Canon EOS-1D Mark III
Competitors

As well as being compared against other pro DSLRs, the Canon EOS-1D Mark III is also often compared to entry-level DSLRs. The Canon EOS-1D Mark III's top rivals come from Canon (such as the EOS 5D Mark II and the EOS 7D) and Nikon (such as the D700 and the D7000)

Generally, some of the advantages of the Canon EOS-1D Mark III compared to other pro DSLR competitors include: it has a significantly larger screen (3.0" vs 2.5"), lets you preview your photos on the screen, shoots faster continuously (10 fps vs 5 fps), has slightly less shutter lag (94 ms vs 197 ms) and has a significantly longer battery life (2200 shots vs 850 shots).

However, on average it is slightly more noisy at high ISO (1,078 ISO vs 1,815 ISO), doesn't record movies (none vs 1080p @ 30fps), has a significantly lower resolution screen (230k dots vs 920k dots), slightly smaller viewfinder (0.61x vs 0.70x) and takes significantly lower resolution photos (10.1 MP vs 17.9 MP).

Canon EOS 5D Mark II 1 year newer $2,130 (body only) $2,875 - $2,999 24-105mm lens	Significant advantages of the 5D Mark II (vs the EOS-1D Mark III) Much higher resolution screen: 920k dots vs 230k dots Shoots movies: 1080p @ 30fps vs None Much higher true resolution: 21 MP vs 10.1 MP Significant disadvantages of the 5D Mark II (vs the EOS-1D Mark III) Shoots significantly slower: 3.9 fps vs 10 fps Significantly fewer focus points: 9 vs 45 Significantly shorter battery life: 850 shots vs 2200 shots common strengths of the 5D Mark II and EOS-1D Mark III Supports RAW
	Compare the EOS 5D Mark II vs the EOS-1D Mark III
Canon EOS 7D 2 years newer $1,549 - $1,821 (body only) $1,620 - $1,849 18-135mm lens	Significant advantages of the 7D (vs the EOS-1D Mark III) Much higher resolution screen: 920k dots vs 230k dots Shoots movies: 1080p @ 30fps vs None Significantly higher true resolution: 17.9 MP vs 10.1 MP Significant disadvantages of the 7D (vs the EOS-1D Mark III) Significantly shorter battery life: 800 shots vs 2200 shots Significantly fewer focus points: 19 vs 45 Has fewer storage slots: 1 vs 2 common strengths of the 7D and EOS-1D Mark III Supports RAW
	Compare the EOS 7D vs the EOS-1D Mark III
Canon EOS-1Ds 2 years older	Significant advantages of the EOS-1Ds (vs the EOS-1D Mark III) Larger viewfinder: 0.70x vs 0.61x Significantly larger sensor: Full frame 36.0x24.0mm vs APS-H 28.7x18.7mm Significantly higher true resolution: 16.6 MP vs 10.1 MP Significant disadvantages of the EOS-1Ds (vs the EOS-1D Mark III) Much smaller screen: 2.0" vs 3.0" No live view Slower autofocus: Contrast detection vs Phase detection common strengths of the EOS-1Ds and EOS-1D Mark III Supports RAW Multiple storage slots: 2 vs 2
	Compare the EOS-1Ds vs the EOS-1D Mark III
Canon EOS 5D Mark III 5 years newer $3,499 - $3,500 (body only) $4,299 - $4,300 24-105mm lens	Significant advantages of the 5D Mark III (vs the EOS-1D Mark III) Significantly lower noise at high ISO: 2,293 ISO vs 1,078 ISO Much higher resolution screen: 1,040k dots vs 230k dots Better image quality: 81.0 vs 71.0 Significant disadvantages of the 5D Mark III (vs the EOS-1D Mark III) Significantly shorter battery life: 950 shots vs 2200 shots Shoots significantly slower: 6 fps vs 10 fps common strengths of the 5D Mark III and EOS-1D Mark III Minimal startup delay: 100 ms vs 100 ms Supports RAW Multiple storage slots: 2 vs 2
	Compare the EOS 5D Mark III vs the EOS-1D Mark III
Nikon D700 1 year newer $2,649 (body only)	Significant advantages of the D700 (vs the EOS-1D Mark III) Significantly lower noise at high ISO: 2,303 ISO vs 1,078 ISO Much higher resolution screen: 922k dots vs 230k dots Better image quality: 80.0 vs 71.0 Significant disadvantages of the D700 (vs the EOS-1D Mark III) Shoots significantly slower: 5 fps vs 10 fps Significantly shorter battery life: 1000 shots vs 2200 shots Significantly more shutter lag: 197 ms vs 94 ms common strengths of the D700 and EOS-1D Mark III Supports RAW
	Compare the Nikon D700 vs the Canon EOS-1D Mark III
Canon EOS 5D 1 year older $3,991 - $4,273 24-105mm lens	Significant advantages of the 5D (vs the EOS-1D Mark III) Significantly larger viewfinder: 0.71x vs 0.61x Significantly larger sensor: Full frame 36.0x24.0mm vs APS-H 28.7x18.7mm Significantly smaller: Professional size 152x113x75 mm vs Large 156x157x80 mm Significant disadvantages of the 5D (vs the EOS-1D Mark III) Much smaller screen: 2.5" vs 3.0" No live view Less dynamic range: 11.1 EV vs 11.7 EV common strengths of the 5D and EOS-1D Mark III Supports RAW
	Compare the EOS 5D vs the EOS-1D Mark III

Generally, some of the advantages of the Canon EOS-1D Mark III compared to entry-level DSLR competitors include: it is slightly less noisy at high ISO (1,078 ISO vs 793 ISO), has slightly more color depth (22.7 bits vs 21.9 bits), slightly larger viewfinder (0.61x vs 0.54x), has a weather sealed body and shoots faster continuously (10 fps vs 3.7 fps).

