Prores444 isn't lossless.
I'm not sure what makes people think that it was in the first place.

On Fri, Mar 29, 2013 at 5:29 PM, Igor Majdandzic
<[email protected]> wrote:
> Do you know what caused them?
>
>
>
> --
>
> igor majdandzic
>
> compositor |
>
> [email protected]
>
> BadgerFX | www.badgerfx.com
>
>
>
> Von: [email protected]
> [mailto:[email protected]] Im Auftrag von Magno
> Borgo
> Gesendet: Freitag, 29. März 2013 14:06
> An: Nuke user discussion
> Betreff: Re: AW: [Nuke-users] Alexa Artifacts
>
>
>
> I've seen the exactly same artifacts when working on a film shot on Alexa.
> These are nasty specially when keying... same issue, shot directly in
> Proress 4444.
>
>
>
> Magno.
>
>
>
>
>
>
>
> We've been having some problems with noise on some footages from Alexa, but
> nothing remotely near to that.
>
>
>
> diogo
>
>
>
> On Wed, Mar 27, 2013 at 9:50 PM, Jonathan Egstad <[email protected]>
> wrote:
>
> No idea, but it looks an awful lot like filtering from a slight resize
> operation.
>
>
>
> -jonathan
>
>
> On Mar 27, 2013, at 5:29 PM, "Igor Majdandzic" <[email protected]>
> wrote:
>
> do you mean in camera? because that was from the original qt footage
>
>
>
> --
>
> igor majdandzic
>
> compositor |
>
> [email protected]
>
> BadgerFX | www.badgerfx.com
>
>
>
> Von: [email protected]
> [mailto:[email protected]] Im Auftrag von Jonathan
> Egstad
> Gesendet: Donnerstag, 28. März 2013 01:10
> An: Nuke user discussion
> Cc: Nuke user discussion
> Betreff: Re: [Nuke-users] Alexa Artifacts
>
>
>
> Looks like a very  slight resize was done.
>
> -jonathan
>
>
> On Mar 27, 2013, at 4:56 PM, "Igor Majdandzic" <[email protected]>
> wrote:
>
> Hey guys,
>
> we got footage from a shoot with Alexa being the camera. It was shot in
> ProRess 444. The problem is: The picture has some artifacts which confuse me
> the codec being 444. I attached some images which show some of the grain
> patterns. Is this normal?
>
>
>
> thx,
>
>                 Igor
>
>
>
>
>
>
>
> --
>
> igor majdandzic
>
> compositor |
>
> [email protected]
>
> BadgerFX | www.badgerfx.com
>
>
>
> Von: [email protected]
> [mailto:[email protected]] Im Auftrag von Deke
> Kincaid
> Gesendet: Mittwoch, 27. März 2013 23:47
> An: Nuke user discussion
> Betreff: Re: [Nuke-users] FusionI/O and Nuke
>
>
>
> Hi Michael
>
> I'm actually testing this right now as Fusionio just gave us a bunch of
> them.  Early tests reveal that with dpx it's awesome but with openexr zip
> compressed file it it is spending more time with compression, not sure if it
> is cpu bound or what(needs more study but its slower).  Openexr uncompressed
> files though are considerably superfast but of course the issue is that it
> is 18 meg a frame.  These are single layer rgba exr files.
>
>
> -----
> Deke Kincaid
> Creative Specialist
> The Foundry
> Mobile: (310) 883 4313
> Tel: (310) 399 4555 - Fax: (310) 450 4516
>
> The Foundry Visionmongers Ltd.
> Registered in England and Wales No: 4642027
>
>
>
> On Wed, Mar 27, 2013 at 3:26 PM, Michael Garrett <[email protected]>
> wrote:
>
> I'm evaluating one of these at the moment and am interested to know if
> others have got it working with Nuke nicely, meaning, have you been able to
> really utilise the insane bandwidth of this card to massively accelerate any
> part of your day to day compositing?
>
>
>
> So far, I've found it has no benefit when localising all Reads in a somewhat
> heavy comp, or even playing back a sequence of exr's or deep files, compared
> to localised sequences on a 10K Raptor drive also in my workstation -
> hopefully I'm missing something big though, this is day one after all.
>
>
>
> There may be real tangible benefits to putting the Nuke cache on it though -
> I'll see how it goes.
>
>
>
> I'm also guessing that as gpu processing becomes more prevalent in Nuke that
> we will see a real speed advantage handing data from a card like this
> straight to the gpu.
>
>
>
> Thanks,
>
> Michael
>
>
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>
>
> <crop-plate.jpg>
>
> <crop-plate_areas.jpg>
>
> <crop-plate_areas-edgeDetect.jpg>
>
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> _______________________________________________
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>
>
>
>
> --
>
> Magno Borgo
> www.boundaryvfx.com
> www.borgo.tv
> Brasil:Curitiba:GMT= -3
>
>
> _______________________________________________
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