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

Nikon D7000 vs Nikon D3100

Winner
Nikon D7000

100

Nikon D3100

65

Runner-up

Reasons to buy the Nikon D7000

Large viewfinder
Viewfinder size
0.62x
Weather sealed
Weather sealed
Shoot in extreme weather
Great viewfinder
Viewfinder
Pentaprism
Great battery life
Battery life
1050 shots
 

Reasons to buy the Nikon D3100

Size
Really small
Prosumer size (124×97×74 mm)
Weight
Light-weight
505 g
Startup delay
Almost no delay when powering up
400 ms startup delay
Movie continuous focus
Movie continuous focus
Makes it easy to get in-focus movies

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 D7100

Nikon D7100

Entry-level DSLR

$711 body only

$1,097 with 18-55mm lens

Screen resolution Much higher resolution screen
Movie format Lower frame rate movies
Battery life Slightly shorter battery life
Nikon D7200

Nikon D7200

Entry-level DSLR

$705 - $997 body only

$1,297 - $1,347 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
Canon EOS 7D

Canon EOS 7D

Pro DSLR

$1,099 body only

$1,195 with 18-135mm lens

Continuous shooting Shoots significantly faster
Movie format Lower frame rate movies
Focus points Significantly fewer focus points

Nikon D3100 Competitors

Placeholder

Sony Alpha a7R III

Mirrorless interchangeable-lens

$2,998 - $3,298 body only

$3,400 with 28-70mm lens

Screen resolution Much higher resolution screen
Focus points Many more focus points
Viewfinder Has a digital viewfinder
Nikon D3200

Nikon D3200

Entry-level DSLR

$399 with 18-55mm lens

Screen resolution Much higher resolution screen
True resolution Much higher true resolution
Thickness Thicker
Canon Rebel T3

Canon Rebel T3

Entry-level DSLR

$637 body only

$487 with 18-55mm lens

Viewfinder size Larger viewfinder
Battery life Longer battery life
Movie format Lower resolution movies

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......