From Slashgear via China

1Ds Mark IV Specs

  • CMOS Size: 36×24mm, 21MP.
  • ISO25-12800 (Ext ISO10, 25600, 51200 )
  • 69 focusing points (TTL-AREA-SIR II AF)
  • Flash Sync Mode of 1/4000 ESR
  • External HD and USB2.0
  • 4:3 and 16:9 display
  • HDMI, LiveView
  • 6.8 fps
  • 2 DIGIC4 processors
  • 24fps or 30fps HD Movie

There is also a info in regards to new lenses
“2 upgrade lens come out with 1Ds Mark IV, 100-400L F4.0-5.6 IS and 50/F1.4 USM”

The 100-400 will be a hot rumor until it's actually replaced. Don't expect a 50 f/1.4 USM upgrade before a revamp of the 35L & 135L.

EF 400 f/4L IS [CR2]

A different source claims Canon has demo versions of a non DO 400 f/4L IS lens in the hands of testers. This is something I heard a few months ago, and it has resurfaced.


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  1. It seems a safe bet that Canon will release the next 1Ds model within the next few months. Sales of the 1Ds Mk III have probably slowed to a crawl with the new 5D Mk II about to hit the market with a better sensor, and any pro wanting this body has bought it long ago. Also, Canon’s profits are way down so maybe releasing this expensive body will be a needed shot in the arm for sales.

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