The first thing that we can comment about the main character and his voyeur habits that are caused by boredom is that he is a photographer in a double meaning: he is a professional photographer for a living and the photography of the film is determined by the possition of the character in the setting.
Also, he uses the camera and the teleobjective as a peeping tool to spy on his neighboors, therefor, it has an intertextual meaning.
We can also comment that when he is assualted by the suspect, Lars Thornvald, he uses his camera and the flashes to fight for his life, so it is an extension of his body.
Another element to read in terms of intertextuality is the relations between men and women.
The character portrayed by James Steward, Jeffries, has a relationship with Lisa, played by Grace Kelly.
He shows lack of commitment, as he does not want to get married and fears the same kind of routinary life he has spied on some neighbours.
We can say that "Jeff" has established voyeur bonds with some of his neighbours, some of them are female.
These include Miss Torso (nickname by him) , a girl who is always exercising and in a happy mood, recieving male visits. Jeffries has given her this nickname because he only regards her as a body, without a personality. He thinks she is always seeing men, but in fact, at the end of the movie, we can see that she is full of joy for the return of the little boy from the army.
Another female neighbour nicknamed by Jeff is Miss Lonleyheart. She is in her forties and prepares herself for imaginary dinners with imaginary dates. At first, Jeffries laughs at her, but with time he feels sorry for her, when she ends up crying and drinking.
We can asume that the position towards women of Jeff is a statement from its time.