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03-03-2015, 02:30 PM   #1
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Anti-aliasing filter?

What does it mean and how will it affect me when I buy a new K-3 body? I Googled it and I came away completely befuddled. More technical lingo that I can handle. Can anyone give me an explanation that a simpleton can understand? What PRACTICAL difference will it make in my images with the K-3 vs my current K-50?


Thanks for any help you can provide for this thick-skulled old timer.

03-03-2015, 02:36 PM   #2
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This page of our K-3 review should answer all your questions

Pentax K-3 Review - Moire | PentaxForums.com Reviews

Let me know if there's anything you're still unsure about after reading it.

Adam
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03-03-2015, 02:38 PM   #3
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QuoteOriginally posted by Dewman Quote
What does it mean and how will it affect me when I buy a new K-3 body? I Googled it and I came away completely befuddled. More technical lingo that I can handle. Can anyone give me an explanation that a simpleton can understand? What PRACTICAL difference will it make in my images with the K-3 vs my current K-50?


Thanks for any help you can provide for this thick-skulled old timer.
Not much difference unless you have the lenses to support it. Basically, the AA filter blurs the image slightly so that you don't get moiré in your images. These are show up as jagged lines on things like suit coats or other materials that have very small close parallel lines and can produce false colors that are not in the material.

Without the filter, you leave yourself open to these jagged lines and false colors. Luckily, if you notice moire showing up in your photos, you can switch on the AA simulator and get rid of them. Or if your lens is not that sharp, it might not matter since the lens would act as a slight blur filter.
03-03-2015, 02:38 PM   #4
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Potentially sharper images but more susceptible to moire in images, which isn't all that common. Even there, there is a built-in AA simulator that can help resolve it.

The AA filer helps mitigate the effect of tight, dense patterns that can result in wavy lines called moire patterns. It does this by blurring the image a bit at the expense of sharpness. Removing the AA filter means that the blur is removed resulting in a sharper image. Again, it is more susceptible to moire, but the selectable simulator in the camera can be employed to mitigate that.

It's a trade off that's worth having. And, even there, the trade off is your choice.

03-03-2015, 05:10 PM   #5
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QuoteOriginally posted by Spodeworld Quote
Potentially sharper images but more susceptible to moire in images, which isn't all that common. Even there, there is a built-in AA simulator that can help resolve it.

The AA filer helps mitigate the effect of tight, dense patterns that can result in wavy lines called moire patterns. It does this by blurring the image a bit at the expense of sharpness. Removing the AA filter means that the blur is removed resulting in a sharper image. Again, it is more susceptible to moire, but the selectable simulator in the camera can be employed to mitigate that.

It's a trade off that's worth having. And, even there, the trade off is your choice.

Thank you very much for your most informative response. It's much more understandable than a drab, technical-jargon-filled review. Your answer was EXACTLY what I was hoping to get!
03-03-2015, 07:09 PM   #6
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Going from the K-30 to the K-S1, I find it sharpens every lens, Dewman! :-)
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