbv1lVc"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"文件删除","id":""}],"text":"","id":"doxcn8qyog2cGo8qC6id3Twkath"},{"type":"paragraph","children":[{"type":"text","text":"1、选中文件-右击-删除","id":""}],"text":"","id":"doxcniKIwacO8OSOAmuF8H1rNId"},{"type":"image","attrs":{"height":370,"note":[{"type":"text","text":"文件删除","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/0876b78b99074dd6a05008db379f270d","width":523},"text":"","id":"doxcnS0oMS4CAuQQA7yMGDBPtcr"},{"type":"paragraph","children":[{"type":"text","text":"2、选中文件-按“delete”键，即刻删除","id":""}],"text":"","id":"doxcnM8UCwIyY2gIS4Qtl6NPZme"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"文件移动","id":""}],"text":"","id":"doxcnko4UOMSSuE4em8VOJExOXf"},{"type":"paragraph","children":[{"type":"text","text":"方法一：长按鼠标左键选中并拖动鼠标移动文件到想要的地方","id":""}],"text":"","id":"doxcnAYkOSwCeIcUq65MJKmBlbb"},{"type":"paragraph","children":[{"type":"text","text":"方法二：右击鼠标—剪切-打开需要移动的地方-右击粘贴","id":""}],"text":"","id":"doxcnKMQyIiOuQ0qAqeqzVOZxTf"},{"type":"image","attrs":{"height":379,"note":[{"type":"text","text":"文件移动","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/649e297f60704d19aec017b9510f566d","width":650},"text":"","id":"doxcnE28skCsKqCWoJGTe0x0hkI"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"文件重命名","id":""}],"text":"","id":"doxcnI4Kcq20qEUEE2L7hnujbsh"},{"type":"paragraph","children":[{"type":"text","text":"方法一：选中文件—右击—重命名","id":""}],"text":"","id":"doxcngCc6OMWomWAi8T5wvdKxZc"},{"type":"paragraph","children":[{"type":"text","text":"方法二：鼠标左击—键盘F2，即可进行重命名","id":""}],"text":"","id":"doxcnyOawqgyqIk4AOKGQKTO2md"},{"type":"image","attrs":{"height":385,"note":[{"type":"text","text":"文件重命名","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/ae5debc0934e43b28efe1c591dc6e145","width":586},"text":"","id":"doxcn8Cwu2MiEMYOsINjrmW3vOh"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"文件管理基础知识","id":""}],"text":"","id":"doxcnm2kumkCYuYqc42FTqsSmRe"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"硬盘分区","id":""}],"text":"","id":"doxcncqyuY6E6kE8MGg7EGz69Zd"},{"type":"paragraph","children":[{"type":"text","text":"电脑中的文件都存放在硬盘中，而新买回来的硬盘相当于一张白纸 ，为了能够更好地使用它，需要在，白纸上划分出若干小块。然后再打上格子。硬盘分区就是这个道理，在安装操作系统之前，需要进行硬盘分区和格式化，然后才能投入使用。对硬盘进行分区后，各个分区独立使用，互不影响。在操作系统中每个分区都用一个盘符表示，如本地磁盘（C）、本地磁盘（D）等。","id":""}],"text":"","id":"doxcnGOYUEEwuMI6Uq0SoFxCmof"},{"type":"image","attrs":{"height":227,"note":[{"type":"text","text":"硬盘分区","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/c7712ec643e843149d3ae7855e5d1584","width":1006},"text":"","id":"doxcn08YuuYEAaUAosP61kmkQwh"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"存储路径","id":""}],"text":"","id":"doxcnqyKQO0a2E28eATIVxWdQKh"},{"type":"image","attrs":{"height":721,"note":[{"type":"text","text":"存储路径","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/52858a2949dc43d5bebb80031ba286bf","width":1096},"text":"","id":"doxcnaQOy2G4mkgkIgyrVfQ752G"},{"type":"paragraph","children":[{"type":"text","text":"文件的存储路径，就是文件在电脑硬盘中的存储位置，由硬盘分区、文件夹和子文件夹构成。