My Canon 5D Mark III arrived yesterday from Adorama (also available from amazon.com
but shipping date is unclear). I immediately took it out in the bright sunshine and tested the autoexposure system in the high-contrast conditions that often resulted in exposure errors of more than two f-stops by the 5D Mark II. The Mark III handled these conditions beautifully.
The amazing new autofocus system is not all that amazing for taking pictures of children (my subject). There are 61 autofocus points but the probability that the camera chooses the one that corresponds to your subject’s eye is very small (about 1 in 61!). The $3500 camera actually has face-detection capability (just like a $100 camera!), but as far as I can tell it is only available in the video mode. This is presumably because the sensor doesn’t see the image until the mirror flips up, but in any case it is not really a wonderful thing to have a picture of a child with a perfectly focused elbow and an out of focus face.
The silent operation mode is very nice. I’ve heard enough SLR mirror slap to last me the rest of my life.
A huge number of the camera’s features relate to post-processing of the image, e.g., optimizing for tone and contrast or correcting for lens design shortcomings. The 400-page manual does not make it clear if these settings have any effect on RAW files or if they are only applicable to JPEGs produced in the camera.
The switch layout is slightly different than on the Mark II camera and the menu layout is dramatically different. Some of the differences relate to giving more priority to video capture with a big “still/video” switch on the back of the body. The baroque custom function interface of previous bodies has been cleaned up.
Overall it is impressive that the camera, part of the first batch shipped to the U.S., works at all. If this amount of new software were delivered by a typical software company, there would be daily required patches!
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