Question: I'm trying to apply some `CIFilters` to a sequence of `CIImage` and would like to display them in realtime (at least 20-30 fps).

The images are drawn on a `GLKView` through a EAGL backed `CIContext`

When I draw my images with this code (in the update method) I get ± 20 fps (which is already a bit tight):

```
image = [image imageByApplyingTransform: CGAffineTransformMakeScale(@scale, @scale)];
[self.capture_controller.core_image_context drawImage:image atPoint: [0, 0] fromRect: image.extent];

```

If I add just one simple filter before it drops to 10-12 fps (`compo` is a `CISourceOverCompositing` filter for which the inputImage is set once for all):

```
[self.compo setValue:image forKey: @"inputBackgroundImage"];
image = [self.compo outputImage];

```

Is there any way to get better performances from CoreImage? I think UIImageView can display a sequence faster so it should be possible.

Answer: 
See the WWDC 2012 videos on CoreImage for information on how to get performance. By default the performance is limited by factors like color management. To get best performance turn off color management when you create the CIContext, create the context only once, and create the filters only once.
So, from what I gathered and from Jeshua comments, performances are (obviously) bound the device and there's not much to do about it if I use CIFilters.