其中硬盘分区的盘符为路径的第一项，是第一级目录，也叫做根目录，后面紧跟冒号和斜线（：/），文件夹和子文件夹中间则以斜线（/）隔开。","id":""}],"text":"","id":"doxcnWaSkqYM6GU4qAhNRayeSch"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"如何使用浏览器","id":""}],"text":"","id":"doxcnOwy2qsaCUUkqYTSH56oDch"},{"type":"paragraph","children":[{"type":"text","text":"主要介绍如何使用浏览器（以及搜索引擎）查找资料。","id":""}],"text":"","id":"doxcnSeu0I0OaOu0kI9mq3vLsxe"},{"type":"paragraph","children":[{"type":"text","text":"1、首先在浏览器中输入搜索引擎的网址，以百度为例：","id":""}],"text":"","id":"doxcnMwe80waQQ0MASEEFGkKqkg"},{"type":"image","attrs":{"height":320,"note":[{"type":"text","text":"如何使用浏览器","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/6a3ee9abbe364a0191b619cc5f2a513c","width":600},"text":"","id":"doxcnA2aM4yGmuYIGyc7GjiUjbd"},{"type":"paragraph","children":[{"type":"text","text":"2、然后就进入搜索引擎所在网页，这样才能进行搜索：","id":""}],"text":"","id":"doxcn8a6gcggMEW2O0axgNmdljh"},{"type":"image","attrs":{"height":320,"note":[{"type":"text","text":"如何使用浏览器","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/65be3c837b4a470187c13e33fa41b58c","width":600},"text":"","id":"doxcnoA6OiWW0IoaY4ti7QM1GqS"},{"type":"paragraph","children":[{"type":"text","text":"3、之后在搜索栏中输入搜索内容，可以是词语、短语也可以是句子：","id":""}],"text":"","id":"doxcnEoI0Ag4mgCm4ygxXk1Dmee"},{"type":"image","attrs":{"height":320,"note":[{"type":"text","text":"如何使用浏览器","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/5b8207f604ad4fa7aa601326847b504d","width":600},"text":"","id":"doxcnOiQswgy4WuqGc7Jzgj9zWf"},{"type":"paragraph","children":[{"type":"text","text":"4、最后点击百度一下进行搜索：","id":""}],"text":"","id":"doxcnsAUWOSmoCqMEY7DaIbYhkc"},{"type":"image","attrs":{"height":320,"note":[{"type":"text","text":"如何使用浏览器","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/b6b7e77b6c26426f885e2c2de35b4f76","width":600},"text":"","id":"doxcnACqAimA4822ymu1XyrMfdd"},{"type":"paragraph","children":[{"type":"text","text":"5、然后就可以得到想要的信息了：","id":""}],"text":"","id":"doxcnac8qwWKmiawQME3wCX3a4w"},{"type":"image","attrs":{"height":320,"note":[{"type":"text","text":"如何使用浏览器","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/73daa938a5874dd5b19441a7ef21d380","width":600},"text":"","id":"doxcnM2IAOWqg8e2SiYh5uDZfTc"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"电脑的日常维护","id":""}],"text":"","id":"doxcnwYogQ04cEqueKujItiSAee"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"日常注