Exercise - Fitting the frame to the subject

I went to town to do this exercise and I found a few objects in mind, buses, bikes and telephone booths. I took photos of them all but I chose buses at the end of my reviewing process.
All the buses were from different buses because they were running around town.

1) conventional viewpoint
it's obvious that it's a bus.







2) fit frame tightly
I think it has highlighted the object more, more predominant to the surrounding.








3) zoom in
it's a bus number 109 but you don't know what it looks like unless you have seen it before.









4) small part of the frame
the bus is less predominant now.







Using photo number 4, I use crop tool to crop the picture as below:
L frame 1












L frame 2












L frame 3








I think the cropping tool makes the bus stands out more and it makes the composition looks differently. I prefer the one below (L frame 3).