What would the FFF have to do in order to be competative?

Scottelly wrote:

Stillton wrote:

Doppler9000 wrote:

Stillton wrote:

Doppler9000 wrote:

Stillton wrote:

Doppler9000 wrote:

Stillton wrote:

"This looks like aliasing to me…"
It is mostly color blotching because it is showing on is400, but not on is100.

It was ISO 100.

I meant, this one. It was stated that this green-magenta blotching was the result of aliasing which is not the case. It is pretty obvious that unlike Bayer, foveon, especially 1:1:1 version of the tech, does not have that rainbow aliasing. This is what my previous post was comparing.

Yes, victorgv made this point 19 hours ago, and I agreed.
Do you think the subject you took the quote from is aliasing or color blotching (or processing)?

Disagree....

Disagree with what? I asked you if you thought it was aliasing, color blotching or processing. Do you disagree with all three? If so, what’s you thesis?

Because if that was the case, in this example I am attaching below, it would be all going rainbow colors in the center of that circle. Bayer sensor does show that, but even Foveon Q ( merrill even more so) behaves really well there, with no color aliasing. Brightness aliasing is still present because it is innate feature of any discrete/pixelated measuring system..

This looks like aliasing, but then it should show itself in every aliasing-prone scenario but it just doesnt. Instead it looks like it is either some chromatic aberration or some other effect.

Also, even individual lines below show red fringe colors... this is not how aliasing works. It needs repetitive patterns smaller than a pixel size to create those rainbow colors. This is not possible with single lines and especially not possible on a 1:1:1 sensor. This clearly is something else other than just a typical rainbow-colored aliasing....

I literally wrote a whole paragraph on what I disagree with there.
In one of the images (the one with is400 from Foveon sensor) it was clearly color blotching. On the converging lines though, it looked like fringe aberrations or some other such effect, since it was visible even on single lines.

Foveon sensor does not have a process by which color aliasing is generated, which is easily demonstrated by the image of "circles" with the center generating color aliasing in Bayer sensors configurations, but not in Foveon ones.

If THAT test does not generate rainbow pattern on foveon, nothing will.

Hence, it cant be a case of simple color aliasing and it has to be something else. This is what my whole logic/point was.

If you guys think it is color aliasing, that is fine, but you have to explain why "circle aliasing" test does not show that effect, while simple lines test - supposedly does.

This is why I said that color aliasing does not work like that.

I totally agree with you. I've shot lots of my own test images with my own cameras that have Foveon sensors, and I've never seen color moire, but I've seen enough real life examples from my own non-Foveon cameras (i.e. my Nikon D810), that I know color moire is a problem with "Bayer" sensor cameras. I'm hoping to get a 40 MP Fuji in the next few months, and I'll try to do a comparison using 20 MP shots from a Foveon (Quattro) sensor. When I do, I'll see if I can make some photos with color moire using the Fuji.

Interestingly enough, X-tran handles color aliasing a bit better than Bayer. I am guessing, irregular sized pixels help with breaking up aliasing pattern generation.