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CA/PF Response from Carl...Zeiss!

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Jogger

Jogger

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I forget what my orginal email was...I did mention Phil's review and provided a link to it...here is the response I just got:

Thank you for your e-mail.

Purple fringing with the Sony F-828 occurs only in spots with significant
overexposure. It is caused by the image processing algorithms used in this
camera. The lens does not contribute to this effect.
Chromatic aberration is something completely different. The term "chromatic
aberration" is incorrectly used in the test report you mention. The author
of that test report confused "chromatic aberration" with "color fringing".
Chromatic aberration occurs nowhere in the sample photos of that test
report.
The purple fringing might be corrected by Sony in a future software or
firmware update.

Best regards,
 
then it's GREAT news!

Thanks Jogger!
Hendra
Jogger said:
I forget what my orginal email was...I did mention Phil's review
and provided a link to it...here is the response I just got:

Thank you for your e-mail.

Purple fringing with the Sony F-828 occurs only in spots with
significant
overexposure. It is caused by the image processing algorithms used
in this
camera. The lens does not contribute to this effect.
Chromatic aberration is something completely different. The term
"chromatic
aberration" is incorrectly used in the test report you mention. The
author
of that test report confused "chromatic aberration" with "color
fringing".
Chromatic aberration occurs nowhere in the sample photos of that test
report.
The purple fringing might be corrected by Sony in a future software or
firmware update.

Best regards,
Click to expand...
 
I hope this issue can be solved by just updating the firmware/ I hope so, really hope so. So, what's the difference between CA and PF?
Petteri Sulonen said:
Jogger said:
I forget what my orginal email was...I did mention Phil's review
and provided a link to it...here is the response I just got:
Click to expand...
[snip]

...there's a lot of corporate finger-pointing going on.

If it isn't lens-related, I'd be very interested to hear how come
stopping down the lens has a significant effect on it.

Petteri
--



Portfolio: [ http://www.seittipaja.fi/index/ ]
Pontification: [ http://www.seittipaja.fi/ ]
Click to expand...
 
ive argued that point over and over lol, its nice to hear it from ziess
Jogger said:
I forget what my orginal email was...I did mention Phil's review
and provided a link to it...here is the response I just got:

Thank you for your e-mail.

Purple fringing with the Sony F-828 occurs only in spots with
significant
overexposure. It is caused by the image processing algorithms used
in this
camera. The lens does not contribute to this effect.
Chromatic aberration is something completely different. The term
"chromatic
aberration" is incorrectly used in the test report you mention. The
author
of that test report confused "chromatic aberration" with "color
fringing".
Chromatic aberration occurs nowhere in the sample photos of that test
report.
The purple fringing might be corrected by Sony in a future software or
firmware update.

Best regards,
Click to expand...
 
Jogger said:
I forget what my orginal email was...I did mention Phil's review
and provided a link to it...here is the response I just got:

Thank you for your e-mail.

Purple fringing with the Sony F-828 occurs only in spots with
significant
overexposure. It is caused by the image processing algorithms used
in this
camera. The lens does not contribute to this effect.
Chromatic aberration is something completely different. The term
"chromatic
aberration" is incorrectly used in the test report you mention. The
author
of that test report confused "chromatic aberration" with "color
fringing".
Chromatic aberration occurs nowhere in the sample photos of that test
report.
The purple fringing might be corrected by Sony in a future software or
firmware update.

Best regards,
Click to expand...
 
I wonder what Phil has to say about this, very interesting news...
Jogger said:
I forget what my orginal email was...I did mention Phil's review
and provided a link to it...here is the response I just got:

Thank you for your e-mail.

Purple fringing with the Sony F-828 occurs only in spots with
significant
overexposure. It is caused by the image processing algorithms used
in this
camera. The lens does not contribute to this effect.
Chromatic aberration is something completely different. The term
"chromatic
aberration" is incorrectly used in the test report you mention. The
author
of that test report confused "chromatic aberration" with "color
fringing".
Chromatic aberration occurs nowhere in the sample photos of that test
report.
The purple fringing might be corrected by Sony in a future software or
firmware update.

Best regards,
Click to expand...
--
Marcelo Paoli Graciano
Editor - 50mm Photography - Brazil
 
I suppose CZ is blaming that on Sony too!

Paul
Jogger said:
I forget what my orginal email was...I did mention Phil's review
and provided a link to it...here is the response I just got:

Thank you for your e-mail.

Purple fringing with the Sony F-828 occurs only in spots with
significant
overexposure. It is caused by the image processing algorithms used
in this
camera. The lens does not contribute to this effect.
Chromatic aberration is something completely different. The term
"chromatic
aberration" is incorrectly used in the test report you mention. The
author
of that test report confused "chromatic aberration" with "color
fringing".
Chromatic aberration occurs nowhere in the sample photos of that test
report.
The purple fringing might be corrected by Sony in a future software or
firmware update.

Best regards,
Click to expand...
 
Petteri Sulonen said:
If it isn't lens-related, I'd be very interested to hear how come
stopping down the lens has a significant effect on it.

Petteri
Click to expand...
Another effect of stopping down the lens is the angle of incidence that the light hits the sensor is reduced. That probably cuts down on the leakage to adjacent cells whether across the cell boundaries or refracted from the micro lenses. Remember you've essentially got two green sensors for every reb+blue sensor so any blooming is going to show as an excess of red+blue (purple) as the green/emerald sites leak 4 times the light into the red+blue sites as the red blue sites leak into the green/emerald. I'm afraid this can only be corrected by better isolation and that requires a physical modification to the sensor chip. Don't expect a software change to fix it, only cover it up like the photoshop fix.
 
