Suitable workflow for large panos with capture one

[Reinhard Hofmann]

Hello together,

I am new to the group. I have downloaded the trial version to test PTGui. The first results look very good!

But I encountered a problem in combination with capture one. Unfortunately capture one is not able to handle pictures with more than 64.000 pixels in width or height. I am trying to figure out, how to handle huge panos. Does anyone have a suitable workflow to overcome this restriction?

Two ideas. I have:

Idea 1:

1) use RAW pictures in PTGui to create a huge pano. But at output to tiff (16bit), crop it to max. 64k pixels.

2) load tiff into capture one and do all color corrections, etc.

3) copy all color corrections, that have been done with the tiff, to all RAW files

4) export all RAW files to 16 bit tiffs

5) Use same PTGui project (as used in step 1), but replace all pictures by exported tiffs

6) export pano -> finished

Idea 2:

1) same as Idea 1, but do not crop, but scale resolution to fit into 64k pixels

What do you think?

Thank you and Best Regards,

Reinhard

[John Houghton]

Reinhard, That all seems rather complicated if I understand it correctly.  You could try it using a small sample of images to see if indeed it would work.  One thing that you would need to be aware of is that different raw converters can deliver different sized images, so simply replacing images in a project might not work precisely as expected.  And similarly, you would need to avoid any lens distortion correction being carried out automatically in one converter but not the other.  PTGui uses the LibRaw converter and I know that this gives slightly more pixels than the Adobe raw converter.

John

[Reinhard Hofmann]

Hi John,

thank you very much for your feedback. I played around and found following workflow. The result looks very good. I want to try more
different examples.

I didn't know that different RAW converters deliver different image sizes. Therefore I use only one RAW converter in my workflow. Thank you :)

My current workflow:

1) in capture one: export all images to 16bit TIFF, no color correction or correction of distortions, color profile: sRGB

2) in PTGui: load pictures, align them and export the pano as TIFF, 16bit with scale to max 64k bits in largest direction

3) in capture one: load TIFF pano, do color corrections. Copy all corrections into clipboard

4) in capture one: switch to original images and paste the copied color corrections to all images

5) in capture one: export all images to 16bit TIFF and replace previous exported images, color profile: sRGB

6) in PTGui: load previous project, no new alignment, export pano as TIFF with scale to 100%

Reinhard

[Stephan Weber]

Why not simply scale down the source pictures to 50%. Most programs can do this on many pictures with few clicks.

--
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/ptgui/375bee4b-7e55-44de-88a5-189c7c4ce95dn%40googlegroups.com.

[Reinhard Hofmann]

Hello  Stephan,

I want to get high resolution panos. But I also want to use capture one for RAW development and color effects. Therefore I am looking for a workflow that fulfills both. The intermediate pano with reduced resolution will only be used to figure out the parameter for color correction. 

Reinhard 

[Stephan Weber]

Understood. My experience is that most services cannot really exploit sizes like 64k x 400k, and scale down internally anyway.

To view this discussion on the web visit https://groups.google.com/d/msgid/ptgui/da447722-7230-4ae3-bc28-1786e3a93359n%40googlegroups.com.