Ok so what am I looking at here.

[Simon Blackledge]

First still of 4k stuff on Red.com
Stills.. the MS of the plane..

Can I first say I just want to be clear what I'm seeing.. not bashing anything.. it's great.. just need to understand whats happening.

The grass.. the planes body.. basically at 100% it looks like a shot if I over do it in NeatImage or some noise reduction plugin. so is this

A, redcode compression
B, Jpeg compression
C, A+B = eek,,
D, Something Weta did.
E, something your working on.

Just an observation..

well done... ;)

si

[GlennChan]

Ok my question. :D

In the first jpeg (002318.jpg), what's the weird purple/green stuff on the edges of the plane with the sky, on the wires connecting the wings, on the text on the plane, etc. ?

[Simon Blackledge]

possibly CA ?
http://en.wikipedia.org/wiki/Chromatic_aberration



are current lenses good enough ? mtf etc? to keep up with 4k sensors?

[Floris Liesker]

It's very likely a noise reduction done in the Pablo grading.

See also http://www.reduser.net/forum/showthread.php?t=1944

[GlennChan]

The direction of the green/purple fringing doesn't look consistent with CA. i.e. there are circles (i.e. the crosshairs on the plane) and u-shaped areas in which the inside of that is all green/magenta.

[Jonathan Payne]

The magenta fringe on one side and green fringe on the other are indeed characteristics of Chromatic aberration. This is most likely what we're seeing in the image. That said, there is some degree of CA in all lenses and because of how film works it helps to hide CA while it becomes very noticeable in all digital sensors. The finest still cameras all show varying degrees of CA. No lenses can truly eliminate it 100% but their are several ways to combat it.

And this should not be viewed as problem with the camera. It's likely due to the lens and sensor combination. Not all combinations work together well.

[Mike Prevette]

TO explain that more it has to do with the wavelengths of light all focusing on a slightly different plane. Film corrects for this by making it's chromatic sensitivity in layers. Digital sensors all lie on the same plane hence more pronounced CA.

_mike

[Miguel "Macgregor" De Olaso]

First still of 4k stuff on Red.com
Stills.. the MS of the plane..

Can I first say I just want to be clear what I'm seeing.. not bashing anything.. it's great.. just need to understand whats happening.

The grass.. the planes body.. basically at 100% it looks like a shot if I over do it in NeatImage or some noise reduction plugin. so is this

A, redcode compression
B, Jpeg compression
C, A+B = eek,,
D, Something Weta did.
E, something your working on.

Just an observation..

well done... ;)

si

I am worried about this too. It is the same "problem" i see with Dalsa cameras. And that is the reason why i dont like Dalsa cameras.

Noise reduction? Demosaic? It does not look like jpeg compression.
It looks like the 1st Kodak digital photo cameras that claimed 5Mp having sensors of 3 or 4 Mp. They had a lower native resolution and filled the empty spaces.
However the Mysterium sensor should have more than enought pixels to play with it.
An answer is needed, but certainly i dont like it. DSLRs dont look like this. Film does not look like this.

[Clayton Harper]

Ok my question. :D

In the first jpeg (002318.jpg), what's the weird purple/green stuff on the edges of the plane with the sky, on the wires connecting the wings, on the text on the plane, etc. ?

It sort of looks like someone pulled a really bad key on a DSLR file. :bye2:

[Miltos Pilalitos]

I think you guys should really see how similar a 2K scanned film frame can look when you inspect it as much as you have.

Do you think the CA on the plane's edge with the sky and around the text is BAD? Wait until you see CA from panavision film cameras with anamorphic lenses or to be more fair from Arri 535 with Zeiss lenses.

99% of your audience will never notice this in such collosal resolutions!

The waterpaint effect could be a combination of things. Prototype camera, post processed footage, jpeg compression.

i think that you worry too much for nothing.