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Archive 2017 · Star Eater Algorithm and getting in contact with Sony

thrice
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p.9 #1 · p.9 #1 · Star Eater Algorithm and getting in contact with Sony

I just did a re-test after fully initialising the camera.

I still have star eater issues at 4.0s+

Spoke to a friend at Sony, he doesn't think this FW was meant to be star eater fix.

Jun 08, 2017 at 06:34 PM

MJKoski
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p.9 #2 · p.9 #2 · Star Eater Algorithm and getting in contact with Sony

Oh yes, it would be seriously dumb to leave such setting without a switch to enable/disable it. Forcing it / leaving it out totally is not the way you handle such features with multi-$$$$ camera body.

Jun 09, 2017 at 02:35 AM

thrice
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p.9 #3 · p.9 #3 · Star Eater Algorithm and getting in contact with Sony

My lenscap-on tests with rawdigger show LENR on/off as having no effect and the details being smeared over 3.2s regardless...

Edited on Jun 09, 2017 at 02:59 AM · View previous versions

Jun 09, 2017 at 02:40 AM

MJKoski
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p.9 #4 · p.9 #4 · Star Eater Algorithm and getting in contact with Sony

Adobe did their own filtering? Did you check with Capture One? Free for Sony.

Jun 09, 2017 at 02:53 AM

thrice
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p.9 #5 · p.9 #5 · Star Eater Algorithm and getting in contact with Sony

MJKoski wrote:
Adobe did their own filtering? Did you check with Capture One? Free for Sony.

Hi, I just checked with Rawdigger and I'm seeing filtering at 4.0s.

Jun 09, 2017 at 02:57 AM

thrice
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p.9 #6 · p.9 #6 · Star Eater Algorithm and getting in contact with Sony

Here's another re-test at same aperture (in case that had any effect).

It's perhaps not as bad as it was, but some funky business is definitely still going on.

Jun 09, 2017 at 03:33 AM

aikaarska
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p.9 #7 · p.9 #7 · Star Eater Algorithm and getting in contact with Sony

Uups. That sounds (and looks) a bit weird...

Jun 09, 2017 at 07:45 AM

walts.photo
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p.9 #8 · p.9 #8 · 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, firmware 4.0:

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.

Edited on Jun 11, 2017 at 11:24 AM · View previous versions

Jun 09, 2017 at 10:05 AM

Fred Miranda
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p.9 #9 · p.9 #9 · Star Eater Algorithm and getting in contact with Sony

So, did the firmware upgrade (fw 4.0) fixed the Star Eater issue for the A7RII or not?

Jun 09, 2017 at 05:27 PM

ThanhHa
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p.9 #10 · p.9 #10 · Star Eater Algorithm and getting in contact with Sony

Someone please post a real-world test.

Jun 09, 2017 at 06:23 PM

navmannz
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p.9 #11 · p.9 #11 · Star Eater Algorithm and getting in contact with Sony

Fred Miranda wrote:
So, did the firmware upgrade (fw 4.0) fixed the Star Eater issue for the A7RII or not?
Seems like they have modified rather than removed the filtering, with some improvement, but still some modification so not 'raw' raw. It's not ideal weather or moon phase here, so having to be patient.
-John

Jun 09, 2017 at 08:03 PM

aikaarska
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p.9 #12 · p.9 #12 · Star Eater Algorithm and getting in contact with Sony

ThanhHa wrote:
Someone please post a real-world test.

Hi,

Here is my kind of "real world" test with A7RII (firmware v.4.00) - 3.2sec vs. 4sec

I think there is some improvement indeed, vs. v. 3.30.

https://www.dpreview.com/forums/post/59682602

Jun 10, 2017 at 01:45 PM

fred_76
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p.9 #13 · p.9 #13 · Star Eater Algorithm and getting in contact with Sony

Hi all!

A petition is now online against the Star Eater.

It has been proposed by myself and reviewed by Laurent Laveder, Thierry Legault, Ian Norman, Damian Peach, Aaron D. Priest and Babak Takeshi.

We invite you to sign it :
http://www.change.org/p/sony-remove-the-star-eater-on-sony-a7s-r-mk-i-ii-and-a9-cameras

Clear sky

Fred

Jul 29, 2017 at 02:02 AM

navmannz
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p.9 #14 · p.9 #14 · Star Eater Algorithm and getting in contact with Sony

fred_76 wrote:
Hi all!

A petition is now online against the Star Eater.

It has been proposed by myself and reviewed by Laurent Laveder, Thierry Legault, Ian Norman, Damian Peach, Aaron D. Priest and Babak Takeshi.

We invite you to sign it :
http://www.change.org/p/sony-remove-the-star-eater-on-sony-a7s-r-mk-i-ii-and-a9-cameras

Clear sky

Fred

Well done Fred!

-John

Jul 30, 2017 at 12:06 AM

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