blog.kasson.com
When you downsample a 102 MP or 41 MP image to less than 6 MP, I tend to suspect that the downsampling algorithm may be the most important contributor to the results, at least in terms of resolution, sharpness, acutance, chromatic aberrations, and noise. What are your thoughts on this?Studio Scene at 4:3 downsampled to 4K, Z8 and GFX 100
Developed in Lr with default settings except for WB.
Night and day? I think not. There are some differences.
Are there significant differences between downsampling settings and algorithms? What kind of downsampling has Jim used?When you downsample a 102 MP or 41 MP image to less than 6 MP, I tend to suspect that the downsampling algorithm may be the most important contributor to the results, at least in terms of resolution, sharpness, acutance, chromatic aberrations, and noise. What are your thoughts on this?Studio Scene at 4:3 downsampled to 4K, Z8 and GFX 100
Developed in Lr with default settings except for WB.
Night and day? I think not. There are some differences.
Nothing special. Just the Lightroom export algorithm. It is more sophisticated than the algorithms used in Lr and Ps for screen presentation.Are there significant differences between downsampling settings and algorithms? What kind of downsampling has Jim used?When you downsample a 102 MP or 41 MP image to less than 6 MP, I tend to suspect that the downsampling algorithm may be the most important contributor to the results, at least in terms of resolution, sharpness, acutance, chromatic aberrations, and noise. What are your thoughts on this?Studio Scene at 4:3 downsampled to 4K, Z8 and GFX 100
Developed in Lr with default settings except for WB.
Night and day? I think not. There are some differences.
blog.kasson.com
What's your point? Conclusion?
Developed in Lr with default settings except for WB.
Night and day? I think not. There are some differences.
There is someone saying that this comparison would result in dramatic differences. I disagreed. I’m now supplying some evidence.What's your point? Conclusion?
Developed in Lr with default settings except for WB.
Night and day? I think not. There are some differences.
blog.kasson.com
blog.kasson.com
There's an area of the image, where one should look first for a quick confirmation: bi-colored resolution circles, as this is where under-resolving Bayer pattern will hurt image the most.
Yes, there are significant differences among downsampling settings and algorithms, and the interaction of those with the properties of the source image and the degree of downsampling may well affect the qualities of the results.
Can you point me to tests/analysis of various downsampling algorithms used in current post-processors?
But a better algorithm than Lr and Ps use for screen resampling. See the nearest neighbor post in this thread.
Thanks!
Unfortunately, no, or at least, certainly not anything current. In the past I've experimented myself. Just from what I mostly use, DxO PhotoLab 7 Elite offers bicubic, bicubic sharper, and bilinear; Affinity Photo 2 offers bilinear, bicubic, Lanczos separable, and Lanczor non-separable; and Qimage offers a bunch of stuff, some of it maybe proprietary:
You seem to have missed the part about downsizing to 4K. This is a thread about differences after that downsampling.
As I said elsewhere, there are people who claim that there are great differences between a 100 MP MF sensor and a high-MP FF sensor when the images are shown in their entirety on a 4K screen.
Of course. But that's not what this thread is about.