PDM wrote:

I also sent complain to Zeiss and asked them to remove the "Carl Zeiss" on F828. :))

Andy
 
no thats the lens lol
PDM said:
Paul
Jogger said:
I forget what my orginal email was...I did mention Phil's review
and provided a link to it...here is the response I just got:

Thank you for your e-mail.

Purple fringing with the Sony F-828 occurs only in spots with
significant
overexposure. It is caused by the image processing algorithms used
in this
camera. The lens does not contribute to this effect.
Chromatic aberration is something completely different. The term
"chromatic
aberration" is incorrectly used in the test report you mention. The
author
of that test report confused "chromatic aberration" with "color
fringing".
Chromatic aberration occurs nowhere in the sample photos of that test
report.
The purple fringing might be corrected by Sony in a future software or
firmware update.

Best regards,
Click to expand...
Click to expand...
 
that sounds like you hit the nail on the head
Trials Photographer said:
Trials Photographer said:
If it isn't lens-related, I'd be very interested to hear how come
stopping down the lens has a significant effect on it.

Petteri
Click to expand...
Another effect of stopping down the lens is the angle of incidence
that the light hits the sensor is reduced. That probably cuts down
on the leakage to adjacent cells whether across the cell boundaries
or refracted from the micro lenses. Remember you've essentially got
two green sensors for every reb+blue sensor so any blooming is
going to show as an excess of red+blue (purple) as the
green/emerald sites leak 4 times the light into the red+blue sites
as the red blue sites leak into the green/emerald. I'm afraid this
can only be corrected by better isolation and that requires a
physical modification to the sensor chip. Don't expect a software
change to fix it, only cover it up like the photoshop fix.
Click to expand...
 
alonewolf85 said:
Petteri Sulonen said:
If it isn't lens-related, I'd be very interested to hear how come
stopping down the lens has a significant effect on it.
Click to expand...
when you stop down the lens you let less light in,there fore you do
not overload the sensor and it gives less purple
Click to expand...
Sorry, that doesn't wash. In order to get the same exposure, you need to get the same amount of light to the sensor: if you stop down, that means you need to leave the shutter open longer. The sensor doesn't care whether the light comes in all at once or over a longer time.

Petteri
--



Portfolio: [ http://www.seittipaja.fi/index/ ]
Pontification: [ http://www.seittipaja.fi/ ]
 
Trials Photographer said:
Trials Photographer said:
If it isn't lens-related, I'd be very interested to hear how come
stopping down the lens has a significant effect on it.

Petteri
Click to expand...
Another effect of stopping down the lens is the angle of incidence
that the light hits the sensor is reduced. That probably cuts down
on the leakage to adjacent cells whether across the cell boundaries
or refracted from the micro lenses. Remember you've essentially got
two green sensors for every reb+blue sensor so any blooming is
going to show as an excess of red+blue (purple) as the
green/emerald sites leak 4 times the light into the red+blue sites
as the red blue sites leak into the green/emerald. I'm afraid this
can only be corrected by better isolation and that requires a
physical modification to the sensor chip. Don't expect a software
change to fix it, only cover it up like the photoshop fix.
Click to expand...
That would account for at least a part of one component of the PF -- the radial shift observable near the edges of the frame. However, it doesn't explain the non-radial PF visible throughout the entire frame, nor how come it is much reduced by stopping down.

To my eye, it walks like axial CA and quacks like axial CA, so I think there's at least a good chance that it is axial CA.

Petteri
--



Portfolio: [ http://www.seittipaja.fi/index/ ]
Pontification: [ http://www.seittipaja.fi/ ]
 
alonewolf85,

I really doubt of this news. I do not believe Sony engineers cannot find CA/PF during design stage. It is so easy to find!!

If they can fix it, they will fix it before releasing them to the market. So I think there is no way for them to fix.

And currently there is another thread in STF mentioning no fix for 828 from Sony Japan.

Andy
 
who knows, maybe its the angle of the light,maybe its the lens,maybe its the coating on the lens,maybe its the sensor,maybe its the proccessor,maybe its just junk and sony should start from scratch and do it right
Petteri Sulonen said:
alonewolf85 said:
Petteri Sulonen said:
If it isn't lens-related, I'd be very interested to hear how come
stopping down the lens has a significant effect on it.
Click to expand...
when you stop down the lens you let less light in,there fore you do
not overload the sensor and it gives less purple
Click to expand...
Sorry, that doesn't wash. In order to get the same exposure, you
need to get the same amount of light to the sensor: if you stop
down, that means you need to leave the shutter open longer. The
sensor doesn't care whether the light comes in all at once or over
a longer time.

Petteri
--



Portfolio: [ http://www.seittipaja.fi/index/ ]
Pontification: [ http://www.seittipaja.fi/ ]
Click to expand...
 
I wonder ....

if this was the reason Sony appeared so guarded about their pre-production units. I recall that Phil had not published any pictures taken by the camera upon Sony's insistance. There were several other accounts about Sony not allowing people to "take home" pictures they shot with pre-production F828 units that they displayed at trade shows.

Do you have a source for this Carl-Zeiss's reply?

nunatak
the born 2 design
design guy
 
Assuming it is an algorithm thing, then wouldn't that be able to be addressed by changing the algorithm in the firmware?

Marc
andyyau said:
alonewolf85,

I really doubt of this news. I do not believe Sony engineers cannot
find CA/PF during design stage. It is so easy to find!!

If they can fix it, they will fix it before releasing them to the
market. So I think there is no way for them to fix.

And currently there is another thread in STF mentioning no fix for
828 from Sony Japan.

Andy
Click to expand...
 
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