Nikon D3X
Competitors

As well as being compared against other pro DSLRs, the Nikon D3X is also often compared to entry-level DSLRs and mirrorless. The Nikon D3X's top rivals come from Nikon (such as the D800 and the D4) and Canon (such as the EOS-1D Mark IV and the EOS 5D Mark III)

Generally, some of the advantages of the Nikon D3X compared to other pro DSLR competitors include: it has slightly better image quality (88.0 vs 82.0), has slightly wider dynamic range (13.7 EV vs 12 EV), takes slightly higher resolution photos (24.4 MP vs 16 MP), has a much longer battery life (4400 shots vs 1500 shots) and uses fast phase detection autofocus (phase detection vs contrast detection).

However, on average it is slightly more noisy at high ISO (1,992 ISO vs 2,853 ISO), has a slightly smaller screen (3.0" vs 3.2"), slightly lower maximum light sensitivity (1,600 ISO vs 12,800 ISO), doesn't shoot as fast continuously (5 fps vs 9 fps) and lacks a built in HDR feature.

Nikon D800 3 years newer $2,999 - $3,000 (body only)	Significant advantages of the D800 (vs the D3X) Lower noise at high ISO: 2,853 ISO vs 1,992 ISO Much higher true resolution: 36.2 MP vs 24.4 MP Significantly larger screen: 3.2" vs 3.0" Significant disadvantages of the D800 (vs the D3X) Much shorter battery life: 900 shots vs 4400 shots common strengths of the D800 and D3X Good image quality: 95.0 vs 88.0 Good dynamic range: 14.4 EV vs 13.7 EV Good color depth: 25.3 bits vs 24.7 bits
	Compare the D800 vs the D3X
Nikon D4 3 years newer $5,999 - $6,000 (body only)	Significant advantages of the D4 (vs the D3X) Significantly lower noise at high ISO: 2,965 ISO vs 1,992 ISO Significantly larger screen: 3.2" vs 3.0" Has an external mic jack Significant disadvantages of the D4 (vs the D3X) Much shorter battery life: 2600 shots vs 4400 shots Significantly lower true resolution: 15.9 MP vs 24.4 MP common strengths of the D4 and D3X Good image quality: 89.0 vs 88.0 Good dynamic range: 13.1 EV vs 13.7 EV Good color depth: 24.7 bits vs 24.7 bits
	Compare the D4 vs the D3X
Nikon D3S 10 months newer $5,197 (body only)	Significant advantages of the D3S (vs the D3X) Significantly lower noise at high ISO: 3,253 ISO vs 1,992 ISO Has an external mic jack Has a self cleaning sensor Significant disadvantages of the D3S (vs the D3X) Much lower true resolution: 12.1 MP vs 24.4 MP common strengths of the D3S and D3X Minimal startup delay: 300 ms vs 300 ms Very long battery life: 4400 shots vs 4400 shots Large sensors: Full frame 36.0x23.9mm vs Full frame 35.9x24.0mm
	Compare the D3S vs the D3X
Canon EOS-1D Mark IV 10 months newer $5,000 - $5,930 (body only)	Significant advantages of the EOS-1D Mark IV (vs the D3X) Significantly more cross-type focus points: 39 vs 15 Shoots significantly faster: 10 fps vs 5 fps Has a self cleaning sensor Significant disadvantages of the EOS-1D Mark IV (vs the D3X) Significantly worse image quality: 74.0 vs 88.0 Much shorter battery life: 1500 shots vs 4400 shots Worse color depth: 22.8 bits vs 24.7 bits common strengths of the EOS-1D Mark IV and D3X Supports RAW Multiple storage slots: 2 vs 2
	Compare the Canon EOS-1D Mark IV vs the Nikon D3X
Canon EOS 5D Mark III 3 years newer $3,499 - $3,500 (body only) $4,299 - $4,300 24-105mm lens	Significant advantages of the 5D Mark III (vs the D3X) Significantly larger screen: 3.2" vs 3.0" Has an external mic jack Better maximum light sensitivity: 25,600 ISO vs 1,600 ISO Significant disadvantages of the 5D Mark III (vs the D3X) Much shorter battery life: 950 shots vs 4400 shots Less dynamic range: 11.7 EV vs 13.7 EV common strengths of the 5D Mark III and D3X Minimal startup delay: 100 ms vs 300 ms Large sensors: Full frame 36.0x24.0mm vs Full frame 35.9x24.0mm Many focus points: 61 vs 51
	Compare the Canon EOS 5D Mark III vs the Nikon D3X
Canon EOS-1Ds 1 year older $9,135 - $9,321 (body only)	Significant advantages of the EOS-1Ds (vs the D3X) Has a self cleaning sensor Significantly thinner: 3.1" vs 3.5" Significant disadvantages of the EOS-1Ds (vs the D3X) Much lower resolution screen: 230k dots vs 920k dots Slower autofocus: Contrast detection vs Phase detection common strengths of the EOS-1Ds and D3X Large sensors: Full frame 36.0x24.0mm vs Full frame 35.9x24.0mm Supports RAW Multiple storage slots: 2 vs 2
	Compare the Canon EOS-1Ds Mark III vs the Nikon D3X

