On and off during the 15 months I've been using Canon FDn lenses on an NEX-7 and getting up to speed with helpful information from various photography forums, I've seen various comments about the effects of the NEX 1.5 crop factor on legacy lenses. But I never seem to be able to get a clear understanding of it...and no longer have Canon 35mm film cameras to run comparison tests. Some comments state actual focal length / image magnification of the subject occurs. ie: The subject image in my FDn 200mm now appear as viewed through a FDn 300mm lens on a normal 35mm film camera. Other comments state only the 'field-of-view' is affected...narrowed. ie: the FOV of my 200mm is narrowed down to that of a 300mm on a normal 35mm film camera...but the subject image is not larger. If somebody can once and for all clarify this with absolute certainty, I'd sure appreciate it.