Originally posted by Laurentiu Cristofor Check pcarfan's answer to this
thread - it's right on the first page.
Also, have a look at the samples of banding posted by others in immdiate proximity to his post. I can clearly see banding in several shots, the K20D dpreview ones being some of the most obvious. But it seems to me there's a world of difference between those K20D shots from dpreview and pcarfan's shots.
Let me know what you think.
Okay thanks for that.
I've looked them over and it's all good(no glasses needed
)
I've found banding in all three full res shots as well.
I agree on the banding being affected in resize as well.
However, I'm not at all convinced were looking at image distortion(not so fancy).
Given that the patterns are consistent(with whats in the scene), I'd say were most likely looking at the equivalent of stepping back and getting a better picture. Having said that... the banding is well and accounted for in all three images at 100% as well as the resized ones. However, it is rather muted in the ISO1600 shot and since it's a widespread pattern, it makes it harder to identify at 100%. However, we rarely(if ever) view images at 1:1 so... I'm not sure how helpful it is to assess banding at this level tbh.
And I won't argue on the banding phenomenon in other models too ie.K20(and not just Pentax), though it certainly does seem to creep in earlier on the K7 models than that of the K20's. Especially when working with shadow recovery etc.
Another interesting phenomenon in the samples you linked here, is that I'm seeing rather strong wavelet(NR) patterns at 100% in both the ISO3200 and 6400 images.
Which might be a sign that conditions could improve if these were shot in the RAW.
For me(can't speak for others), banding is the worst high ISO bi-product there is due to the difficulties it poses in removing it(see all channels).
Originally posted by Igilligan I would flaunt it! That is a beautiful shot at ISO 4000! I respect how well you fought this one! It was worth whatever tweeking you did.
I would love to sit next to you as you work your magic cleaning up an image like this. I am one of those guys who learn better by watchin' than readin'
I would be more than happy to share this information with you and anyone else who would cares within the community.