hhm strange, because i had to change that setting to use the manual lens atall, without changing it the shutter simply wouldnt release, but its still not reading the light levels, ill take a look when i get home and see if theres another setting i need to change
edit: took a brief look online and it says that if i now press the green button of the preview switch it should light meter for me, hopefully it will be that simple when i finish work