Generally, some of the advantages of the Nikon D3X compared to entry-level DSLR competitors include: it is much less noisy at high ISO (1,992 ISO vs 919 ISO), has significantly better image quality (88.0 vs 67.0), has slightly more color depth (24.7 bits vs 22.5 bits), has slightly wider dynamic range (13.7 EV vs 11.5 EV) and much larger viewfinder (0.70x vs 0.54x).

However, on average it slightly lower maximum light sensitivity (1,600 ISO vs 12,800 ISO), lacks a built in HDR feature, lacks and external mic jack, lacks autofocus (none vs contrast detection) and slightly fewer lenses available (121 lenses vs 162 lenses).

Nikon D7000 1 year newer $1,000 (body only) $1,100 55-200mm lens	Significant advantages of the D7000 (vs the D3X) Much smaller: Professional size 132x105x77 mm vs Large 160x157x88 mm Has an external mic jack Has a self cleaning sensor Significant disadvantages of the D7000 (vs the D3X) Much more noise at high ISO: 1,167 ISO vs 1,992 ISO Much smaller sensor: APS-C 23.6x15.6mm vs Full frame 35.9x24.0mm Much shorter battery life: 1050 shots vs 4400 shots common strengths of the D7000 and D3X Very low noise at high ISO: 1,167 ISO vs 1,992 ISO Good image quality: 80.0 vs 88.0 Good color depth: 23.5 bits vs 24.7 bits
	Compare the D7000 vs the D3X
Nikon D5100 2 years newer $500 - $597 (body only) $600 - $697 18-55mm lens	Significant advantages of the D5100 (vs the D3X) Much smaller: Prosumer size 127x96x78 mm vs Large 160x157x88 mm Has an external mic jack Has a flip-out screen Significant disadvantages of the D5100 (vs the D3X) Much more noise at high ISO: 1,183 ISO vs 1,992 ISO Much smaller sensor: APS-C 23.6x15.6mm vs Full frame 35.9x24.0mm Much shorter battery life: 660 shots vs 4400 shots common strengths of the D5100 and D3X Very low noise at high ISO: 1,183 ISO vs 1,992 ISO Good image quality: 80.0 vs 88.0 Good color depth: 23.5 bits vs 24.7 bits
	Compare the D5100 vs the D3X
Nikon D3200 3 years newer $699 - $700 18-55mm lens	Significant advantages of the D3200 (vs the D3X) Much smaller: Prosumer size 125x96x76 mm vs Large 160x157x88 mm Has an external mic jack Much lighter: 455 g vs 1,260 g Significant disadvantages of the D3200 (vs the D3X) Much smaller sensor: APS-C 23.2x15.4mm vs Full frame 35.9x24.0mm Much shorter battery life: 540 shots vs 4400 shots Many fewer focus points: 11 vs 51 common strengths of the D3200 and D3X High resolution screens: 921k dots vs 920k dots Capture extremely high resolution images: 24.1 MP vs 24.4 MP
	Compare the D3200 vs the D3X
Pentax K-5 1 year newer $888 - $1,129 (body only) $1,033 - $1,283 18-55mm lens	Significant advantages of the K-5 (vs the D3X) Much smaller: Prosumer size 130x96x72 mm vs Large 160x157x88 mm Image stabilization: Sensor shift vs None Has an external mic jack Significant disadvantages of the K-5 (vs the D3X) Much more noise at high ISO: 1,162 ISO vs 1,992 ISO Much smaller sensor: APS-C 23.6x15.7mm vs Full frame 35.9x24.0mm Much shorter battery life: 740 shots vs 4400 shots common strengths of the K-5 and D3X Very low noise at high ISO: 1,162 ISO vs 1,992 ISO Extremely good image quality: 82.0 vs 88.0 Good color depth: 23.7 bits vs 24.7 bits
	Compare the Pentax K-5 vs the Nikon D3X
Nikon D3100 1 year newer $500 - $547 18-55mm lens	Significant advantages of the D3100 (vs the D3X) Much smaller: Prosumer size 124x96x73 mm vs Large 160x157x88 mm Much lighter: 505 g vs 1,260 g Has a self cleaning sensor Significant disadvantages of the D3100 (vs the D3X) Much more noise at high ISO: 919 ISO vs 1,992 ISO Much smaller sensor: APS-C 23.1x15.4mm vs Full frame 35.9x24.0mm Much shorter battery life: 550 shots vs 4400 shots common strengths of the D3100 and D3X Minimal startup delay: 400 ms vs 300 ms
	Compare the D3100 vs the D3X
Canon Rebel T2i 1 year newer $544 - $949 (body only) $649 - $867 18-55mm lens	Significant advantages of the T2i (vs the D3X) Much smaller: Prosumer size 129x98x62 mm vs Large 160x157x88 mm Has an external mic jack Has a self cleaning sensor Significant disadvantages of the T2i (vs the D3X) Much more noise at high ISO: 784 ISO vs 1,992 ISO Much smaller sensor: APS-C 22.3x14.9mm vs Full frame 35.9x24.0mm Much shorter battery life: 440 shots vs 4400 shots common strengths of the T2i and D3X High resolution screens: 1,040k dots vs 920k dots Capture very high resolution images: 17.9 MP vs 24.4 MP Minimal startup delay: 400 ms vs 300 ms
	Compare the Canon EOS Rebel T2i vs the Nikon D3X

