螢幕比例 21:9 = 2.33:1
曾經很憧憬這樣的視覺效果
微文青的電影畫面
21:9 的衝擊
結果Instagram 放不下 21:9
一定要裁切才能放上去
意外的是 Facebook 雖然畫質變差可是卻可以完整放入不用裁切
偶爾放一兩張可以
突然發現
這陣子的顏色有點不像過去的我
一種迷茫正負逆沖的後現代感
電影畫面 (21:9 = 2.33 : 1)
Blu-ray movies adopts 16:9 (1920*1080pix) as storage aspect ratio. The most common display aspect ratios used today in the presentation of films in movie theaters are 1.85:1 and 2.39:1 (which is sometimes rounded up to 2.40:1).
As for example, the Blu-ray movie Nine is released in 1.85:1 aspect ratio, another new released Blu-ray Disc Inception is in 2.4:1 aspect ratio.
When playing the two Blu-ray Discs with Sony PS3 on 16:9 HDTV, there are black bars on top and bottom of the image.The letterboxing is negligibly small for a 1.85:1 BD movie Nine, but is obvious for 2.4:1 Inception Blu-ray.
The basic problem is that the theatrical widescreen image is long and horizontal but your TV screen is basically square.
When viewing a 2.4: 1 picture on 16: 9 screens, over 25% of the screen is filled with black bars. It’s the current display technology that makes Scope movies look half their size relative to 1.85 movies, letterboxing them to make the image fit inside the narrower, 16:9 wide, display shape.
In order to play 2.4:1 Blu-ray movie at full frame on 16:9 HDTV without black bars, crop the anamorphic picture to 16:9.
Crop the 2.4:1 anamorphic image to fit for 16:9 displays.
In this way a portion of the widescreen theatrical image of a film is selected to fill your TV screen. Letterboxed black borders and partial of the image are cropped out across the widescreen film so that the left image will be just right for 16:9 screen (somewhat like pan and scan).Pros: you get full-screen display of the movie and not lose aspect ratio.
Cons: this results in a loss of more than 25% of the original image.
Common aspect ratios using in DVDs and Blu-ray Discs:
1.33 (4:3)
35 mm original silent film ratio, today commonly known in TV and video as 4:3. Also standard ratio for MPEG-2 video compression. This format is still used in many personal video cameras today and has influenced the selection or design of other aspect ratios. It is the standard 16 mm and Super 35mm ratio.1.78:1 (16:9)
Video widescreen standard, used in high-definition television, one of three ratios specified for MPEG-2 video compression. Also used increasingly in personal video cameras.1.85:1
35 mm US and UK widescreen standard for theatrical film. Introduced by Universal Pictures in May, 1953. Projects approximately 3 perforations (“perfs”) of image space per 4 perf frame; films can be shot in 3-perf to save cost of film stock.2.35:1
35 mm anamorphic prior to 1970, used by CinemaScope (“‘Scope”) and early Panavision. The anamorphic standard has subtly changed so that modern anamorphic productions are actually 2.39,[1] but often referred to as 2.35 anyway, due to old convention. (Note that anamorphic refers to the compression of the image on film to maximize an area slightly taller than standard 4-perf Academy aperture, but presents the widest of aspect ratios.)2.39:1 (2.4:1)
35 mm anamorphic from 1970 onwards. 2.39:1 is sometimes rounded up to 2.40:1[1]. Often commercially branded as Panavision format or ‘Scope.
看不懂嗎
簡單的說就是現在一般電視都是 16:9 = 1.77 : 1
電影寬螢幕通常都是 2.39:1，剛好可以用來放映 21:9 = 2.33 :1
所以才會說 16:9 感覺很電視，21:9感覺很電影
只有少部分的大片用很厲害的 IMAX 來拍
那就會用到不同的尺寸比例了
這邊就要牽扯到電影發展跟底片(數位版本就是模擬底片的感光元件)的歷史
有興趣的話歡迎參考我之前這篇 Film format size
