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1、 1GUANGDONG POLYTECHNIC NORMAL UNIVERSITY攝影基礎(chǔ)攝影基礎(chǔ)【之二：數(shù)碼照相機(jī)的認(rèn)識(shí)和使用 】 2手持電子照相機(jī)手持電子照相機(jī) 3GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 4GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 5GUANGDONG POLYTECHNIC NORMAL UNIVERSITYLCD觀看、存儲(chǔ)觀看、存儲(chǔ)數(shù)字處理、壓縮數(shù)字處理、壓縮模數(shù)轉(zhuǎn)換模數(shù)轉(zhuǎn)換電信號(hào)放大電信號(hào)放大光電轉(zhuǎn)換光電轉(zhuǎn)換n傳感器、儲(chǔ)存媒體傳感器、儲(chǔ)存媒體取代膠卷取代膠卷n模模/數(shù)轉(zhuǎn)換、數(shù)轉(zhuǎn)換、DSP處理
2、器來處理光信處理器來處理光信號(hào)和數(shù)字圖像信號(hào)號(hào)和數(shù)字圖像信號(hào)nLCD顯示屏供預(yù)覽、顯示屏供預(yù)覽、取景和設(shè)置菜單取景和設(shè)置菜單 6GUANGDONG POLYTECHNIC NORMAL UNIVERSITYCCD：Charged Coupled Device光電耦合元件CMOS：Complement Metal Oxide Semiconductor互補(bǔ)型金屬氧化物半導(dǎo)體硅氧化物半導(dǎo)體 7GUANGDONG POLYTECHNIC NORMAL UNIVERSITYCCD色彩分辨原理 8GUANGDONG POLYTECHNIC NORMAL UNIVERSITYCCD色彩分辨原理 9GUAN
3、GDONG POLYTECHNIC NORMAL UNIVERSITY 10GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 11GUANGDONG POLYTECHNIC NORMAL UNIVERSITYCCD sensor放大A/D光子電子電壓數(shù)字信號(hào)CMOS 芯片可以在像素上同時(shí)完成這兩個(gè)步驟 12GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 13GUANGDONG POLYTECHNIC NORMAL UNIVERSITYn構(gòu)成影像的最小單位，也即傳感器形成影像構(gòu)成影像的最小單位，也即傳感器形成影像信號(hào)的最小單位信號(hào)的最
4、小單位n像素越高，像素越高，清晰度清晰度與與分辨率分辨率越高越高n兩種表示方法：兩種表示方法：“乘積法乘積法”“”“總量法總量法”38722592 1020萬萬n通過軟件處理增加原有像素通過軟件處理增加原有像素n分機(jī)內(nèi)插值（分機(jī)內(nèi)插值（“硬件硬件”插值）、后期插值處理插值）、后期插值處理 14GUANGDONG POLYTECHNIC NORMAL UNIVERSITYn最大像素：經(jīng)插值處理最大像素：經(jīng)插值處理后可得到的最大像素后可得到的最大像素 / 傳感器的真實(shí)像素傳感器的真實(shí)像素n有效像素：真正參與感有效像素：真正參與感光成像的像素值光成像的像素值 15GUANGDONG POLYTECH
5、NIC NORMAL UNIVERSITY 16GUANGDONG POLYTECHNIC NORMAL UNIVERSITYn傳統(tǒng)相機(jī)：傳統(tǒng)相機(jī)：24mm36mmn兩種表示法：兩種表示法：“長寬乘積法長寬乘積法”“”“對(duì)角線長度對(duì)角線長度”例：例：9.3mm14.8mm 1/5英寸等英寸等n一般而言，傳感器大，影像質(zhì)量高一般而言，傳感器大，影像質(zhì)量高 17GUANGDONG POLYTECHNIC NORMAL UNIVERSITY1/4英寸英寸1/3英寸英寸1/2英寸英寸2/3英寸英寸 18GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 19GUANGDON
6、G POLYTECHNIC NORMAL UNIVERSITY 20GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 21GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 22GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 23GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 24GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 25GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 26GUANGDONG POLY
7、TECHNIC NORMAL UNIVERSITY 27GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 28GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 29GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 30GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 31GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 32GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 33GUANGDONG POLYTECHNI
8、C NORMAL UNIVERSITY 34 35GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 36 37GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 38GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 39GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 40GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 41GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 常見的測光模式有：分區(qū)測光或矩陣式測光、中央
9、重常見的測光模式有：分區(qū)測光或矩陣式測光、中央重點(diǎn)測光、點(diǎn)測光、點(diǎn)測光、點(diǎn)測光、AF對(duì)焦區(qū)域測光對(duì)焦區(qū)域測光 測光模式在菜單內(nèi)調(diào)整測光模式在菜單內(nèi)調(diào)整 42GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 43GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 44GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 45GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 46GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 47GUANGDONG POLYTECHNIC NORMAL UNIVERSITY 48GUANGDONG POLYTECHNIC NORMAL UNIVERSITY
第二講數(shù)碼照相機(jī)的認(rèn)識(shí)和使用.
