The most compelling evidence for me was when a filmmaker showed the moon landing photos to several Italian fashion photographers. These guys are experts in light and shadow - they all agreed that the photos had to be faked because every one of them is lit up by non-sun light sources at impossible angles. In some shots, looking into the sun, the back of the lander should be completely blacked out in shadow, but it is well lit with no details missing. The photos and lighting are too good for the harsh conditions they were supposedly shot in.