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Hi Everyone, I am hoping for a little help with something that has been confusing me recently. I have seen a lot of posts in the forums where people are saying things along the lines of the 56mm f1.2 Fuji lens should really be considered as a f1.8 when compared to lenses on a full frame camera? Is this correct? The thread I saw it in most recently was: http://prometheus.med.utah.edu/~bwjones/2014/08/fuji-56mm-f1-2/ specifically the following post: I understand the theory, (ie bigger lenses mean more light) but surely this has all been factored into the Fuji lens calculations to ensure the comparisons are accurate. There are also factors such as the sensors proximity to the back of the lens on mirrorless cameras that to some extent must cancel the size issue out. I would really appreciate some help understanding this one. Thanks John