Mixing short and long focal

[AdrienB]

Hello people,

I'm actually trying something with a building ( 15m height ) i haven't got any material to go so high, so i took my 100-300m sigma to go 20m far from the building and take pictures, of course, it didn't work, i have searched on the forum, but didn't found something interesting...

Is that impossible to mix short ( 24mm ) and long ( 150mm ) focal ? no tips ? no manual process ?

Actually, my point cloud look like the building collapsed ...

thanks !

[Alexey Pasumansky]

Hello AdrienB,

Very long focal length, according to the users' experience may be a problem.

Also when mixing several sources of the data, it is important to maintain more or less same level of detail on the overlapping images, otherwise the pictures wouldn't match.

[AdrienB]

Hello Alexey !

I tried some other process, it seems to work with a little bit less points limit, liaison points limit ( from 40000/4000 to 30000/3500 ) and 2 markers only on few each kind of pictures ( wide and short focals ).

I'll tell here the quality result of the dense point cloud.

Sure my pictures have the same level of details, i just want to " break " the perspective, not going deeper in details.

Thank you