title: applying different filters
body: <p>I want to ask that i am using core image and applying  some filter is used this filter</p>
  
  <pre><code>filter = [CIFilter filterWithName:@"CIVignette" 
                                    keysAndValues: kCIInputImageKey, beginImage, 
                          @"inputIntensity", [NSNumber numberWithFloat:0.8], nil];
      CIImage *outputImage = [filter outputImage];
  </code></pre>
  
  <p>but i wan to know that how i implement other filters i tried but app crashes so i want to apply like these filters which is built in i chech using log </p>
  
  <pre><code>    CISourceOutCompositing,
      CISourceOverCompositing,
      CIStraightenFilter,
      CIStripesGenerator,
      CITemperatureAndTint,
      CIToneCurve,
      CIVibrance,
      CIVignette,
      CIWhitePointAdjust
  </code></pre>
  
  <p>Now i want to apply these filters. Which methods i should use?</p>