thank you
alright it works i can scale both cameras and lights in size.
but when i go create again the next one created
remains so supertiny each time that i see nothing in the viewport
only if i select them in outliner with move scale or rotate tool on i
get the axis handles of those tools but the symbol itself is so tiny
its not displayed.


so your idea is a first sollution around the problem
but does not solve it really becuase i would like to return to creation standarts by default.