### 5.16. Sarmal ve Kıstırma

#### 5.16.1. Genel Görünüm

Şekil 17.99. “Sarmal ve Kıstırma” süzgeci örneği

Özgün görüntü

“Sarmal ve Kıstırma” süzgeci uygulandı

“Whirl and Pinch” distorts your image in a concentric way.

“Whirl” (applying a non-zero Whirlangle) distorts the image much like the little whirlpool that appears when you empty your bath.

“Pinch”, with a nil rotation, can be compared to applying your image to a soft rubber surface and squeezing the edges or corners. If the Pinch amount slider is set to a negative value, it will look as if someone tried to push a round object up toward you from behind the rubber skin. If the Pinch amount is set to a positive value, it looks like someone is dragging or sucking on the surface from behind, and away from you.

| İpucu
The “pinch” effect can sometimes be used to compensate for image distortion produced by telephoto or fish-eye lenses (“barrel distortion”).

Şekil 17.100. Örnekleme

Özgün görüntü

Sarmal

Kıstırma

#### 5.16.2. Süzgeci Etkinleştirme

Bu süzgeç ana menüde Süzgeçler → Bozulma → Sarmal ve Kıstırma… altında bulunur.

#### 5.16.3. Seçenekler

Şekil 17.101. “Sarmal ve Kıstırma” süzgeci seçenekleri

Önayarlar, “Girdi Türü”, Kırpma, Harmanlama Seçenekleri, Ön izleme, Süzgeci birleştir, Bölünmüş görünüm

  | Not
  Bu seçenekler şurada açıklanmıştır: Kısım 2, “Ortak Özellikler”.

Sarmal

  The clockwise or counter clockwise angle (-360 to +360). Controls how many degrees the affected part of the image is rotated.

Kıstırma

  The pinch amount (-1 to +1) determines how strongly the affected part of the image is pinched.

Yarıçap

  Whirlpool width (0.0-2.0). Determines how much of the image is affected by the distortion. If you set `Radius` to 2, the entire image will be affected. If you set `Radius` to 1, half the image will be affected. If `Radius` is set to 0, nothing will be affected (think of it as the radius in a circle with 0 in the center and 1 halfway out).

5.15. Dalgalar |  | 5.17. Rüzgar

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