Canon EOS1-D Mark IV vs Nikon D3s. Full Frame vs Crop Sensor, eh? If crop (1.3) comparison, then it should be EOS-1D Mark IV vs D2x. You cannot compare these two system. A full-frame sensor is way too much better than crop sensor. Wait for Canon EOS-1Ds Mark IV then do the comparison. Full Frame vs Full Frame. ‘Til now, we wait.p.1 #1 · p.1 #1 · 1D Mark IV - Autofocus Problems with Birds in Flight. I have some questions about AutoFocus behavior and Custom Functions in the Canon 1D Mark IV. I moved to it from the Mark II a couple of years ago, and haven't really seen the improvement in AutoFocus performance that I expected. This is primarily for birds in flight. 1) Canon's website says you cannot use EF-S lenses on anything but the Rebel series and the XXD series, which use an APS-C sensor. I was aware of this. However, I've seen on several websites, the 1D Mk IV advertised with the 17-55, which is, according to Canon's website, an EF-S lens.
Introduction. With the launch of the Canon EOS Mark IV, Canon has introduced full HD video and a 16-million-pixel sensor to its news and sports EOS 1D series cameras. The new professional body of the Canon EOS mark iv, which is due to arrive in the UK in December 2009 priced £4,499 (?5499) body only, also has an expanded top ISO setting of ISO
The 1D Mark IV retains its predecessors' 1.3x crop, APS-H sensor size, but this time increases its pixel count to a whopping 16MP. This may not seem like many in the era of 25MP full-frame DSLRs and 14MP compacts, but it's a lot when you consider the Mark IV still has the ability to shoot at 10 frames per second. HUPL.