Re: [問題] 請問這張圖的意義

看板DC (數位相機)作者strikeX (無法無天)時間20年前 (2004/05/02 20:57)推噓4(4推 0噓 0→)

留言4則, 3人參與討論串2/2 (看更多)

※ 引述《aloke (風格中立。)》之銘言： : http://www.dpreview.com/reviews/samples/rescharts/oly_e1.jpg

: 這是 E1 的.. : 想請問這張圖的意義是什麼？為什麼測試的時候大家都拍這張圖？幾個 link 給你參考參考 http://www.digital.idv.tw/Classroom/MROH-CLASS/oh16/index-16.htm http://www.dcview.com.tw/review/lab/index.htm 主要的組成元件如下 Test chart elements include: - Black border for defining active area - Center dual frequency zone plate for focusing purposes - 100-600 LW/PH and 500-2000 LW/PH hyperbolic wedges for measuring center and corner, horizontal and vertical visual resolution. - 100-1000 line square wave sweeps for measuring vertical and horizontal limiting resolution - Slightly slanted (@ 5 degrees) large black bars for measuring center horizontal and vertical SFR - 45 degree diagonal black square for measuring diagonal SFR - Slightly slanted small black squares for measuring vertical and horizontal SFR at extreme corners of field - Slightly slanted H-shaped bars for SFR at far sides of field - Slightly slanted square wave bursts for horizontal and vertical aliasing ratios - Slightly slanted thin long vertical line and horizontal line for checking scan linearity - 100-1000 LW/PH short black lines for vertical and horizontal pulse responses - Circle with cross and X for observation of scanning non-linearities - Checkerboard patterns for image compression artifacts -- ▕▔▔▔▔▔▔▔▔▔▔▔ ▕▕Am I alone? ▏ ▕▕ ▏ ▕▕U are not alone.| ▏ ▕ ▔▔▔▔▔▔▔▔▔‧ ▄▆██▆▄ http://www.wretch.twbbs.org/guestbook/strikeX -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.62.132.81