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by Jon

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0

That statement means that he/she thinks that the aperture that was used during the capture was too narrow or wide. The aperture's size affects (among other things) the depth of field and the sharpness of the image. It could also mean that the exposure was incorrect and that it could have been compensated for using another aperture size. Lastly statement ...


-1

Any version of CS5 that you download is most likely going to be a cracked version of the pre-release. In other words a ‘late beta’, which will only be 95% there in terms of functionality. All the core stuff will work but there will be little annoyances and bugs throughout the software.If you have installed a Genuine product from Adobe it comes with the ...


0

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 you're ...


2

To clarify what the people above said, the pattern you are seeing probably comes from photographing the gaps between pixels. For various reasons (e.g. camera tilt) they won't be perfectly aligned with the pixels on your CCD and in the resulting image. When downscaling, the algorithm has to decide what color will be a resulting pixel based on colors of ...


3

As other answers state, the effect is called Moire. But why does it happen when you downscale or zoom-out? As prevoiusly stated Moire happens when two patterns interact, specially if the two patterns have a "frequency" (read size of the repeating characteristic) close enough to each other. What happens next is a mathematic relationship between the patterns, ...


4

If the problem only happens when scaling, then that means the scaling is bad. A simple/low quality algorithm was used and therefore the scaled image looks differently than the original. With a quality scaling this does not happen. It would help if you would make the original image available. What software did you use to scale the image? For a quick check ...


9

As your existing (+1) answer says, it's a Moiré pattern. But you see it particularly when the image is scaled. You don't say what does the scaling, but I'm guessing you're just zooming the display, or pasting into Word/Powerpoint/etc., in which case you may benefit from scaling the image using a different method in the GIMP (free), Photoshop (expensive) or ...


38

This is moiré. It occurs because a screen is actually a grid of squares that are being used to make the image. When it ends up trying to be mapped to another grid of pixels (either by being captured by a sensor or by scaling) points of light or pixel data don't line up exactly. Some pixels get 2 pixels of information, some get the border between pixels. ...


2

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 ...


0

It might be, that OpenGL deacitvated. This happened to me, whenever I did a selection and I would have to restart Photoshop CS5. I had to install a much older driver version for my AMD Radeon HD 4600, that did not have those issues.


0

Not all brushes have hardness control. I have just checked in PS 5.1, and with normal, round brushes, I see the red size/hardness indicator, but with other types, e.g. those with many small simultaneous strokes, I neither see the size nor hardness indicator as red, just a simple circle to indicate the target area. You should select the brush, then the ...



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