Questions tagged [anti-aliasing]
A phenomena that exhibits or arises due to signal interference as signals of similar frequency interact in a destructive manner. Common examples in photography are "jaggies" along the edges of strait or lightly curved lines, and "moire" when high frequency patterns are resolved by a sensor without an optical low pass filter.
16
questions
2
votes
4
answers
3k
views
Can the antialiasing filter be removed to get sharper images?
Assuming I don't care about moire and would like to have my images as sharp as possible, would it make sense to remove the antialiasing filter from my DSLR? Is it something that can be done at home or ...
- 2,966
13
votes
6
answers
3k
views
Does aliasing occur in film photography?
I have observed aliasing with digital photos and videos. While film does not have infinite resolution, it appears that film grain does not have the regularity of a digital sensor, so aliasing may not ...
- 235
0
votes
3
answers
422
views
How can I export upscaled images from Lightroom with each pixel just a large square block?
I want to be able to export an image from Lightroom at a higher pixel count than the original— that is, instead of each pixel of the image being one pixel by one pixel, they are, say ten by ten pixels....
- 101
6
votes
1
answer
1k
views
What is a low pass filter, and does a camera need to have one? [duplicate]
I have read on some camera reviews that they don't have a low pass filter and therefore they have sharper images.
Since I am a novice, I wonder what is a low pass filter and is it good to have one on ...
- 203
4
votes
2
answers
441
views
Is the anti alias filter really a blurring filter?
I'm trying to dig into the nature of how the anti aliasing filter works. This is of importance to me as I need to capture small details at the very edge of the resolution limit of the cameras lens as ...
- 143
-1
votes
1
answer
269
views
How to know if a digital camera is doing anti-aliasing filtering? [closed]
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?
user32027
1
vote
3
answers
385
views
Do you lose the increased sharpness of not having an AA filter if downscaling?
I just read the DPreview of the Nikon 5300, and it mentions that its new 24-MP sensor doesn't have an anti-alias (AA) filter, allowing for higher sharpness.
I was wondering if you would see the ...
- 2,209
0
votes
1
answer
354
views
Has Canon released any point and shoot cameras without optical low-pass filters?
Do either the Canon PowerShot SD880 IS or the S100 have anti-aliasing filters?
If so, has Canon announced any P&S model(s) without OLPFs?
3
votes
5
answers
782
views
Are images taken with newer DSLRs sharper than those taken with old ones?
When I compare images that I shoot with my 30D against images shot with a friend's 600D, the 600D consistently produces sharper images than my 30D. This is true even when the images are viewed at the ...
- 2,366
5
votes
2
answers
2k
views
How does an anti-alias filter affect image quality other than reducing Moire?
The commonly stated trade-off for using an anti-alias filter or not is that it diminishes the risk of moire while also reducing potential sharpness. This is what I have seen myself and in many online ...
- 103k
6
votes
3
answers
3k
views
Why only recently are digital cameras being sold without low-pass filters?
It seems as though it is becoming more common for new digital cameras to come without low-pass filters. I learned quite a bit from reading the excellent answer here: What is the difference between the ...
- 46.5k
13
votes
4
answers
13k
views
Why is a physical anti-aliasing filter still needed on modern DSLRs?
I understand the purpose of the anti-aliasing (AA) filter is to prevent moire. When digital cameras first emerged an AA filter was necessary to creat enough blur to prevent moire patterns. At that ...
- 175k
7
votes
3
answers
12k
views
What is Aliasing and Anti-Aliasing?
What is Aliasing and Anti-Aliasing? Is it a bad thing to have in an image? If so how to avoid it?
If you can describe your answer using examples then that would be great.
- 6,497
7
votes
1
answer
772
views
How does the new layout used in Fujifilm X-Pro1 sensor improve image quality?
One of the allegedly big advantages of Fujifilm X-Pro1 is its new color filter array layout, which does not require anti-aliasing filter in front of it. In theory, this could mean notable improvement ...
- 31.8k
11
votes
3
answers
888
views
How does the D800E reverse the effect of an antialiasing filter by adding another filter?
According to http://mansurovs.com/nikon-d800-vs-d800e the D800E differs from the D800 in that one of the layers of the filter reverses the effect of the initial low-pass filter. How does this work?
...
- 2,048
10
votes
3
answers
3k
views
What is the difference between the newly launched Nikon D800 and D800E?
These two cameras have been announced by Nikon just this month, and they appear to be quite the same. However, getting the D800E instead of the D800 costs around $300 more. I don't know why that is ...
- 965
Hot Network Questions
- What is the significance of the sun visor with “Need help please call police”?
- Question regarding the definition of linearization of line bundles
- Is it normal for a junior programmer to be alone in a project?
- How can I optimize my familiar as a pack-mule?
- Which version of The Curse of Fenric is available on BBC iPlayer?
- Questionable peer review practice in top-tier journal
- Do the qualities of a vowel determine its semivowel’s place of articulation?
- How do I find the arctan of a complex number?
- Logarithm of a bounded operator
- Doubts: continuity VS existence of the limit
- Undefined control sequence if I add % before gdef
- What happens to non-cooperative shareholders when a company goes private?
- Macro to remove all non-numeric characters from its argument
- For touring bicycles, how much stronger is a 26'' vs 27.5'' wheel
- Why are volatile objects so difficult to work with in C++?
- Are stable isotopes ever used in pharmaceuticals?
- One of PCs backstabbed a powerful ally. How do I punish them without seeming like singling them out?
- Why does a plastic bag rip when it is raised to a higher position when being held but not when it is stationary?
- Accumulated instance count of each list element
- Wise saying in the Netflix series 'Shtisel'
- Is it dangerous to install a covered exterior outlet without a junction box?
- Optocoupler as a switch for composite video sources
- Sci-fi / Action movie involving portals appearing in the desert and soldiers accidently passing through into another dimension (last 10 years)
- Did Iraq declare outright support for Hamas after Oct 7?