Graeme Nattress
RED Problem Solver
I give the 70% figure as an estimate, as there are so many variables that can effect this, from the nature of the image being shot, to the lens being used etc. etc.
REDCODE itself, doesn't really have any effect on resolution. What you may notice, under some conditions, if you look super carefully, with a strong levels manipulation is what looks like mild noise reduction. That's about it.
REDCODE is frame based, with no temporal dimension, so is not effected negatively by moving images.
Good Bayer CFA demosacing interpolation algorithms don't "improve" the resolution. They just make best use of the data at hand. It's as much an art as a science as there are various trade-offs you can make.
Sharpening the images is fine, if you don't mind how sharpening looks in general. It doesn't undo the effect of the AA filter, doesn't introduce jaggies or colour artifacts. However, if you're projecting 4k as 4k, you don't need as much sharpening as you may think you need as there is more than enough resolution there to sell the overall effect. I'm not personally that keen on traditional sharpening unless it's used ever-so-mildly so that you can hardly see it. One of the issues with traditonal HD video is that is really has such a low resolution, that it needs excessive sharpening, which leads to artifacts. That's why it's so hard to do makeup for HD - it's not it's resolution, but lack of it, and the need for sharpening (which makes faces horrible) that does it, IMHO.
Subjective - sure is. And it's aesthetic as well as engineering based choices. That's part of the fun of it though.
Graeme
REDCODE itself, doesn't really have any effect on resolution. What you may notice, under some conditions, if you look super carefully, with a strong levels manipulation is what looks like mild noise reduction. That's about it.
REDCODE is frame based, with no temporal dimension, so is not effected negatively by moving images.
Good Bayer CFA demosacing interpolation algorithms don't "improve" the resolution. They just make best use of the data at hand. It's as much an art as a science as there are various trade-offs you can make.
Sharpening the images is fine, if you don't mind how sharpening looks in general. It doesn't undo the effect of the AA filter, doesn't introduce jaggies or colour artifacts. However, if you're projecting 4k as 4k, you don't need as much sharpening as you may think you need as there is more than enough resolution there to sell the overall effect. I'm not personally that keen on traditional sharpening unless it's used ever-so-mildly so that you can hardly see it. One of the issues with traditonal HD video is that is really has such a low resolution, that it needs excessive sharpening, which leads to artifacts. That's why it's so hard to do makeup for HD - it's not it's resolution, but lack of it, and the need for sharpening (which makes faces horrible) that does it, IMHO.
Subjective - sure is. And it's aesthetic as well as engineering based choices. That's part of the fun of it though.
Graeme