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OK, but unless we can manage to get this issue again where we do have a RAW file, I would not worry too much. At least I have not seen it.
Yes, it wasn't a good poster but more importantly it was behind a glass window/door, but as I had both cameras I just wanted to show that there is no artifacts with quattro. I mean Merrill shows the same.
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Raist3d
Guest
Particularly given I am capable of fully admitting I am wrong. What I am saying its pretty basic oven the chroma loss of the sensor- lets chek with more shots. Nothing more.
On the other hand you do seem to have trouble admitting hen you are flat out wrong with no second handed passive aggressive commentary. I'll leave up to the intelligent reader to decide.
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Raist3d/Ricardo (Photographer, software dev.)- I photograph black cats in coal mines at night...
“The further a society drifts from truth the more it will hate those who speak it.” - George Orwell
On the other hand you do seem to have trouble admitting hen you are flat out wrong with no second handed passive aggressive commentary. I'll leave up to the intelligent reader to decide.
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Raist3d/Ricardo (Photographer, software dev.)- I photograph black cats in coal mines at night...
“The further a society drifts from truth the more it will hate those who speak it.” - George Orwell
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Raist3d
Guest
I think we need to see a plurality of shots but the other link sure shows the color resolution loss (the wheels).
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Raist3d
Guest
One thing about the shots prevent because te first shot seemed a bit that way to me - if the shots are shot I. Coo too a were they will e a bit fuzzy that will potentially look the Quattro closer to Merrill in a detail sharp comparison with the colors.
I I am sure you can see this but just a note. Thanks.
Yes, but if one cannot reproduce the problem...
Sorry I didn't understand what you said above, could you repeat the question?
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Raist3d
Guest
except that it has been reproduced by more than one person. I don't know if you have the clor wheel Raws a along maybe I missed that. In the ideal world I would love if you could check the raw file of the "bee garden" or also simply see or myself.
As another example- the last landscapes shots as of two days ago in your flicker show more detail in the far for the Merrill not the Quattro.
I just think hunk we need to see more data and also I will agree with waiting perhaps for the SPP in six months from now.
webrunner5
Senior Member
To the OP. You could be slightly right. No Sigma camera yet has ever been spot on on colors. But I will be willing to let them sort out the software, or Adobe to do it before I get my knickers in a knot like the English say. WAY to early to say things one way or another. But you know and I know it will be weird one way or another or it would not be a Sigma camera. But I know it will be a special camera just like all of them in the past have been.
Anybody can have a normal camera or a normal car, you have to take risks on limited stuff to have a smile on your face at the end of the day. I am not much into boring stuff, cars, cameras, women, etc., never have been. :-D
Anybody can have a normal camera or a normal car, you have to take risks on limited stuff to have a smile on your face at the end of the day. I am not much into boring stuff, cars, cameras, women, etc., never have been. :-D
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Raist3d
Guest
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Raist3d
Guest
My apologies. It's what happens when typing on a phone in a hurry
What I meant is- to properly compare Quattro & Merril, it's best to have no other variables in like what you mention shooting through glass, because if it makes the Merrill lose some accuity/detail because of it, the Quattro (going by what we have been talking about), would look closer to the Merrill then.
It wasn't a question as much as a note, but I think this probably has crossed your mind also.
Do you mean the image resource images?
Actually it doesn't. Don't confuse contrast with detail. If you look at house roofs f.ex the Merrill shows it like a multicoloured pattern. But it isn't there. The houses have the same tiles throughout the roof.
But when I point this out again and again, people ignores it because it doesn't fit their opinions
Look at the contrast examples. The grass in the Merrill shots don't look like this.
Well have you any idea how had it is to find something yellow on blue or red on blue to take photo of? It is not good colour combinations to start with. Camera or not. So it is not a likely problem.
I'm working on it.
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Raist3d
Guest
I mean several shots. There's links to the red on black, other yellows and the imaging resource images (I think) with the color wheels.
I am not.
Again, I am not. I am looking at the distance and how distinct the grass looks. I can try a few settings and verify.
Well, it would be a problem for some fashion shooting me thinks. Clothe and fabric can bring issues like these. But the point is, it's there and it's less resolution. Whether overall perceived is still acceptable on Quattro that's another thing.
Keep in mind I am not in the camp of "Quattro is bad because of the inherent chroma resolution loss"- I am just exploring the tradeoff. Personally, the color overall looks to me better than Merrill and if I want color accuracy I would just shoot at 4.9MP. I don't have problem with that for color.
The problem though is that you would get this effect at the border only. If it is purly chroma and not some processing issue. Then you are talking about 2 pixels. So for this to happen in the banners (both of them show this), then in my mind it is down to processing.
But do you then say that any 20Mp Bayer camera is in effect a 5Mp camera? As it doesn't have more blue or red photosites?
Bayer 2x2: RG,GB you get 1 measurement per photosite = 4 measurements for defined frequency
Quattro 2x2: T1T2,T3T4, M1,M2,M3,M4, B1,B2,B3,B4 or T1T2,T3,T4, M, B = 6 measurements of a frequency specter where possibly 2 of them comes from 8 binned sites. I don't know the implementation of the sensor. I mean is it binned photosites or one big photosite. Let's assume one big for argument.
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Raist3d
Guest
I tried a few things but effectively yes, the issue does show up. This is SPP 6.0.3. This is the current version of Sigma SPP available at the Sigma website for download (at least from USA links), as of July 24, 2014.
Here is a screen grab. Notice I put the noise reduction all the way down. If there is a setting I am missing please point it out. Thanks!
PrebenR- I think something interesting to noice- notice the kind of blue that is against the yellow. Seems like a cyan blue, closer to the top layer response than the blue you had. Maybe that's what makes it more problematic.
NOTE: Because this was screen-grabbed from a retina display the grab will look as if it was zoomed by 2X. I did not resize it down because I wanted to show what I saw pixel by pixel unadultered. If you are not on a retina display just scale it down or "to fit" anyway will show the issue.
No noise reduction, no "Alpha SPP" version - this is 6.0.3.
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Raist3d/Ricardo (Photographer, software dev.)- I photograph black cats in coal mines at night...
“The further a society drifts from truth the more it will hate those who speak it.” - George Orwell
Here is a screen grab. Notice I put the noise reduction all the way down. If there is a setting I am missing please point it out. Thanks!
PrebenR- I think something interesting to noice- notice the kind of blue that is against the yellow. Seems like a cyan blue, closer to the top layer response than the blue you had. Maybe that's what makes it more problematic.
NOTE: Because this was screen-grabbed from a retina display the grab will look as if it was zoomed by 2X. I did not resize it down because I wanted to show what I saw pixel by pixel unadultered. If you are not on a retina display just scale it down or "to fit" anyway will show the issue.
No noise reduction, no "Alpha SPP" version - this is 6.0.3.
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Raist3d/Ricardo (Photographer, software dev.)- I photograph black cats in coal mines at night...
“The further a society drifts from truth the more it will hate those who speak it.” - George Orwell
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Raist3d
Guest
Not necessarily- you can get this at any point of color transitions that are abrupt within for example cloth threads. Other tones can be faked/interpolated and they would look close but not like an X3 capture.
Not sure if you are talking about now of your shot or the "beer garden" shot.
No. That's not what I said. What I said is if I want a true X3 capture with full color acuity on the Quattro, I would just shoot at 4.9MP.
According to the docs it's one big. Keep in mind, I am not talking about Bayer, I am talking about Quattro vs previous Foveon. Basically if one unique characteristic of Foveon is not quite there and it looks more towards an AAless Bayer in some ways, some uniqueness of it is lost.
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Raist3d
Guest
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