However, on average it doesn't record movies (none vs 1080p @ 20fps), has a significantly lower resolution screen (230k dots vs 920k dots), takes significantly lower resolution photos (10.1 MP vs 16.1 MP), slightly fewer lenses available (125 lenses vs 169 lenses) and is older (february, 2007 vs september, 2010).

Nikon D7000 3 years newer $1,000 (body only) $1,100 55-200mm lens	Significant advantages of the D7000 (vs the EOS-1D Mark III) Shoots movies: 1080p @ 24fps vs None Significantly better image quality: 80.0 vs 71.0 Much higher resolution screen: 920k dots vs 230k dots Significant disadvantages of the D7000 (vs the EOS-1D Mark III) Much smaller sensor: APS-C 23.6x15.6mm vs APS-H 28.7x18.7mm Much shorter battery life: 1050 shots vs 2200 shots Many fewer cross-type focus points: 9 vs 19 common strengths of the D7000 and EOS-1D Mark III Relatively low noise at high ISO: 1,167 ISO vs 1,078 ISO Both are weather sealed, which is fairly uncommon among similar cameras Minimal startup delay: 400 ms vs 100 ms
	Compare the Nikon D7000 vs the Canon EOS-1D Mark III
Canon Rebel T3i 4 years newer $619 - $700 (body only) $745 - $1,000 18-55mm lens	Significant advantages of the T3i (vs the EOS-1D Mark III) Shoots movies: 1080p @ 30fps vs None Much higher resolution screen: 1,040k dots vs 230k dots Much smaller: Professional size 133x99x79 mm vs Large 156x157x80 mm Significant disadvantages of the T3i (vs the EOS-1D Mark III) Much shorter battery life: 440 shots vs 2200 shots Much smaller sensor: APS-C 22.3x14.9mm vs APS-H 28.7x18.7mm Significantly more noise at high ISO: 793 ISO vs 1,078 ISO common strengths of the T3i and EOS-1D Mark III None found
	Compare the Rebel T3i vs the EOS-1D Mark III
Canon Rebel T2i 3 years newer $544 - $949 (body only) $649 - $867 18-55mm lens	Significant advantages of the T2i (vs the EOS-1D Mark III) Shoots movies: 1080p @ 30fps vs None Much higher resolution screen: 1,040k dots vs 230k dots Much smaller: Prosumer size 129x98x62 mm vs Large 156x157x80 mm Significant disadvantages of the T2i (vs the EOS-1D Mark III) Much shorter battery life: 440 shots vs 2200 shots Much smaller sensor: APS-C 22.3x14.9mm vs APS-H 28.7x18.7mm Significantly more noise at high ISO: 784 ISO vs 1,078 ISO common strengths of the T2i and EOS-1D Mark III Minimal startup delay: 400 ms vs 100 ms
	Compare the Rebel T2i vs the EOS-1D Mark III
Nikon D90 1 year newer $897 (body only) $1,047 55-200mm lens	Significant advantages of the D90 (vs the EOS-1D Mark III) Much higher resolution screen: 930k dots vs 230k dots Much smaller: Professional size 132x103x77 mm vs Large 156x157x80 mm Shoots movies: 720p @ 24fps vs None Significant disadvantages of the D90 (vs the EOS-1D Mark III) Much smaller sensor: APS-C 23.6x15.8mm vs APS-H 28.7x18.7mm Much shorter battery life: 850 shots vs 2200 shots Many fewer focus points: 11 vs 45 common strengths of the D90 and EOS-1D Mark III Relatively low noise at high ISO: 977 ISO vs 1,078 ISO Minimal startup delay: 300 ms vs 100 ms Great battery life: 850 shots vs 2200 shots
	Compare the Nikon D90 vs the Canon EOS-1D Mark III
Canon Rebel T3 4 years newer $333 (body only) $489 - $500 18-55mm lens	Significant advantages of the T3 (vs the EOS-1D Mark III) Much smaller: Professional size 130x100x78 mm vs Large 156x157x80 mm Shoots movies: 720p @ 30fps vs None Much lighter: 459 g vs 1,335 g Significant disadvantages of the T3 (vs the EOS-1D Mark III) Much smaller sensor: APS-C 22.2x14.7mm vs APS-H 28.7x18.7mm Significantly more noise at high ISO: 755 ISO vs 1,078 ISO Much shorter battery life: 800 shots vs 2200 shots common strengths of the T3 and EOS-1D Mark III Great battery life: 800 shots vs 2200 shots
	Compare the Rebel T3 vs the EOS-1D Mark III
Canon Rebel T1i 2 years newer $475 - $629 (body only) $549 - $580 18-55mm lens	Significant advantages of the T1i (vs the EOS-1D Mark III) Shoots movies: 1080p @ 20fps vs None Much smaller: Prosumer size 129x98x62 mm vs Large 156x157x80 mm Much higher resolution screen: 920k dots vs 230k dots Significant disadvantages of the T1i (vs the EOS-1D Mark III) Much more noise at high ISO: 663 ISO vs 1,078 ISO Much shorter battery life: 400 shots vs 2200 shots Much smaller sensor: APS-C 22.3x14.9mm vs APS-H 28.7x18.7mm common strengths of the T1i and EOS-1D Mark III Minimal startup delay: 300 ms vs 100 ms Minimal shutter lag: 159 ms vs 94 ms
	Compare the Rebel T1i vs the EOS-1D Mark III