意事项","id":""}],"text":"","id":"doxcnOQa0SaCgg28IyekDcsg7xd"},{"type":"paragraph","children":[{"type":"text","text":"电脑的五大要害：静电、灰尘、水、震荡、病毒是电脑的五大要害","id":""}],"text":"","id":"doxcnOmE2OCW6gyEe2riQybL5Gb"},{"type":"paragraph","children":[{"type":"text","text":"1、防静电：防止静电损坏电脑各部分电子原件，处理办法是将电脑机箱外壳接地，尽量使用三脚电源插头。","id":""}],"text":"","id":"doxcnWQkGgc2gKuW2kRTCBQTbpf"},{"type":"paragraph","children":[{"type":"text","text":"2、防尘：防止灰尘进入电脑机箱内，使用时保持环境清洁，并定期清理电脑主机内的灰尘。","id":""}],"text":"","id":"doxcnEEuoaUQCqWI8ss8EbH09kb"},{"type":"paragraph","children":[{"type":"text","text":"3、防水：防止液体进入电脑的任何部分，保持室内通风。不要将电脑放在湿度较大的房间使用。","id":""}],"text":"","id":"doxcnaqQOgmEegkMysmefTrvdc8"},{"type":"paragraph","children":[{"type":"text","text":"4、防震：在使用的过程要防止对电脑的震荡，应将电脑平稳放置在电脑桌上，以防不小心摔落等","id":""}],"text":"","id":"doxcnmcQsYIgWAUeK6ORhhUelMf"},{"type":"paragraph","children":[{"type":"text","text":"5、防病毒：病毒是电脑的一大要害，在日常使用中要防止病毒的进入，需要给电脑安装防病毒软件，并经常更新病毒库，经常给电脑杀毒。","id":""}],"text":"","id":"doxcn6AkgcmWikI64wXPVc121sf"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"显示器维护","id":""}],"text":"","id":"doxcnGWSK4QqMIM0WPCydY3UdJ7"},{"type":"paragraph","children":[{"type":"text","text":"液晶显示器最大的禁忌在于触摸液晶面板。液晶面板表面有专门的涂层，这层涂层可以防止反光，增加观看效果。而很多用户不知道这点，总是习惯于用手去摸液晶屏幕，殊不知人手上有一定的腐蚀性油脂，会轻微的腐蚀面板的涂层，时间长了会造成面板永久性的损害。这种被损坏的面板在使用中会有斑驳陆离的感觉。另外，有些人喜欢用手去压面板，觉得很有意思。这绝对是个恶劣的习惯，这样做会导致坏点和暗斑，这可是永久性的损害，绝不可修复的！","id":""}],"text":"","id":"doxcn4isEOMouuus2ErXRfeaiDe"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"主机维护","id":""}],"text":"","id":"doxcnS4qaUWCCkYMGA3Pcb8Hudb"},{"type":"image","attrs":{"height":228,"note":[{"type":"text","text":"主机维护","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/6ee986820e8d4e56a2cff1f2a0ac9b8f","width":290},"text":"","id":"doxcnAI0qeaIwK0yUqGS8xLEAJh"},{"type":"paragraph","children":[{"type":"text","text":"在电脑运行过程中，机器的各种设备不要随便移动，不要插拔各种接口卡，也不要装卸外部设备和主机之间的信号电缆。如果需要作上述改动的话，则必须在关机且断开电源线的情况下进行。","id":""}],"text":"","id":"doxcncKE6u8qkYaIa4szBuVynCb"},{"type":"paragraph","children":[{"type":"text","text":"不要频繁地开关机器。关机后立即加电会使电源装置产生突发的大冲击电流，造成电源装置中的器件被损坏，也有可能造成硬盘驱动突然加速，使盘片被磁头划伤。因此，这里我们建议如果要重新启动机器，则应该在关闭机器后等待10秒钟以上。在一般情况下不要擅自打开机箱，如果机器出现异常情况，应该及时上报。","id":""}],"text":"","id":"doxcnQi8GcCSaSK8kpHGL8JKewb"},{"type":"paragraph","children":[{"type":"text","text":"数据存放在不同分区，减少磁头对某一扇区的经常读写，导致这一扇区的损坏。 建议你使用不同的媒介定期对你的重要数据进行备份，并存放在不同的地方。一个文件可以在备份盘上放一份，可以打印一份，可以刻录成光盘。","id":""}],"text":"","id":"doxcnOOW4OG8Wgy6GK4fXf8vGqb"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"键盘、鼠标的日常维护","id":""}],"text":"","id":"doxcnGCyMqwQkciaQeerCBvdfMg"},{"type":"paragraph","children":[{"type":"text","text":"（1）保保持清洁 过多的灰尘会给电路正常工作带来困难，有时造成误操作，杂质落入键位的缝隙中会卡住按键，甚至造成短路。