5D3 has instant jump to 100% view (so convenient and saves a lot of time)
5D3 has much nicer UI (IMO anyway)
5D3 isn\'t a damn brick , 1Ds3 is
1Ds3 has replacement viewfinder screens, 5D3 doesn\'t
1Ds3 has less banding junk and a bit less read noise at ISO100-200 (but the DR is already worse by ISO800 and probably even ISO400 on the 1Ds3, noticeably so by ISO1600-3200)
1Ds3 is less color-blind under natural lighting (hard to say how much and in what ways and when this matters)
I believe the 5D3 has a larger buffer
Feb 12, 2013 at 11:15 PM
Previous versions of skibum5's message #11345163 « 1DS-mk3 vs 5d-mkIII »
, 1Ds3 is