Can you please show a screenshot of both the rendered image and of the pano editor window with ayers and coor anchors visible?

hermer-blr wrote:

Here are some screenshots and the upper left part of the panorama showing a dramatic example of the problem.

Thanks for your help

Hi!

Try this:

deactivate "optimize by layers"
set the reference anchor to a sky-area
use only "exposure" with the anchors.

best, Klaus

Hi
If your test isn't successfullym try once again whithout any reference images/anchor points.
I try out and test the new 3.0 for color correction and found, that without ref/anchor, the results are the best in blending.
Even when overlapping zones are handmade and irregular like in your case.
Have you try to correct the vignetting before stitching with APG? It looks like there is a lot of this.

Last edited by lumelix (2012-09-26 21:54:05)

If it's the blending/color correction itself, Kolor says this is a priority for V3.1.
But what you think about vignetting. You only have one row and the dark zones are
always between the images. Until now, APG did not correct vignetting.

Btw. For tests, render at 50% or smaller. Faster and you see if it's ok or not.

Last edited by lumelix (2012-09-26 21:55:06)

for automatic vignetting correction...if your lens and nikon are supported (if profiles exist), I would suggest:
http://epaperpress.com/ptlens/

Georg

Thank you, Lumelix.

I will give a try to your different suggestions. However, I suspect that vignetting is not the cause of the problem. Would APG not correct the vignetting, not a single panorama would be acceptable.

The software has for long had an issue with the sky; I thought that it had been resolved, but it seems not...

The question is now are there suggestions that would help in a not to painful manner to stitch the panoramas without these grey areas in the sky...

The reason why I think about vignetting is because I never have such an issue with a single row pano.
And I found that the color correction since APG V3 A2 is really improved.
But as Klaus wrote, the color correction in APG have still some issues. I found a lot of errors when using gamma
and exposure correction together or with color correction in giga panos with more than one row.
You have to note that APG don't correct the vignetting until now. It does a little optimization while blending,
so vignetting is less visible, but this can not replace a real vignetting tool.
I found in giga panos, it's really necessary to correct vignetting first, even with the 600mm combo.
Otherwise, vignetting is always visible as darker bands between the images, most in the sky.

Try Klaus's suggestion and use once only exposure correction with no or only one "reference image".
You can also completely deactivate the color correction to see what happens. If you have still these grey areas,
it has nothing to do with the color correction.
Try also different multiband levels form -3 to 0 and try other than multiband (nothing or linear) to see what happens.
For tests you can render the pano really small, 20% or 50% or so. Then you have the result faster.

I just see that you have dehazed the images. And when I'm looking to the clouds, it looks something like tonemapped ?

Last edited by lumelix (2012-09-27 16:40:52)

Oh, I have overlook this in the first post. Have you done bracketing by exposure time? Certainly!
I'm not shure but with braketing you should better use the HDR option in color correction.
http://www.autopano.net/wiki-en/action/ … w_it_works
Workflow case E. Did you so?
What is if you take only one of the exposures, eg. the one where the sky is well exposed?

Hello,

It looks like a vignetting issue. For more details on that, you can give a look at http://www.kolor.com/forum/viewtopic.ph … 308#p90308.

It is for us a very important issue, and therefore, we plan to work on color correction in Autopano 3.1.

Regards,
Thomas

I just downloaded DXO optics pro and used it to process my raw files, including vignetting processing.

The APG result is now perfect, even in the Gamma correction mode.

I must admit that I could not believe that APG was not able to perfectly correct vignetting : it should be part of its basic features.

As I understand it, DXO optics pro has a database of cameras and lenses. It sure helps.

Thank to all for your help and suggestions

Thanks for this advice, Leifs

In my own case (Nikon camera and Lens), DOP had the right information in its database.

But  I have not disabled lens distortion correction...

The panorama looks however perfect... at first glance. However, when I darken the sky (e.g. with a progressive filter in Nikon Capture NX2), some greyish areas tend to reappear. So, there is still an issue that lens distortion correction disabling might have permitted to avoid...