durandal2 wrote:
yes but you can get higher resolution pic you can denoise and then resize to get a sharper and noiseless picture compared to a mraw one.
+10
NR can be done more effectively in raw before resizing, than in sRaw.
Noise reduction in my tests have been done before resizing. The results of my tests are clear and conclusive. mRAW and sRAW reduces noise better without having to do anything special in post. Many individuals have made claims similar to yours Brainiac but I have yet to see clear examples.
I think it is also worth mentioning that you can always apply Noise Ninja or other noise reduction techniques on sRAW.
OO7MIKE wrote:
Noise reduction in my tests have been done before resizing. The results of my tests are clear and conclusive. mRAW and sRAW reduces noise better without having to do anything special in post. Many individuals have made claims similar to yours Brainiac but I have yet to see clear examples.
I think it is also worth mentioning that you can always apply Noise Ninja or other noise reduction techniques on sRAW.
Of course you can, but there will be a slight advantage at the full resolution since it will be easier for the algorithm, whatever it is, to distinguish between noise and detail at native resolution than at a lesser. Applying NR at full rez should offer either a slight benefit in preservation of detail or a slight benefit in quality of NR, or both. Of course the difference will be small. The 'advantage' of sRaw and mRaw is achieved as well, if not better, by downsizing raw than by in-camera 'pixel-binning' (averaging).
One thing to be aware of when considering why differences may appear in RAW and sRAW/mRAW files using different RAW processors is that sRAW/mRAW files have already been demosaiiced (in the camera) and encoded as high bit-depth linear RGB data. While this preserves most of the flexibiltiy of RAW file editing (essentially this is the internal format used by ACR's editing tools) you do loose any opportunity to improve things in the deBayer step. Canon's decoding seems to do a pretty good job, but whatever maze or other artifacting was there in the original algorithm when the Digic processor was burned is pretty much going to be there always.
I just gave Lightroom 3 beta a try and I have to say that the new noise algorithm is far superior to ACR 5.6 with any number of additional noise reducing techniques in post. Using the default setting of 25 it suppresses almost all of the color noise. Only thing that is left are a few color blotches here and there and a lot of fine grain. I do like the look and feel of the grain. Sharpness and none noise colors are retained.
After resizing an ISO 12800 shot it appears much sharper than what sRAW can generate. Still if you run an sRAW shot through Light Room 3 beta there is hardly any color noise left at all. (other than grain) I am very impressed with LR 3 beta's noise reduction. I cant wait until the technology trickles down to ACR so I can be more productive. In the mean time, its worth the extra effort!
I just updated my previous test to reflect these findings.
how do i lockup the mirror for multiple shots on the 7D ? i saw this feature mentioned in the announcements but i can't find any mention in the manual.
i want to use mirror lockup with AEB and multishot.
Holy crap Lightroom 3 does a much better job. The grain is definitely nicer and I actually see slightly less banding and the chroma noise is almost completely gone.
Can you force the 7D to not taker a shot in AI servo if it doesnt have focus? I know theres priority stuff but nothing seemed like it would do the job.
Too bad 7D highlight recovery and color profiles are still not fixed and poor in LR3.
Some people have commented on the graying out of the luminescence noise reduction tab. I believe it's Adobe's goal to DO AWAY with that altogether in the final release.
thw2 wrote:
Too bad 7D highlight recovery and color profiles are still not fixed and poor in LR3.
Results look pretty good to me...
Some people have commented on the graying out of the luminescence noise reduction tab. I believe it's Adobe's goal to DO AWAY with that altogether in the final release.
Adobe themselves say otherwise. They're very pleased with Lr3's chroma NR so want people to concentrate on that for now, in the hope that - down the line - their new luma NR will impress just as much...
It would be impossible, I'd say, to create NR so intelligent that no human intervention was required...
keithreeder wrote:
It does, Durandal2, but Adobe has completely redeveloped the version in Lr3 and it's much better than previous incarnations.
It's reasonable to assume that ACR will end up with the same improved IQ.
I hope it does the new version is better than the beta but it is till got some problems with noise and artifacts compared to DPP. However ACR's micro-contrast and sharpness during raw conversion is better than DPP. It appears DPP is applying NR even with it turned off in-camera and in DPP.
