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walts.photo
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Re: Star Eater Algorithm and getting in contact with Sony


Thrice,

The difference becomes even more apparent when you compare histograms in Rawdigger. The 3.2 second exposures show a bi-modal distribution in all four channels, one grouping being darker and the other, smaller grouping consisting of these "hot pixels". It's easiest to see these using a logarithmic Y-axis scale since the hot pixels are few in number compared with the background.

The distribution changes at 4.0 second exposures. All the "hot pixels" are truncated. eg: ISO 6400 and ISO100 comparison with no LENR, no DRO, dark room, lens cap on:

https://adobe.ly/2sc41qZ





My conditions: A7Rii, latest firmware (4.0), LENR on/off, DRO on/off, iso 100/6400, compressed raw vs uncompressed raw, 3.2 sec vs 4 sec exposures at f/4, 35mm (16-35 4), lens cap on in dark room.




Jun 11, 2017 at 11:23 AM
walts.photo
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Re: Star Eater Algorithm and getting in contact with Sony


Thrice,

The difference becomes even more apparent when you compare histograms in Rawdigger. The 3.2 second exposures show a bi-modal distribution in all four channels, one grouping being darker and the other, smaller grouping consisting of these "hot pixels".

The distribution changes at 4.0 second exposures. All the "hot pixels" are truncated. eg: ISO 6400 and ISO100 comparison:

https://adobe.ly/2sc41qZ

It's easiest to see these using a logarithmic Y-axis scale.



My conditions: A7Rii, latest firmware (4.0), LENR on/off, DRO on/off, iso 100/6400, compressed raw vs uncompressed raw, 3.2 sec vs 4 sec exposures at f/4, 35mm (16-35 4), lens cap on in dark room.




Jun 11, 2017 at 11:15 AM
walts.photo
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Re: Star Eater Algorithm and getting in contact with Sony


Thrice,

The difference becomes even more apparent when you compare histograms in Rawdigger. The 3.2 second exposures show a bi-modal distribution in all four channels, one grouping being darker and the other, smaller grouping consisting of these "hot pixels".

The distribution changes at 4.0 second exposures. All the "hot pixels" are truncated. eg:

https://adobe.ly/2sc41qZ

It's easiest to see these using a logarithmic Y-axis scale.



My conditions: A7Rii, latest firmware (4.0), LENR on/off, DRO on/off, iso 100/6400, compressed raw vs uncompressed raw, 3.2 sec vs 4 sec exposures at f/4, 35mm (16-35 4), lens cap on in dark room.




Jun 11, 2017 at 11:14 AM
walts.photo
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Upload & Sell: Off
Re: Star Eater Algorithm and getting in contact with Sony


Thrice,

The difference becomes even more apparent when you compare histograms in Rawdigger. The 3.2 second exposures show a bi-modal distribution in all four channels, one grouping being darker and the other, smaller grouping consisting of these "hot pixels".

The distribution changes at 4.0 second exposures. All the "hot pixels" are truncated.

It's easiest to see these using a logarithmic Y-axis scale.



My conditions: A7Rii, latest firmware (4.0), LENR on/off, DRO on/off, iso 100/6400, compressed raw vs uncompressed raw, 3.2 sec vs 4 sec exposures at f/4, 35mm (16-35 4), lens cap on in dark room.




Jun 09, 2017 at 10:05 AM





  Previous versions of walts.photo's message #14067982 « Star Eater Algorithm and getting in contact with Sony »