Ahhh, what good timing Canon. Seriously.
So, continuing on from the rather fun Nikon D3s thread, what have Canon done right and wrong? In my opinion, the inclusion of 1080p is a good move (especially as it has all the 24/25/30 etc modes) and is certainly a step up over Nikon's 720p. Nikon also have a nasty reputation for rolling shutter problems that they don't seem able to fix at the moment, so Canon really are ahead in the new area of vSLRs.
High ISO? Blah. As I said in the D3s thread, these 100k numbers are ridiculous and unnecessary. Canon and Nikon seem to take great delight in pushing this meaningless number as high as they can go. Personally, they need to concentrate on the usable ISO performance (ie: 100-3,200 possibly 6,400) rather than these expansion areas.
Sticking with APS-H is also a contentious move. I have no doubt Canon could have gone full frame - they've proved that the technology can handle the data throughput (16mp at 10fps is a hell of a lot). So why stick with APS-H? Well, personally, I think it is because APS-H has some benefits that make it worthwhile - the sensors are big enough to allow for better noise handling than APS-C, and the 1.28x crop also gives some reach for those telephotos. Seeing as this is a sports/action camera, the most common lenses used will be a telephoto, and getting some free extension is always a bonus - hell, the APS-H sensor is almost the same as using a 1.4x TC without the stop loss of light.
I like APS-H. It doesn't kill the fisheye effect totally unlike APS-C cameras, and it provides a nice balance between ISO performance and free focal extension. Now, I would also comment that most pros would be using a two-camera system minimum, and they'll most likely have another FF body in the mix anyway.
New AF? Hm. On the fence on this one - sounds great, but the Mark III fiasco has made me skeptical. Canon better have done some quality testing this time round.
Other good bits? The new user profiles looks interesting, particularly for an agency environment with shared kit. Embedded copyight/metadata is a big bonus too, as it'll save doing it in PP. Nice high-res screen too.
As a Mark III owner, will I upgrade? Maybe. I'll be getting my hands on an IV next week for a short time, and then I'll get a loan from Canon. Only after that will I be able to say. However, stacked against it is the fact that my Mark III still takes great images, at a resolution high enough for print work, and the AF has been fixed. The Mark IV offers me more MP (but I have a 5D Mark II for that...) and video (and again, I have a 5D...).
As I'll be shooting a few shots next week, any requests if I can manage to stick my CF card in? I'll try and get a range of ISO images for a start, and a video clip
In other Canon news today?
http://www.canon.co.uk/About_Us/Press_Centre/Press_Releases/Industrial_Products_news/Canon_CX-1_to_improve_retinal_examination_speed_and_efficiency.asp
Awesome, thanks Canon. Mydriatic and non-mydriatic in one system, get in! I'll probably get one of these ordered for work.
http://www.canon.co.uk/About_Us/Press_Centre/Press_Releases/Consumer_News/Cameras_Accessories/EOS_5D_MarkII_Media_Alert.asp
Also great news. Glad to see Canon aren't abandoning the 5D Mark II's video modes and leaving it behind the curve.
[EDIT: Well, smoke me a kipper, the pricing in the UK is insane. Pre-order at £4499.99. Sorry, but a £1500 increase over the 1D Mark III increase is just insane - I was expected a £3,499 price tag. This £4500 is MORE than an EOS 1D Mark III. This also doesn't tally up with the US price either, by a long shot.
http://web.canon.jp/imaging/eosd/samples/eos1dm4/ - SAMPLES]