Да не вопрос, вот про 5DMII:
* AI Servo (continuous AF) not as good as EOS-1 series or Nikon D700
* Default noise reduction quite heavy at anything over ISO 400 (can be turned down though)
* JPEG output a bit soft when viewed at 100%
* Still pretty average automatic white balance in artificial light
* No mass storage device USB mode
* Built in microphone not great, and not usable for audio notes (EOS-1 series feature)
* Auto LCD brightness control can mean preview image doesn't match recorded image
* Even with My Menu system, mirror lockup not as easy to use as other brands
* No selectable lower and upper limit for auto ISO
* No built-in flash (would be useful, if not essential)
* Weather sealing not as good as some competitors
* Continuous shooting speed slowest of any current full frame DSLR
* Doesn't have quite as much highlight dynamic range 'headroom' (in RAW) as the D700 or Alpha 900
По мне так эти минусы не на столько значимые как у Соньки. Ну и еще, ответ на Ваш вопрос почему пишу только плохие мнения. Минусы о камере говорят намного больше чем похвальбы. Ибо Калина тоже машина классная, но вот одна беда - ездит херово.