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Is there any way to know if a cellphone digital camera is automatically doing anti-aliasing filtering? Is there any way to have a control over it?

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    Why do you care? I very much doubt the AA filter or lack thereof is a significant factor in cellphone camera IQ. – Philip Kendall Aug 25 '14 at 15:47
  • Please see my last comment. I explained why I care :-) – user32027 Aug 25 '14 at 16:08
  • And I stand by my comment that an AA filter is not significant in cellphone cameras when compared with the vast amounts of noise reduction all phones apply to their images. – Philip Kendall Aug 25 '14 at 16:16
  • This question appears to be off-topic because it is about programming image manipulation software and not specifically about photography. – John Cavan Aug 25 '14 at 17:30
  • I suspect cell phones do not need AA filters. The pixel density in these cameras is so high that they suffer from diffraction even at the largest aperture opening. The diffraction plays the same role as AA filter. – MirekE Aug 25 '14 at 19:05
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The best way to find out if a cell phone is using an anti-aliasing filter is to ask the manufacture.

There is no way to control it. The filter is a physical object, not a program. It sits in front of the sensor.

That being said, I would guess that there is no AA filter because of the small size of the pixels. But that's just a guess. Someone who knows for sure should be answering in the near future.

  • But is it possible to get a clue about it from camera specifications? Because I need to know it dynamically( programmatically ), so asking manufacture is not an option.Thanks again. – user32027 Aug 25 '14 at 15:48
  • I'm guessing you won't get it in the specs because it's too technical for most consumers. – JenSCDC Aug 25 '14 at 15:50
  • Well, in theory a cellphone could do something like the Pentax K-3 and have a variable AA filter. I don't anyone will ever implement that though! – Philip Kendall Aug 25 '14 at 15:50
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    @anga: What problem are you trying to solve? It is a lowpass filter, so some frequencies do not get through. No noticeable difference I guess in your case. – TFuto Aug 25 '14 at 15:56
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    @AndyBlankertz - For Pentax, the anti-shake mechanism is on the sensor, they simply move it to emulate strengths of AA or turn it off. – John Cavan Aug 25 '14 at 17:22