[email protected] schrieb am Montag, 22. März 2021 um 18:54:42 UTC+1:

> I figured adding the h and v points would help. Is that wrong?
>
> What's the rule (of thumb?) for deciding on the projection?
>

No that's right. When you want straigt horizontal and vertical lines you 
have the use the rectilinear projection, because this is the only 
projection which preserves these lines. All other projection create more or 
less curved horizontal or vertical lines.

(The pto files in the provided archive was set to equirectangular 
projection - which will make problems. Maybe you have send an other 
version.)

 
>
>> I did the following
>> * On stitching tab or in fast preview window set panorama projection to 
>> rectilinear.
>> * Now go the photos tab, reset lens parameters in context menu.
>> * First optimise position (yaw, pitch and roll) only
>> * Then optimise position and translation
>> * Go the preview window and adjust field of view and crop.
>>
>
> Thanks. I'll try this.
>
> Same question as above, is there a rule (of thumb?) for deciding which 
> things to optimize first?
>

The general rule would be: Start with only the basic variables (yaw, pitch, 
roll) and add the others step for step.

For example, I'd have thought what I'm trying to do is like the mosaic 
> tutorial, but there the optimization is just for translations.
>
 
It depends on the exact use case, so it is difficult to give an general 
advice.

-- 
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