Sony 6300 and Meike 6.5mm f/2.0

[rusta...@gmail.com]

Please tell me why such a strange nadir?

[rusta...@gmail.com]

четверг, 3 марта 2022 г. в 11:39:53 UTC+5, rusta...@gmail.com:

[PTGui Support]

Hi,

The images don't seem to overlap enough, the nadir simply is not covered
by any of your images.

One thing to check is the Crop tab though: is the cropping circle set
large enough, so the entire image is used?

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

On 03/03/2022 07:39, rusta...@gmail.com wrote:
> Please tell me why such a strange nadir?
>

> --
> You received this message because you are subscribed to the Google
> Groups "PTGui Support" group.
> To unsubscribe from this group and stop receiving emails from it, send
> an email to ptgui+un...@googlegroups.com
> <mailto:ptgui+un...@googlegroups.com>.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/ptgui/9648cadb-8bed-4e55-970e-f5a4b78dd0bbn%40googlegroups.com
> <https://groups.google.com/d/msgid/ptgui/9648cadb-8bed-4e55-970e-f5a4b78dd0bbn%40googlegroups.com?utm_medium=email&utm_source=footer>.

[PTGui Support]

I checked the images you sent me. It's a single row of 4 fisheye images,
with the camera tilted up by about 8 degrees. This is good, it ensures
that you have coverage in the zenith. But the nadir is not covered by
your images entirely, this is why you see a hole there. It's not the
problem, you would only see your tripod there if the nadir were included
in your images.

If you need full coverage in the nadir, you need to take one additional
image with the camera pointed down. This is usually taken handheld. The
camera will not be exactly in the same no-parallax point. You would use
Viewpoint Correction (this requires the Pro version) to adjust for this.

It's explained in the Video Tutorials, part 7:
https://ptgui.com/videotutorials.html

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

[John Houghton]

One explanation for the odd shaped nadir hole could be that the images were not shot at yaw angles of exactly 0, 90, 180, 270 degrees - e.g. maybe roughly guessed manual settings.  If you can provide a copy of the saved project file, it should be possible to identify the cause.

John

[rusta...@gmail.com]

Hello!
Probably I didn't express myself correctly.
I know that I will always have a hole in the nadir)
I'm talking about something else
on all cameras and lenses that I shot and stitched.
nikon, canon, fuji
but never once have I seen an irregularly shaped nadir. it's not a square. he randomly pulls one corner.

nikon example, good square nikon d7100 and sigma 8mm

четверг, 3 марта 2022 г. в 13:49:45 UTC+5, John Houghton:

[rusta...@gmail.com]

Hi
The problem is not that there is a hole there.
And the fact that the nadir is not a square.
and I can't figure out the perfect setup and make a template.
It always has one elongated corner.
That's why I sent you the source of the photo

четверг, 3 марта 2022 г. в 13:44:05 UTC+5, PTGui Support:

[PTGui Support]

To me it looks like the panohead was not levelled. The nadir hole will
be larger in one direction, and shorter in the opposite direction.

Other than this it's not a big deal, levelling is not necessary for
perfect stitching.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

> --
> You received this message because you are subscribed to the Google
> Groups "PTGui Support" group.
> To unsubscribe from this group and stop receiving emails from it, send
> an email to ptgui+un...@googlegroups.com
> <mailto:ptgui+un...@googlegroups.com>.
> To view this discussion on the web visit

> https://groups.google.com/d/msgid/ptgui/f53fd322-bcd6-46f9-be87-948a002e9c13n%40googlegroups.com
> <https://groups.google.com/d/msgid/ptgui/f53fd322-bcd6-46f9-be87-948a002e9c13n%40googlegroups.com?utm_medium=email&utm_source=footer>.