Photoclubalpha

Barry, those 7fps must be MLU starting 2nd frame and on... Cheer up! Good Point - "salvo shooting" can act as MLU (at the price of one un-sharp photo at the begining of the sequence, but it's quite limited in long exposures - but in those I need the MLU. I haven't heard that 'speed priori...

bfitzgerald wrote:I've never known anyone need 7fps for portraits

Barry, those 7fps must be MLU starting 2nd frame and on... Cheer up!

My guess is neither of leaked model no's holds any surprises.

If there really is something big to happen this year, that mysterious something is quite leak-proof for now...

Step 2. Derive G channel from (R+G)-R and (B+G)-B. Great proposal :lol: Is the in-principle ability of the two-layer sensor to reconstruct images, irrespective of CA, still an issue for you? The 'principle' is no problem obviously. Yet, you simply do not have neither the 'R' nor 'B' co-posited in y...

[Step 2. Derive G channel from (R+G)-R and (B+G)-B. Great proposal :lol: You kill your S/N ratio right away. Your derived G's would have about sqrt(3) more noise than Bayer from just the photon noise. Then you pile up systematic errors due to inequality of sensitivities of R and B in pure channels ...

Agorabasta is pointing out that if R and B pixels, in a second layer, are used in any way to derive luminance values then a perfectly apochromatic lens would be needed. Basically, you are right. The most important thing is to register the green channel with a dedicated sensel array, without having ...

Again, you're forgetting the second layer of Red and Blue and how demosaicing works. E.g. A cyan pixel in the first layer is paired with a red pixel directly underneath, a yellow with a blue. I'm not forgetting nothing, and Ignorance is not my second name :lol: If two spatially divergent signals ar...

sury wrote:Difference gave me a black screen. Is there another method of "subtracting"?

Check the histo - if there's something in the shadows, then stretch it out.
Should work.

You're forgetting the second (primary) layer which also has to be taken into account when doing interpolation/reconstruction of the final image. There's nothing magical about CA. If it's there at the image plane, it'll be treated exactly like any part of the image. I'm not really following you when...

Modern low-pass filters do not simply blur (if that was required, it could more easily be done by a focus offset linked to focal length and aperture data). They are based on thin layer coating diffraction, and produce an exact blur pattern from incoming rays which is tuned to the standard de-Bayer ...

While we are discussing the improbabilities, here's one more thing that's very easy to implement though totally unrelated to matters discussed above. As long as a cam has got the sensor-shift drive (SSS or whatever), they could've got rid of the ugly optical LPF. All you have to do is simply shake ...

David Kilpatrick wrote:The pic is scruffy, no desire to post it - the answer is that althoughthe X Fine must have more detail, I honestly can't see it even at 100 per cent.

You could resave XFine to Fine in Sony junk software, then open in some editor and subtract one from the other. The result is quite telling.

Not sure about this pattern being any worse for resolution loss due to CA. It shouldn't be any worse than a conventional Bayer. Kodak's trumpeted "white pixel" pattern does have the problem that the white pixels would saturate faster than the (occasional) non-white pixels scattered throug...

In that situation, you might as well just read out the sub-pixel values individually and end up with 49 times the pixel resolution in the final image :-). If you want to achieve full RGB per output image pixel, you can simply downsample a Bayer image by a factor of 2 linear (4 area). By keeping the...

That would be amazing if it could be done, RGB direct from the sensor. It has been possible for ages. The P&S sensor density on a large sensor can do it easily. The main problem is the very low yield of fabbing. The minimum pixel-array better be 3x3, means you face about nine times higher defec...