If you have a full frame Canon EOS 5d model, you will need to guarantee - E4 battery grip type.

如果你拥有全画幅佳能EOS 5d模型，您将需要保函- E4类电池手柄。

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Many industry watchers expect Canon to release a mirrorless model this year.

WSJ: Camera Makers Enter New Mirrorless Arena for Serious Photographers

The PIXMA MG4220 model provides access to the Canon PIXMA Cloud Link for easy printing of images and documents stored online.

ENGADGET: Canon expands its PIXMA line with MG2220, MG3220 and MG4220 all-in-ones

Industry backchannel conspiracies aside, however, it's only to our advantage to have a choice -- if you're looking to upgrade your digital SLR without taking out a second mortgage, you can now pick Nikon's model, or the EOS 6D from Canon.

ENGADGET: Canon EOS 6D full-frame DSLR hands-on (video) Hands-on