Generally, some of the advantages of the Nikon D3X compared to mirrorless interchangeable-lens competitors include: it is much less noisy at high ISO (1,992 ISO vs 346 ISO), has much better image quality (88.0 vs 54.0), has a much larger screen (3.0" vs 2.5"), has a significantly higher resolution screen (920k dots vs 230k dots) and has higher quality type of viewfinder (pentaprism vs digital).

However, on average it doesn't shoot as fast continuously (5 fps vs 60 fps), lacks and external mic jack, lacks autofocus (none vs phase detection), has slightly more shutter lag (161 ms vs 97 ms) and has much fewer focus points (51 vs 135).

Leica M9 9 months newer $6,995 (body only)	Significant advantages of the M9 (vs the D3X) Much smaller: Mid size 139x80x37 mm vs Large 160x157x88 mm Much lighter: 585 g vs 1,260 g Much thinner: 1.5" vs 3.5" Significant disadvantages of the M9 (vs the D3X) Much shorter battery life: 600 shots vs 4400 shots Much more noise at high ISO: 884 ISO vs 1,992 ISO Much smaller screen: 2.5" vs 3.0" common strengths of the M9 and D3X Relatively low noise at high ISO: 884 ISO vs 1,992 ISO Good image quality: 69.0 vs 88.0 Viewfinders: Rangefinder vs Pentaprism
	Compare the Leica M9 vs the Nikon D3X
Nikon 1 V1 2 years newer $797 - $947 10-30mm lens	Significant advantages of the V1 (vs the D3X) Much smaller: Mid size 113x76x43 mm vs Large 160x157x88 mm Video autofocus: Phase detection vs None Shoots much faster: 60 fps vs 5 fps Significant disadvantages of the V1 (vs the D3X) Much shorter battery life: 350 shots vs 4400 shots Much more noise at high ISO: 346 ISO vs 1,992 ISO Much worse image quality: 54.0 vs 88.0 common strengths of the V1 and D3X High resolution screens: 921k dots vs 920k dots Viewfinders: Digital vs Pentaprism Both use faster phase detection autofocus which is uncommon: Phase detection vs Phase detection
	Compare the 1 V1 vs the D3X