TIFF export

[Markus Zuber]

Hi

I am experiencing problems when exporting panos to TIFF, 16bit, with Alpha channels.

I do not see any Alpha channel and the TIFF shows up in Photoshop 2026 on layer 0 and not on the background. This is new – and I have not change anything in my settings. A bug?

Thanks for checking, Markus

[Erik Krause]

Am 03.05.2026 um 20:46 schrieb Markus Zuber:

> I do not see any Alpha channel and the TIFF shows up in Photoshop 2026 on
> layer 0 and not on the background. This is new – and I have not change
> anything in my settings. A bug?

Looks as if that was changed in v13. In v12 under Settings I could
choose between associated, unassociated, separate and no alpha.
"separate" gave a background image and an additional alpha channel.

v13 has only with or without alpha. "With alpha" gives a layer with
transparency, same as associated and unassociated in v12.

However, it is easy to get the separate alpha channel in photoshop: Do
Select -> Save Selection, then Select -> Load Selection, choose New
Channel and name it alpha. Last Press Ctrl+D to deselect. You can record
an action to have this as a one click solution. You can even create a
droplet (via ‘File’ -> ‘Automate’) and register this droplet as a
‘Viewer’ under ‘PTGui Tools’ -> ‘Options’ -> ‘Viewer’, so that it runs
automatically in Photoshop when you click ‘View’ on the ‘Create
Panorama’ tab.
--
Erik Krause
http://www.erik-krause.de

[Markus Zuber]

The question is not whether and how this can be "solved" in Photoshop. The problem is that I am expecting a progress in a new (paid) upgrade – and here I see a loss of functionality, which has to be handled by a tedious procedure.

Therefore, I ask Joost to bring back the old functionality of a.) separate alpha channel selectable and b.) image appearing on the background instead of level 0.

For the moment I am tempted to go back to v12 since I do not see an advantage over v12 - for my personal needs, since my wishes are still on the wishlist and have never managed to enter a new release (cropping with selected aspect ratio).

But Apple will force us anyway to go for the very latest version if we want to work on their latest OSs...

[PTGui Support]

Hi Markus,

This was changed recently to be in line with the other file format
output settings (With alpha / Without alpha). I wasn't aware that
Photoshop actually distinguishes between these different kind of alpha
channels. It will be reverted to the old behavior in the next update.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

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[Markus Zuber]

Cool, thanks Joost
Very much appreciated
Best, Markus



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