actually, the camera poster/sign is for a forthcoming Photostrator Projekt

you don't see it very well at that low resolution but all of the shading on the camera is halftone as well (see below)

all the halftone was all cut from some halftone patterns i got from somewhere a long time ago
i believe in fact i offered them here in the clipart gallery

so, no halftone brush but I did mould some halftone around the left hand side of the camera lens

at any rate here is the camera so you can see the detail
i used an eos30D because its my camera

Click image for larger version. 

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Click image for larger version. 

Name:	vector_canon_eos30d.jpg 
Views:	150 
Size:	114.7 KB 
ID:	97543