Tiff & transparency

[Janjak]

Hi !

 

I was used to save some work in .tiff to keep the transparent layer before sending the file to Autopano

Is there any way to have this with AP ?

On the .tiff file exported with AP the transparency becomes white...

 

Regards,

Janjak

[mac_heibu]

Transparency within a TIF is a "private" feature implemented by Adobe. You can't be sure, that other non Adobe applications will support this.

If you want to keep transparency in your output file, use a file format, which supports this generally: PDF or, if RGB color is used, PNG.

[MikeW]

Transparency within a TIF is a "private" feature implemented by Adobe. You can't be sure, that other non Adobe applications will support this.

If you want to keep transparency in your output file, use a file format, which supports this generally: PDF or, if RGB color is used, PNG.

 

Transparency is part of the TIFF specification. It is implemented in most all image editors. All of my various applications, from vector design software, to image editors, to layout applications can handle transparency in TIFF files.

[Alfred]

Transparency within a TIF is a "private" feature implemented by Adobe. You can't be sure, that other non Adobe applications will support this.

 

I suspect that you're thinking of layers rather than transparency.

[mac_heibu]

Layers is clearly a private implementation. I was sure, transparency too.

[gdenby]

I made a very simple transparent .tiff. Just a rectangle on a page set to transparent. It opened with the rectangle on a transparent background in Photoshop Elements, GIMP, and Pixelamator. Several other programs either rendered the page w. a white background, or simply failed to show anything. 

 

My suspicion is that Autopano expects certain parameters to understand transparency. Perhaps output from AD, open in another app that has worked w. Autopano, and save.

[R C-R]

Layers is clearly a private implementation. I was sure, transparency too.

Transparency is part of the baseline TIFF 6.0 specification. (All TIFF readers should support all baseline features.) For all the gory details see https://partners.adobe.com/public/developer/en/tiff/TIFF6.pdf. Beginning on page 31, it explains the several ways alpha channels can be implemented with the "ExtraSamples" tag.

 

To export a TIFF from AP with transparency preserved, it should only be necessary to make sure Matte is set to none (white rectangle with a red slash mark through it), either in the "More" section of an export done from the Pixel persona or in the Export Options panel in the Export persona.