Banding

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RonJohn
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Joined: 13.08.2011 19:38

Banding

Unread postby RonJohn » 13.08.2011 19:44

After running and saving I noticed banding in the final image; everything else was excellent. I was using images processed in DXO and Lightroom (PC; Windows 7) from images created in a Canon 5dMkII. Any thoughts?

Thanks,
RonJohn

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Stas Yatsenko
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Re: Banding

Unread postby Stas Yatsenko » 14.08.2011 18:15

We need to test your files in our environment. Can you please upload them to our ftp server as described at http://www.heliconsoft.com/ftp.html

RonJohn
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Joined: 13.08.2011 19:38

Re: Banding

Unread postby RonJohn » 14.08.2011 20:08

I'd love to but it won't accept my PW. I then changed my PW, but it still won't let me in. Help.
RonJohn

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Stas Yatsenko
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Re: Banding

Unread postby Stas Yatsenko » 15.08.2011 09:19

Are you sure that you dropped files to Windows Explorer (File Explorer), not the Internet Explorer?
If not, you will need to use some FTP client (Total Commander or a free one).

RonJohn
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Joined: 13.08.2011 19:38

Re: Banding

Unread postby RonJohn » 15.08.2011 17:54

Sorry to be a pain, but it tells me that "This fttp cannot be read in Windows Explorer." It doesn't work at all in Windows Explorer. If I use the internet explorer I put the address in, see a list of files(?) and am told to click "Page" then view FTP in Windows Exporer and I get the same result: First a this is only a read-only document, then that it cannot be read.

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Stas Yatsenko
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Re: Banding

Unread postby Stas Yatsenko » 16.08.2011 15:28

Sorry, please use free FTP client like FileZilla:
http://filezilla-project.org/

RonJohn
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Joined: 13.08.2011 19:38

Re: Banding

Unread postby RonJohn » 16.08.2011 17:10

That worked--thanks!

Its a photo of a shell composed from four photos. I have the original color composite, but it is twice as big so I sent the B&W version; both show the banding.

RonJohn

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Stas Yatsenko
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Re: Banding

Unread postby Stas Yatsenko » 17.08.2011 13:24

It looks like the brightness of the source images was very different and the program was not able to compensate this completely. We can tell you more if you upload source images.

RonJohn
Posts: 5
Joined: 13.08.2011 19:38

Re: Banding

Unread postby RonJohn » 18.08.2011 16:33

I don't think that's it, but I just uploaded the four originals. They are all over-exposed by two stops to maximize the available data for processing. I recall that the light was fairly steady, but I have been wrong before and could be again.

Thank you for your help. Excellent product support is rare and I very much appreciate it.

Ron

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Stas Yatsenko
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Re: Banding

Unread postby Stas Yatsenko » 22.08.2011 15:36

Yes, we can see the banding. This is effect appears when big parts of the object contain low level of details. We will try to update our algorithms to better deal with such cases. We will use your samples for tests.


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