Why are the tests of IQ250 against CCD-backs taking so long?

[Fine_Art]

Hi,

If you check my posting you would note that I had noise reduction disabled. I wanted to investigate the noise in the sensor and not how it affects noise reduction.

The reasons for that were threefold:

1 - normally try to keep noise recuction low
2 - if you go into noise reduction there will be a an infinite number of possible combinations of options
3 - it is my belief that noise should be kept to minimum, an image with no or little noise is preferable to an image that depends on noise reduction

Best regards
Erik

Then the demosaicing is failing. People may stop noticing because they always seem to get blobs of magenta and cyan in their darks. It's time to reality check that. How many landscapes have blobs of magenta and cyan? It is clearly a product of the software.

[ErikKaffehr]

Hi,

Let's put it this way, Capture One is even worse. If you know better post your own samples, please!

The images below are from Doug's test of the IQ250 vs the IQ 260, and processed in Capture One, with noise reduction set to zero and defaults.


Best regards
Erik

Then the demosaicing is failing. People may stop noticing because they always seem to get blobs of magenta and cyan in their darks. It's time to reality check that. How many landscapes have blobs of magenta and cyan? It is clearly a product of the software.

[Doug Peterson]

The images below are from Doug's test of the IQ250 vs the IQ 260, and processed in Capture One, with noise reduction set to zero and defaults.

Notably the screen grabs of the IQ250 and IQ260 files Erik just posted are with a 4 stop push (as noted elsewhere).

[Fine_Art]

This is RT with noise reduction off. I uploaded this for people to see more natural color not for noise reduction which I never touched based on ISO 100 file.
I appreciate the enthusiasm of the original image; I found it a bit garish in color.

http://farm3.staticflickr.com/2806/12463985743_f1c563964f_o.jpg

I don't see the point in a 4 stop push on an interior lit library. Taking the darkest parts of the scene to bright sunlit is just a software game. You would never do that with your real images.

[ErikKaffehr]

Hi Doug,

It is pretty much my way of comparing DR. Expose for the highlights and see how much noise there is in the shadows. That is actually what DR is about.

That said, I very seldom feel limited by DR.

Best regards
Erik

Notably the screen grabs of the IQ250 and IQ260 files Erik just posted are with a 4 stop push (as noted elsewhere).

[Fine_Art]

Hi Doug,

It is pretty much my way of comparing DR. Expose for the highlights and see how much noise there is in the shadows. That is actually what DR is about.

That said, I very seldom feel limited by DR.

Best regards
Erik

Ok, now I understand what you are doing.

Here is the same area cropped that you selected. I just turned on NR 30, Red channel 30. Impulse NR on. Nothing fancy, something anyone would try as a starting position.

[ErikKaffehr]

Hi,

Which image and what converter?

Best regards
Erik

Ok, now I understand what you are doing.

Here is the same area cropped that you selected. I just turned on NR 30, Red channel 30. Impulse NR on. Nothing fancy, something anyone would try as a starting position.

[Fine_Art]

That is the 0 shift, 0 rise IQ250 shot. The conversion is RT. 4.0.11.79

[ErikKaffehr]

Thanks a lot!

Erik

That is the 0 shift, 0 rise IQ250 shot. The conversion is RT. 4.0.11.79

[Fine_Art]

Any other conversions? I would like to see a more neutral C1 interpretation.