docmaas
Veteran Member
These two new technologies are embedded in the new Bionz processor. Does this mean the modifications to the captured data take place before/during creation of the raw image?
Mike
Mike
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Sony Detail reproduction technology and diffraction-reducing technology
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Mark S Abeln
Veteran Member
According to Sony’s website, the Exmoor sensor itself does noise reduction to the analog and digital raw data. The Bionz is subsequent to this, at least according to the documentation.
Those technologies appear to be regular signal processing techniques including sharpening. It might be difficult to bake those into the raw file; perhaps they are just found in the camera JPEG?
docmaas
Veteran Member
You may be correct. If so a raw file developed in a non-sony developer should not show the same detail as a sony jpg; I'm pretty sure that the sony developer does enhance the image even when set to neutral on all parameters.
I shot some koren targets with my A7r which also has the technology I don't have ACR but I do have raw developer. I can do a little comparo.
Mike
I shot some koren targets with my A7r which also has the technology I don't have ACR but I do have raw developer. I can do a little comparo.
Mike
l_d_allan
Veteran Member
We normally think of RAW as minimally processed and uncompressed. My readings of A7(r) reviews is that Sony includes compression and some NR into the RAW's. That would suggest they would not be adverse to further "cooking the RAW's" with such technology.
My understanding is that it can make for difficulties in "apples vs apples" comparisons to other cameras.
BertIverson
Veteran Member
Analog NR in the sensor. Digital compression after ADC.
That might be quite difficult. As Mark says above:
"Those technologies appear to be regular signal processing techniques including sharpening. It might be difficult to bake those into the raw file; perhaps they are just found in the camera JPEG?"
Bert
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Truthiness
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To be more precise, all CMOS sensors (apart from Foveon) perform so called 'correlated double sampling' (CDS). This removes reset-noise (kTC noise) from the signal without damaging the information of the signal. CDS isn't really noise reduction, certainly not in the way noise reduction is normally though of, but kind of noise removal where one noise componen is eliminated without negative effects.
The diffraction reduction is likely deconvolution of the signal. It will increase image noise levels somewhat and requires a good point spread function (PSF) so it'll likely work only with Sony (and Zeiss) lenses. Ideally the camera should add the PSF as metadata into the raw file. The second best option is an option to apply the deconvolution filter to the raw file itself, but have an option to disable this.
PSP where? Moreover, PSP is hard to measure, and cannot be used directly. However, storing tangential/saggital MTF curve at 4–6 different distances from the center would be nice — but publishing it instead would be as good as this…
Ilya
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