blur

[Laurent]

Hi everyone,

I'm facing an issue I can't figure out. 

When merging some HDR panoramas (using 3 bracketed exposures), part of the final image ends up blurry — it looks like motion blur, even though I shot everything on a tripod. You can see it in the screenshot below.

When I dissociate the 3 exposures, that part of the image is perfectly sharp.

Could this be caused by something during the shooting process, or is it more likely a setting in PTGui?

Thanks in advance for any insights!

Laurent

[PTGui Support]

Hi Laurent,

Somehow your images are misaligned. This could be caused by the camera
shaking while the shutter closed. It can also happen if the camera has
an optical stabilizer; the sensor can slightly shift.

In your second screenshot, when the images are not linked, PTGui will
just use one of the 3 exposures. This looks sharp but it's not HDR.

The solution is to link the images for HDR, but don't link their positions.

When you do Images - Link HDR Bracketed Exposures, choose the second
option. Then run Align Images. PTGui will not only generate control
points between each bracketed set, but also between individual exposures
in each bracketed set.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

On 6/7/25 16:42, Laurent wrote:
> Hi everyone,
>
> I'm facing an issue I can't figure out.
>
> When merging some HDR panoramas (using 3 bracketed exposures), part of
> the final image ends up blurry — it looks like motion blur, even though
> I shot everything on a tripod. You can see it in the screenshot below.
>

> Capture d'écran 2025-06-07 163718.png
>
>
> When I dissociate the 3 exposures, that part of the image is perfectly
> sharp.
>
>

> Capture d'écran 2025-06-07 163401.png
>
>
> Could this be caused by something during the shooting process, or is it
> more likely a setting in PTGui?
>
> Thanks in advance for any insights!
>
> Laurent
>

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[Laurent]

Hi Joost,

Thanks for this. :-)

Linking HDR then align provide a great result as you can see. 

Have a nice day

Laurent