我们在清洁键盘时，可用柔软干净的湿布来擦拭，按键缝隙间的污渍可用棉签清洁，不要用医用消毒酒精，以免对塑料部件产生不良影响。清洁键盘时一定要在关机状态下进行，湿布不宜过湿，以免键盘内部进水产生短路。","id":""}],"text":"","id":"doxcnSy2MIyGkYKCkuzzZbWOjbv"},{"type":"paragraph","children":[{"type":"text","text":"(2)不将液体洒到键盘上 一旦液体洒到键盘上，会造成接触不良、腐蚀电路造成短路等故障，损坏键盘。所以我们一般不要边喝茶边坐在电脑前,这样一不小心茶可能就洒在键盘上.","id":""}],"text":"","id":"doxcnUIigmeqUQsI2c7FKXO32Xe"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"电脑病毒防护","id":""}],"text":"","id":"doxcni0GY48EKWKocOgPwbovBNb"},{"type":"paragraph","children":[{"type":"text","text":"电脑一旦感染了病毒，就会出现很多症状。导致系统性能的下降，影响用户的使用，甚至造成灾难性的后果。电脑在日常的使用过程中要定期进行病毒查杀，防患于未然。常用的电脑杀毒软件有360，金山毒霸和电脑管家等等。以金山毒霸为例介绍电脑杀毒的过程。","id":""}],"text":"","id":"doxcnayESKCwQsccQO3DfNJrpI6"},{"type":"paragraph","children":[{"type":"text","text":"1、打开程序主界面","id":""}],"text":"","id":"doxcnyII0O2AUAAEAEjbwDeZmQd"},{"type":"image","attrs":{"height":725,"note":[{"type":"text","text":"电脑病毒防护","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/48bef00dfde9455180ae7e565a96451a","width":1150},"text":"","id":"doxcnyEAUWUCqiqeuSqJxR4hWCf"},{"type":"paragraph","children":[{"type":"text","text":"2、选择杀毒方式","id":""}],"text":"","id":"doxcnACQaOIiK6aMSAfsMrpFLHd"},{"type":"image","attrs":{"height":725,"note":[{"type":"text","text":"电脑病毒防护","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/20d4459218714fd3bfe7ad79421554aa","width":1150},"text":"","id":"doxcnMYuSKEqu6IwiEpFFaYoJjc"},{"type":"paragraph","children":[{"type":"text","text":"3、开始杀毒。程序对磁盘内容自动进行扫描，如果检测到病毒会自动进行清除，并将结果显示在扫描栏中。","id":""}],"text":"","id":"doxcn4Aiwq0iWwQIe6I5NET5Ry7"},{"type":"image","attrs":{"height":725,"note":[{"type":"text","text":"电脑病毒防护","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/380a7b7e6ca04cec998b1888f31b76d8","width":1150},"text":"","id":"doxcna66y8kqMAEOWMPfkeIhMic"},{"type":"paragraph","children":[{"type":"text","text":"4、除此之外还可以对特点的盘进行杀毒。","id":""}],"text":"","id":"doxcnG2EEekkYCiKYKQYdMFhY2f"},{"type":"image","attrs":{"height":725,"note":[{"type":"text","text":"电脑病毒防护","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/20e90fa900aa423e8790a1567331438f","width":1150},"text":"","id":"doxcnsgo6YWwsMoMyu2RhLVDMEf"},{"type":"paragraph","children":[{"type":"text","text":"","id":""}],"text":"","id":"doxcnSuEciuc2U6Q6KHxAF4LlNm"}]%3C%2Fhowto_content%3E4. ef28-80镜头
是变焦镜头，最大光圈 1:3.5-1:5.6，滤镜直径 58mm，遮光罩 EW-60C ，卡口 EF卡口 ，此镜头只要是CANON的EOS系列相机都可以使用的。
5. 佳能ef28-105镜头
拍视频不要用拍摄单张照片的思维来进行，拍摄照片一般一类照片用一个镜头就可以了。 拍视频因为是一段时间的画面，要讲究画面的效果，一般来说要不断换用不同焦段的镜头来拍摄，最后剪辑成连续的画面，这个画面就有了特写，有了中焦和长焦，有了推拉的画面，这样才是一个比较完美的能够表现你的思想主题的一段视频。
佳能演示的一小段视频，一般会用到七八只镜头，推荐使用24-70/2.8、70-200/2.8加35、85定焦镜头。如只想一只镜头拍，那只需一个大变焦行了，如24-105、28-300。 希望对你有帮助！
6. ef24-70镜头
单反镜头算的是焦距不是倍数，如果在全副机身上大概是0.5-5倍
