What is moiré? How can we avoid it? - Photography Stack Exchange \$\begingroup\$ I recently purchased a Nikon D7100 with 24 3 mp and they have done away with the aa filter altogether to sharpen up the image,I have taken about 200 pictures and so far found no evidence of moire,however I cannot see any improvement of sharpness over my old Nikon D90 when displaying them on my pc!Perhaps you only notice the increase of sharpness when blowing them up or its all
artifacts - What caused this pattern of lines (moire?) in this picture . . . Certainly if you used the term moire in relation to the image above photographers would understand The reason is that, to get the image to print, the printers have used a technique called halftone In this process an image is turned into dots of differing sizes and or spacing that our eyes generally don't see as the dots are quite small
moire - Does the human eye see moiré? - Photography Stack Exchange Moire is a kind of "aliasing" - an effect where something is seen (or heard) incorrectly because the frequency of the source is too high for the sensor (in a picture high frequency is caused by repeating patterns where the individual pattern is too small to be recorded)
astrophotography - What causes and how can I avoid this moiré pattern . . . Its the moire like pattern that results from stacking the individual photos The photos were taken at 18mm, with a 30sec exposure, an ISO of 4000 and an aperture of f5 6 I first tweaked the exposure and reduced noise in Adobe Bridge, then imported the photos as layers to Photoshop CS5 where I used the lighten filter on each layer to show the
How To Reliably Trigger Moire? - Photography Stack Exchange What is the most reliable way to trigger moire artifacts in an image straight out of a digital camera? I know that resizing an image can cause it but I want to see it all full-resolution and be able to do it reliably so that I can compare two nearly identical cameras that I have here, the Pentax K-5 IIs and K-5 II which differ only in the lack
Why do photos of digital screens turn out the way they do? While there are application-specific names for what's going on (e g "moire") the fundamental cause is undersampling aliasing The original image has high-frequency content in it (tiny pixel boundaries) and, by using a wrong downscaling algorithm, you're point-sampling it with a lot fewer samples than what are necessary to reproduce the signal
image processing - Photography Stack Exchange For older cameras with low resolution sensors (and hence low frequency sampling) moire was a serious problem with lots of types of image detail so AA filters were strong (nothing to do with limited processing power) Now we have much higher sampling frequencies, it takes much higher frequency image details for moire to show up
post processing - What are the strange curved lines appearing on fabric . . . If you search for something like remove moire in photoshop you'll find plenty of articles with advice for removing Here's one from photographylife com An alternative is to use a photo editing program like Lightroom that has a tool for removing moiré built-in
Blur each pixel independently on sensor to reduce moire effect In fact, moire occurs in monochrome sensors too which have no sub-pixels The matrix of pixels form a fixed grid to sample an image formed by incoming light and anytime that image has a higher frequency than the sampling from the sensor, it risks causing aliasing which appears as moire for high-frequency patterns