I found nice looking house and wanted to recreate it, used fSpy instead of BLAM, but found it works well. I placed cubes instead of normal models. My problem is, that there is second and third photo of this room and i can't match perspective of the second camera to the ready scene. I tried fSpy, but it hasn't fitted it properly. What should i do if i want to fit 2nd camera to both scene and reference by hand?
I got it. The nunmer of solve errors was about 3.2, but now it fits perfectly. Firstly i used fSpy, copied focal lenght and pasted it into camera settings in mation tracking. After that i changed refine from none to focal lenght and optical center. The most important thing is that i made a perpective point on the table. It caused so high solve error, but it works. Unfortunately i must redo models, but now it perfectly matches.