We now have a focusing system worth of it's price point. The AUTOFOCUS system is identical to that in the 1Dx and is THE most sophisticated AF system EVER put in any Canon body. We have tested the AF point in servo and one shot mode with my fastest lenses. Speed, accuracy, and consistency have been exceptional and better than anything I have used before. AF gets the job done with zero drama. NO focus jitter, NO frontfocus, NO backfocus, Even with my Sigma 85/1.4 (which gives my 5DII bodies absolute fits) is 100% accurate with no jitter on the 5DIII. Center AF point and all peripheral AF points are all usable with fast primes. With the 5DII you just use the center AF point and hope for the best (with often mixed results).
Owners have always been thrilled with Canon's image quality. The JPEG engine in this camera is staggeringly good and a solid 2 stops better at controlling noise at high ISO than the 5DII. The 5D's third iteration, the 22.3 MP, is incredible in good light and absolutely stunning in low light. One customer bragged about capturing a dazzling photo of his black lab at night with the lights off! We give Canon top marks for continuing its commitment to a full-frame sensor in the 5D line. This feature allows a 35mm lens to provide the same line of sight as a professional film camera. It strikes the best balance of detail and noise control of any camera on the market right now. Note though that default NR in JPEG mode is fairly strong and that you will generally attain a better "look" from your files with the "low" NR setting.
It's hard to put my finger on exactly what changed, but the 5DIII just feels more substantial. It feels like a chopped down 1-series instead of a buffed up 10 series. The contour of the body has changed to fit your hand better. The rubber is also a new compound which is much grippier than before. The 5DIII feels much better to hold and use than the previous 5D bodies.
The screen won't a big improvement , but it is drop gorgeous. The height is about the same, but it's wider than that in the 5DII and fits the aspect of horizontal images perfectly now. The screen itself has better coatings which allow you to see it easier outside. The contrast, viewing angle, color, and saturation have all improved noticeably. It has a very similar look to a high end smartphone screen. This is a substantial upgrade from the 5DII's screen.
Through its wide array of features, the Canon 5D gives the consumer lots of power. Manual mode makes everything completely customizable, including an ISO range of 100-25,600. (Owners who find that too daunting can enable Auto-ISO in manual mode.) Sports photographers enjoy the burst rate of 18 raw images at six frames per second. Perhaps the most important – and best-loved – aspect of the 5D is its 61-point AutoFocus. It's fast, it works, and it enhances every photographer's abilities. A few other notable items: the “Rate” button gives photographers the ability to assign a star level to each picture, and the “Creative” button in playback displays two images side-by-side for comparison on the fly. The list of features goes on, and we love Canon for that. We did have to knock a few points off for not including a built-in flash. Many users will naturally have their own lighting, but it would have been useful nonetheless.
The Canon 5D delivers sheer versatility and power. Nevertheless, it is a difficult device to navigate; even professionals would be wise to read the manual first. Those with less experience may be better off starting with a simpler camera. The 5D line has been a staple of the freelance photography/videography industry for years, and users still love it. Don’t expect its spot at the top to go away anytime soon. Bottom line: if you are a professional, or seeking professional quality, you should give the Canon 5D Mark III consideration.
At $2499, the Canon 5D is one of the most expensive cameras on our shortlist. But, as the old saying goes, “You get what you pay for.” The 5D is a full-frame beast that is simply loaded with desirable features. The beauty of this device: it provides freelance photographers everything they need at a relatively low price (when compared with the level above it). There are more expensive DSLRs on today's market, but the difference in quality is marginal when compared to the price jump. And, while some may find the Canon's price tag high, owners swear by its amazing value.