Updated (September 2010): Compare the Nikon D3100 vs Nikon D7000

Nikon D7000 vs Nikon D3100

Winner
Nikon D7000

83

Nikon D3100

54

Runner-up

Reasons to buy the Nikon D7000

Great color depth
Color depth
23.5 bits
Wide dynamic range
Dynamic range
13.9 EV
Large viewfinder
Viewfinder size
0.62x
Weather sealed
Weather sealed
Shoot in extreme weather
 

Reasons to buy the Nikon D3100

Size
Really small
Prosumer size (124×97×74 mm)
Sensor cleaning
Self cleaning sensor
Avoids dust in your photos
Thickness
Thin
2.9"
Movie format
Full HD
1080p @ 24fps

galleries

Explore our gallery of 48 sample photos taken by the Nikon D3100.
Explore our gallery of 50 sample photos taken by the Nikon D7000.

competitors

Nikon D7000 Competitors

Nikon D7200

Nikon D7200

Entry-level DSLR

$789 - $997 body only

$1,076 - $1,297 with 18-140mm lens

Screen resolution Much higher resolution screen
Movie format Lower frame rate movies
Movie continuous focus Doesn't focus continuously recording movies
Nikon D7100

Nikon D7100

Entry-level DSLR

$685 - $697 body only

$997 - $1,100 with 18-140mm lens

Screen resolution Much higher resolution screen
Movie format Lower frame rate movies
Battery life Shorter battery life
Nikon D5300

Nikon D5300

Entry-level DSLR

$597 body only

$478 - $697 with 18-55mm lens

Movie format Lower frame rate movies
HDR Has in-camera HDR
Viewfinder size Significantly smaller viewfinder

Nikon D3100 Competitors

Canon EOS Rebel T5

Canon EOS Rebel T5

Entry-level DSLR

$310 body only

$348 - $399 with 18-55mm lens

Screen resolution Much higher resolution screen
True resolution Significantly higher true resolution
Color depth Worse color depth
Nikon D3300

Nikon D3300

Entry-level DSLR

$460 body only

$350 - $447 with 18-55mm lens

Screen resolution Much higher resolution screen
Dynamic range More dynamic range
Size Slightly larger
Nikon D3200

Nikon D3200

Entry-level DSLR

$377 body only

$390 - $419 with 18-55mm lens

Screen resolution Much higher resolution screen
Dynamic range More dynamic range
Thickness Thicker

discussion

Nikon D7000
D7000
Nikon

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Nikon D3100
D3100
Nikon

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Showing 8 comments

Avatar for Snapsort Snapsort (4:29 PM, April 05, 2011)
Hi Mohd, camera weight is a factor. I have shot with the Nikon D3 with the 24-70 f/2.8 lens, and it is really heavy, my wife can't hold it with one hand.

A DSLR that offers great image quality but is still light and small would be great!
 
Avatar for Mohd Baker Mohd Baker (10:18 AM, March 31, 2011)
if you think weight is more important than image quality, why you're interested in a DSLR in the first place? a point and shot camera is going to be extremely useful for you since they can be more than 2X lighter than a D3100.
 
Avatar for Mohd Baker Mohd Baker (9:50 AM, March 31, 2011)
I think by the time you master your photography and feel the limitation of your D3100, there will be another update cycle in Nikon range of cameras, probably you'll be getting the D7100.
 
Biomarkunit (5:03 AM, March 21, 2011)
I agree, the D3100 is a smaller device which can easily replace any digital camera out there, there is no much potential in the D3100 for the price its offered at. However the D7000 is such a awesome piece of equipment. Im getting the D3100 and probs get the D7000 once I become better at Photographer.

Does anyone think having both is a waste of money? I figure since i will invest in Nikkon lenses I could just get the D7000 body by itself.
 
Ipatronius (5:46 AM, February 20, 2011)
OK, I just bought the D7000. I do love it. It is incredibly capable and though larger than the 3100, it's still much smaller than all the big honking Pro cameras. I was going to sell my D3100 but I love that too and nothing fits better in my small hands. So I'm just gong to have to keep it too!
 
Ipatronius (0:37 PM, February 19, 2011)
Don't forget the D-7000 has the command flash ability and IR remote, both lacking in the D-3100. But the smallness and lightness of the D3100 is very significant to me, especially when carrying around while travelling. I may have to keep my 3100 for trips and get a 7000 for taking portraits and use around the home....
 
Rick (1:24 AM, February 07, 2011)
lighter means more plastic, I prefer the weight.
 
Liamong27 (11:43 AM, January 19, 2011)
I know that The Nikon D7000 is more nicer but to be honest i find the Nikon D3100 more useful because its more lighter and much more cheaper even though i can afford the Nikon D7000 for me Nikon D3100 is MUCH MUCH MUCH better......