T6i / T6s Dynamic Range Test vs Nikon D5500

[Aglet]

On the side did you try to correct both tints in the shadows noise, how can you correct typical Canon's red and now seems to be introduced a green cast to. What do you end up with after correcting both colors?

Canon's red shadow tint is the noise that Exmor sensors don't add to the image.

Some raw processors (Iridient) will allow you to make a simple correction for this problem that works pretty well.

 

[Aglet]

..make all things as equal as possible, shoot a series of identical photos - then go pixel peeping.

You will not find any real practical differences. There will be no ISO and DR differences visible at print size. At 100%, 1:1 -- you may see some minor differences only in less than 5% of the total image (the most extremely dark spots, or brightest spots). The areas where the DR is coming into play. The difference is small. And of that, the difference will not be visible in any kind of practical output.

if you are printing LARGE then you will be pixel-peeping the final result.
It's more convenient to start with a cleaner raw file than to muck about with NR to fix the problem areas produced by noisy sensor systems.

 

[privatebydesign]

On the side did you try to correct both tints in the shadows noise, how can you correct typical Canon's red and now seems to be introduced a green cast to. What do you end up with after correcting both colors?

Canon's red shadow tint is the noise that Exmor sensors don't add to the image.

Some raw processors (Iridient) will allow you to make a simple correction for this problem that works pretty well.

No it isn't.

 

[jrista]

On the side did you try to correct both tints in the shadows noise, how can you correct typical Canon's red and now seems to be introduced a green cast to. What do you end up with after correcting both colors?

Canon's red shadow tint is the noise that Exmor sensors don't add to the image.

Some raw processors (Iridient) will allow you to make a simple correction for this problem that works pretty well.

No it isn't.

Canon sensors do have a lot more red noise than Exmor sensors. When you dig into the shadows a lot, that becomes quite apparent. Use of VNG debayering reduces the problem a little, but there is more red color noise in Canon data, whereas there is hardly any color noise at all in Exmor data.

 

[jrista]

@Michael: Nice work. It seems you've gotten a handle on using the step wedge. I think your tests are very solid. I see an improvement in noise patterns in the T6i, but sadly, outside of that, it does appear to be the same old thing. I wonder where all that noise is coming from...if it's just the ADC units, or some specific design choice...

 

[privatebydesign]

On the side did you try to correct both tints in the shadows noise, how can you correct typical Canon's red and now seems to be introduced a green cast to. What do you end up with after correcting both colors?

Canon's red shadow tint is the noise that Exmor sensors don't add to the image.

Some raw processors (Iridient) will allow you to make a simple correction for this problem that works pretty well.

No it isn't.

Canon sensors do have a lot more red noise than Exmor sensors. When you dig into the shadows a lot, that becomes quite apparent. Use of VNG debayering reduces the problem a little, but there is more red color noise in Canon data, whereas there is hardly any color noise at all in Exmor data.

@Michael: Nice work. It seems you've gotten a handle on using the step wedge. I think your tests are very solid. I see an improvement in noise patterns in the T6i, but sadly, outside of that, it does appear to be the same old thing. I wonder where all that noise is coming from...if it's just the ADC units, or some specific design choice...

Well we discussed the various pitfalls of these comparisons when Michael first got his step wedge. And we still are not addressing the camera calibration issue, so any talk of 'comparisons' of colours are entirely bogus.

 

[Aglet]

Well we discussed the various pitfalls of these comparisons when Michael first got his step wedge. And we still are not addressing the camera calibration issue, so any talk of 'comparisons' of colours are entirely bogus.

Let's make sure we aren't conflating color calibration with the red splatter and FPN that the Canon sensor system infuses into the raw file. Where the red noise isn't, the deep shadows seem otherwise somewhat neutral.

 

[Hjalmarg1]

Thanks for sharing this information. It'll help some here to take decisions