Hi All
heres my small list of hotspot lenses

Ef 10-22
Ef 35-70
ef 28-200 (sigma)
ef 70-300 (sigma)
ef 300 + (anything above the focal length of 300)
ef 18-55
ef 28-105
ef 28-80
ef 50 mm (sigma - macro) + bellows

the amount of hotspotting is variable but one way of making sure it does not happen is to place black card above the filter to stop the stray light from behind hittin the filter.

More research to be done.

john