What is an Optical Low Pass Filter?

Moderator: Stany Buyle

What is an Optical Low Pass Filter?

Postby Stany Buyle » Thu 18 Jul 2013 18:30

Explained on the Nikon website: What is an Optical Low Pass Filter?

And more about this on the Nikon website:
...Anti-aliasing filters are incorporated in the low-pass filter to reduce the effect of aliasing and moiré patterns that can occur in digital images. Aliasing and moiré patterns are more noticeable with subjects that include high-frequency (finely-detailed) patterns. A side effect of incorporating an anti-aliasing filter is that it reduces resolution within the image. Removing the anti-aliasing properties from the low pass filter results in improved image resolution, as the light is transmitted without being filtered through the lens onto the photodiodes in the image sensor. All other D800E functions and performance are the same as the D800; colour reproduction characteristics, infra-red coatings, anti-reflective coatings and image sensor cleaning functions are the same on both cameras. ...


In relation to D800 vs D800e:
On Nikonimaging nps I found a nice diagram to explain better:

Image
Image
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Re: What is an Optical Low Pass Filter?

Postby GAshby » Thu 14 Aug 2014 18:12

Related to your topic, an interesting article about this subject on the website of B&H
Discerning the Differences between the Nikon D800 and D800E
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