Sort of lens hotel poet developed (9)
I believe the answer is:
telephoto
'sort of lens' is the definition.
(I've seen this before)
'hotel poet developed' is the wordplay.
'developed' indicates anagramming the letters.
'hotel'+'poet'='hotelpoet'
'hotelpoet' anagrammed gives 'TELEPHOTO'.
(Other definitions for telephoto that I've seen before include "It helps paparazzi get closer" , "Distant shooter" , "Kind of lens" , "Sort of lens" , "Long type of camera lens" .)