Originally Posted by
ORDnHKG
If you pay attention, the freighter version always have short upper deck even for 747-400,(the upper deck looks like it is a 747-200) as the upper deck for freighter always only use as crew rest area, not for cargo.
For the search impaired (not referring to ORDnHKG), a 747-400F. Note the winglets characteristics of the -400s (except the -400D).
For any freighters that have big upper decks, those are converted from pax version like from a 300 or 400, not originally deliver as freighter.
Example of a passenger 747-400 converted to cargo hauler (Boeing Converted Freighter)
To add to the confusion. KLM was even converting its pax/combi 747-200s to a stretched upper deck that the 747-300s had.