Advantages There are still good rea

Advantages There are still good reasons to use blue or green screens. The Poseidon Adventure (2006) had an all–stainless steel kitchen. Some tests were shot using traditional blue screens, but the blue contamination was so great that it couldn’t be removed. Using a front projection blue screen eliminated the blue reflection because the screen doesn’t put out any blue light. One light source can light up a 20- by 40-foot screen with an even light field. This can provide much higher light intensity for working at higher f-stops. It is easy to change out blue or green screens for whatever color is needed. The space needed is a lot smaller than with rear projection. Although front projection with picture imagery is not used much anymore due to the quality of the final image, it could be used when a scene has many of the same shots or shots that go on for long periods of time.Disadvantages The screen material is quite expensive and must be kept in optimum condition for continued use. It requires a special camera projector or light source setup. If the alignment of the camera projector is not 100% correct, fringing may appear around the actors. This requires setup time to get the projector and camera lined up, depending on how close or far away the actor is from the camera. There are also issues with haloing, depending on how dark the projected image is and how much light is on the actor or foreground object. Again, haloing can be reduced by putting black velvet on the actor’s backside, as long as the actor doesn’t rotate during the shot.

結果 (繁體中文) 1:

Advantages There are still good reasons to use blue or green screens. The Poseidon Adventure (2006) had an all–stainless steel kitchen. Some tests were shot using traditional blue screens, but the blue contamination was so great that it couldn’t be removed. Using a front projection blue screen eliminated the blue reflection because the screen doesn’t put out any blue light. One light source can light up a 20- by 40-foot screen with an even light field. This can provide much higher light intensity for working at higher f-stops. It is easy to change out blue or green screens for whatever color is needed. The space needed is a lot smaller than with rear projection. Although front projection with picture imagery is not used much anymore due to the quality of the final image, it could be used when a scene has many of the same shots or shots that go on for long periods of time.
缺點屏幕材質是相當昂貴的，並且必須保持繼續使用最佳狀態。它需要一個特殊的照相機，投影儀或光源的設置。如果相機投影機的定位是不是100％正確，邊緣可能會出現周圍的演員。這需要建立時間，以獲得投影儀和照相機一字排開，取決於演員如何接近或遠從相機。還有一些問題與暈圈，這取決於如何黑暗的投影圖像以及有多少光演員或前景對象。此外，可以通過將黑色絲絨演員的背面，只要演員不拍攝過程中旋轉可以減少暈圈。

結果 (繁體中文) 2:

優勢 仍然有充分的理由使用藍色或綠色螢幕。波塞冬冒險（2006年）有一個全不銹鋼廚房。一些測試是使用傳統的藍屏拍攝的，但藍色污染如此之大，無法去除。使用前投影藍屏消除了藍色反射，因為螢幕不會發出任何藍光。一個光源可以照亮一個20乘40英尺的螢幕，具有均勻的光場。這可以為在較高的光站工作提供更高的光強度。無論需要什麼顏色，都可以輕鬆更換藍色或綠色螢幕。所需的空間比背投小很多。儘管由於最終圖像的品質，帶有圖像圖像的前投影不再使用太多，但當場景具有許多相同的鏡頭或長時間持續的鏡頭時，可以使用它。
缺點 螢幕材料相當昂貴，必須保持最佳狀態才能繼續使用。它需要特殊的攝像機投影儀或光源設置。如果攝像機投影儀的對齊方式不正確，則演員周圍可能會出現邊緣。這需要設置時間才能將投影儀和攝像機排成一排，具體取決於演員離攝像機有多近或有多遠。光暈也存在問題，具體取決於投影圖像的暗程度以及參與者或前景物件上的光線量。同樣，只要演員在拍攝過程中不旋轉，就可以通過在演員的背面放置黑色天鵝絨來減少光暈。

結果 (繁體中文) 3:

優點使用藍色或綠色荧幕仍然有很好的理由。波塞冬歷險記（2006）有一個全不銹鋼廚房。一些測試是用傳統的藍色荧幕拍攝的，但是藍色污染太嚴重，無法去除。使用前投影藍屏消除了藍色反射，因為荧幕不會發出任何藍光。一個光源可以點亮一個20×40英尺的荧幕，光場均勻。這可以為在更高的f-stops工作提供更高的光强度。無論需要什麼顏色，更換藍色或綠色荧幕都很容易。所需的空間比背投要小得多。儘管由於最終影像的質量，帶有圖片影像的前投影不再被使用，但是當場景中有許多相同的鏡頭或持續了很長一段時間的鏡頭時，可以使用它。
缺點：篩網資料非常昂貴，必須保持最佳狀態，以便繼續使用。它需要一個特殊的攝像機投影儀或光源設定。如果攝像機放映機的對準度不是100%正確，演員周圍可能會出現條紋。這需要設定時間來讓投影儀和相機排成一行，具體取決於演員離相機的距離。光暈也有一些問題，這取決於投影影像的暗度以及演員或前景對象上的光的多少。同樣，只要演員在拍攝過程中不旋轉，就可以通過在演員的背部穿上黑色天鵝絨來减少暈染。