now what??

jbr wrote:

Looks like stuck pixels to me.

Not to me, sorry Joe. See:

https://www.dpreview.com/forums/post/66905366

Look at that big circular black spot with the white ring round it about 9 px diameter. Definitely not a stuck pixel, IMO.

I'm hoping that Ole can take another shot with no lens and the dust-cover in the lens mount removed and post it as a PNG.

Have you looked at the raw data? Joe

How would he do that?

xpatUSA wrote:   ...

Can the SD9 take shots with both the dust-cover and the lens removed?

Yes, of course.

I am sooo curious what causes this effect!

wood_gnome wrote:

xpatUSA wrote: ...

Can the SD9 take shots with both the dust-cover and the lens removed?

Yes, of course.

Thanks, I couldn't remember.

Maybe Ole will try just to be completely sure that it's on the sensor ...

ole kekkonen wrote:

jbr wrote:

Looks like stuck pixels to me. Have you looked at the raw data? Joe

specific please?

Just thinking that to get to the bottom of this it would be useful to see what the sensor data looks like before processing into an image by SPP.  A program like DCRAW can extract the raw RGB info as created by the camera.  (I have used it on SD14 x3f files). X3ftools/Kapilinka should be able to do that too.  It may not be the answer but at least you would be able to eliminate the possibility that it is sensor related.  Stuck and dead pixels often occur in sensors and they are mapped out by software.  If they are not they can cause image artifacts especially bad in Bayer demosaicing process.  Not sure what they would look like in Foveon images but some of the spots in your image look suspect. And there appears to be sharpening halos around them. Another good reason to look at the raw data.  If you have a way to post the raw x3f file maybe that would help.  Joe

xpatUSA wrote:

jbr wrote:

Looks like stuck pixels to me.

Not to me, sorry Joe. See:

https://www.dpreview.com/forums/post/66905366

Look at that big circular black spot with the white ring round it about 9 px diameter. Definitely not a stuck pixel, IMO.

I'm hoping that Ole can take another shot with no lens and the dust-cover in the lens mount removed and post it as a PNG.

could be but some are a bit strange looking for dust

Have you looked at the raw data? Joe

How would he do that?

maybe DCraw, x3ftools, Kapilinka. I assume they can open SD9 raw files

jbr wrote:

xpatUSA wrote:

jbr wrote:

Looks like stuck pixels to me.

Not to me, sorry Joe. See:

https://www.dpreview.com/forums/post/66905366

Look at that big circular black spot with the white ring round it about 9 px diameter. Definitely not a stuck pixel, IMO.

I'm hoping that Ole can take another shot with no lens and the dust-cover in the lens mount removed and post it as a PNG.

could be but some are a bit strange looking for dust

Agreed. Some here are thinking that an optical effect is involved because of the circular nature of the items.

Have you looked at the raw data? Joe

How would he do that?

maybe DCraw, x3ftools, Kapilinka. I assume they can open SD9 raw files

A reasonable assumption.

jbr wrote:

ole kekkonen wrote:

jbr wrote:

Looks like stuck pixels to me. Have you looked at the raw data? Joe

specific please?

Just thinking that to get to the bottom of this it would be useful to see what the sensor data looks like before processing into an image by SPP. A program like DCRAW can extract the raw RGB info as created by the camera. (I have used it on SD14 x3f files). X3ftools/Kapilinka should be able to do that too. It may not be the answer but at least you would be able to eliminate the possibility that it is sensor related. Stuck and dead pixels often occur in sensors and they are mapped out by software. If they are not they can cause image artifacts especially bad in Bayer demosaicing process. Not sure what they would look like in Foveon images but some of the spots in your image look suspect. And there appears to be sharpening halos around them.

Agreed that permanently bad pixels can show up in DCraw and other raw converters but not in the proprietary converter. The X3F metadata has a bad pixels list for just that.

The Merrill top layer is particularly prone to bad (over-sensitive, not stuck) pixels that can make a dark sky look like starry night when viewing only that layer in RawDigger. I posted an example long ago here.

Another good reason to look at the raw data. If you have a way to post the raw x3f file maybe that would help. Joe

That would really help us, I reckon ...

xpatUSA wrote:

jbr wrote:

xpatUSA wrote:

jbr wrote:

Looks like stuck pixels to me.

Not to me, sorry Joe. See:

https://www.dpreview.com/forums/post/66905366

Look at that big circular black spot with the white ring round it about 9 px diameter. Definitely not a stuck pixel, IMO.

I'm hoping that Ole can take another shot with no lens and the dust-cover in the lens mount removed and post it as a PNG.

could be but some are a bit strange looking for dust

Agreed. Some here are thinking that an optical effect is involved because of the circular nature of the items.

Have you looked at the raw data? Joe

How would he do that?

maybe DCraw, x3ftools, [Kalpanika]. I assume they can open SD9 raw files.

Looks like Ole is otherwise occupied.

ole kekkonen wrote:

xpatUSA wrote:

xpatUSA wrote:

jbr wrote:

xpatUSA wrote:

jbr wrote:

Looks like stuck pixels to me.

Not to me, sorry Joe. See:

https://www.dpreview.com/forums/post/66905366

Look at that big circular black spot with the white ring round it about 9 px diameter. Definitely not a stuck pixel, IMO.

I'm hoping that Ole can take another shot with no lens and the dust-cover in the lens mount removed and post it as a PNG.

could be but some are a bit strange looking for dust

Agreed. Some here are thinking that an optical effect is involved because of the circular nature of the items.

Have you looked at the raw data? Joe

How would he do that?

maybe DCraw, x3ftools, [Kalpanika]. I assume they can open SD9 raw files.

Looks like Ole is otherwise occupied.

sorry I missed this but I dont think it will work on Macintosh

DCraw is available for Mac:

https://www.startpage.com/do/dsearch?query=dcraw+macintosh&cat=web&pl=ext-ff&language=english&extVersion=1.3.0

https://en.freedownloadmanager.org/Mac-OS/dcRAW-X.html

RawDigger is available but not free:

https://www.rawdigger.com/download