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Cross Hatching on my BMPCC

https://forum.blackmagicdesign.com/viewtopic.php?f=2&t=14188

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Cross Hatching on my BMPCC

PostPosted: Mon Oct 21, 2013 3:50 pm
by markb
Hi there seems to be cross hatching on a flare from one of my shots during sunset yesterday.
Maybe someone here could explain this, thanks

With regard to settings, it was
800asa or maybe 1600.
180 angle
and 7500K

No post processing

Not sure what the F stop was. I was using my adapted 28mm Canon FD so It was pretty closed maybe 2.8 or a bit more open.

I have attached the screen grab. Please note it looks much worse on the ProRes video

Re: Cross Hatching on my BMPCC

PostPosted: Mon Oct 21, 2013 5:25 pm
by raadgie
Check this:

viewtopic.php?f=2&t=14045

viewtopic.php?f=2&t=12961

Re: Cross Hatching on my BMPCC

PostPosted: Mon Oct 21, 2013 5:39 pm
by m.snell-callanen
I had a similar thing happen once with my BMC. Had a flare and that strange texture appeared in it.

Haven't heard an explanation for it yet though.

Re: Cross Hatching on my BMPCC

PostPosted: Mon Oct 21, 2013 7:20 pm
by Rob Ford
m.snell-callanen wrote:I had a similar thing happen once with my BMC. Had a flare and that strange texture appeared in it.

Haven't heard an explanation for it yet though.



With regards to an explanation:

For the grid pattern, we have seen a few reports of this, and product management is currently investigating this. In the cases where this is occurring, we would like to gather a bit more information from you:j
1. Is this visible when the picture is 1:1 or 100% scaled in the preview window?
2. What are the ISO settings?
3. Can you send a sample image, like recorded footage not a screenshot? This can be sent via DropBox or WeTransfer link, etc.
4. What filters if any are you using?

Re: Cross Hatching on my BMPCC

PostPosted: Thu Oct 24, 2013 8:57 am
by markb
Hi Rob...who will I send the sample image to?
This forum will not let me add a link.

ISO was 1600
No filters, no post and its viewable on the image as it is.

Thanks

Re: Cross Hatching on my BMPCC

PostPosted: Thu Oct 24, 2013 9:24 am
by Chiaroscuro
See my solution here:

viewtopic.php?f=2&t=12961#p89842

Re: Cross Hatching on my BMPCC

PostPosted: Thu Oct 24, 2013 7:11 pm
by Rob Ford
markb wrote:Hi Rob...who will I send the sample image to?
This forum will not let me add a link.

ISO was 1600
No filters, no post and its viewable on the image as it is.

Thanks


Sorry i didn't explain further, this was from a BlackMagic Design customer service rep. So you should send that info to their customer service people.