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

Nikon D90

71

Winner

Nikon D90

"Fast Autofocus with useful control options"
dpreview.com | talking about the D90's auto-focus
"High sensitivity performance up there with the best we've seen."
dpreview.com | talking about the D90's iso-noise

Reasons to buy the Nikon D90

Dynamic range
Wide dynamic range
12.5 EV
Screen resolution
High resolution screen
920k dots
Viewfinder size
Large viewfinder
0.63x
Startup delay
Almost no delay when powering up
300 ms startup delay
Sensor size
Large sensor
APS-C 23.6x15.8mm
Viewfinder
Great viewfinder
Pentaprism
Nikon D3100

54

Runner-up

Nikon D3100

"The D3100 offers little to complain about in terms of image quality, and its new 14Mp sensor delivers very good results."
dpreview.com | talking about the D3100's image-quality
"High ISO performance is substantially improved over the D3000, to the extent that images shot at sensitivities as high as 3200 are eminently useable"
dpreview.com | talking about the D3100's iso-noise

Reasons to buy the Nikon D3100

Movie continuous focus
Movie continuous focus
Makes it easy to get in-focus movies
Badge
Autofocuses shooting video
Contrast detection
Size
Really small
Prosumer size 124x96x73 mm
Weight
Light-weight
505 g

differences

Advantages of the Nikon D3100

Movie format Higher resolution movies 1080p @ 24fps vs 720p @ 24fps
Help
Shoots higher resolution Full HD (1080p) video
Autofocus Video autofocus Contrast detection vs None
Help
Automatically focuses shooting video
True resolution Higher true resolution 14.2 MP vs 12.2 MP
Help
Capture around 20% more detail in your photos
Size Smaller 124x96x73 mm vs 132x103x77 mm
Help
Around 20% smaller
Weight Significantly lighter 505 g vs 703 g
Help
Around 30% lighter
Light sensitivity (boost) Better boost ISO 12,800 ISO vs 6,400 ISO
Help
The D3100's boost ISO is 1 f-stop better
Thickness Thinner 2.9" vs 3"
Help
Almost the same
Lowest price Slightly cheaper $499.99 vs $869.00
Help
The best price we've seen is $369 cheaper (more than 40% less)
Nikon D3100 Learn more about
the Nikon D3100

Advantages of the Nikon D90

Dynamic range More dynamic range 12.5 EV vs 11.3 EV
Help
1.2 f-stops more dynamic range
Screen resolution Significantly higher resolution screen 920k dots vs 230k dots
Help
4x higher resolution screen
Viewfinder size Much larger viewfinder 0.63x vs 0.51x
Help
More than 50% larger viewfinder
Overall image quality Better image quality 73.0 vs 67.0
Help
Around 10% better image quality
Low light performance Slightly lower noise at high ISO 977 ISO vs 919 ISO
Help
The D90 has a slight edge (0.1 f-stops) in low noise, high ISO performance
Battery life Significantly longer battery life 850 shots vs 550 shots
Help
More than 50% more shots per battery charge
Shutter lag Less shutter lag 208 ms vs 279 ms
Help
Around 30% less delay when taking photos
Viewfinder Has a pentaprism viewfinder Pentaprism vs Pentamirror
Help
Pentaprism viewfinders are typically brighter
Continuous shooting Shoots faster 4.5 fps vs 3 fps
Help
50% faster continuous shooting
Lens focus motor Has a built-in focus motor Yes vs No
Help
Autofocuses with all autofocus lenses
Sensor size Larger sensor APS-C 23.6x15.8mm vs APS-C 23.1x15.4mm
Help
Almost the same
Color depth Better color depth 22.7 bits vs 22.5 bits
Help
Distinguishes 0.2 more bits of color
Startup delay Less startup delay 300 ms vs 400 ms
Help
Around 30% less delay when turning on
Viewfinder coverage Better viewfinder coverage 96% vs 95%
Help
Almost the same
Nikon D90 Learn more about
the Nikon D90
vs

recommendations

Relative to the best recent entry-level DSLRs, and ignoring price

Nikon D3100 Nikon D3100
54 vs 71
Explain scores
Nikon D90 Nikon D90
Green arrow Snapsort recommends the Nikon D90.

performance Which camera has better performance? Cast your vote!

NikonD3100
Nikon D3100 vs Nikon D90
NikonD90
Uses Travel score Travel
On holiday or vacation
331
194
Vote Vote
Sports score Sports
Fast action, sometimes indoors
211
261
Vote Vote
Features Color accuracy Color accuracy
White balance in varied lighting
219
255
Vote Vote
Autofocus peformance Still image focusing
Speed and accuracy
245
219
Vote Vote
Autofocus performance Video focusing
Speed and accuracy
347
120
Vote Vote
Manual controls Manual settings
How quickly and easily you can change settings
211
261
Vote Vote
Build quality Build quality
Is it sturdy, well made, plastic or metal
212
273
Vote Vote
Green arrow Join in the discussion below!

similarities

Compared to recent entry-level DSLRs

Common Strengths Common Weaknesses
Low light performance Relatively low noise at high ISO Help
D3100:919 ISO
D90:977 ISO
Lens availability Many lenses available Help
169 lenses
Screen size Larger than average screens Help
3.0"
Supports 24p 24p support Help
For that film look
Startup delay Minimal startup delay Help
D3100:400 ms
D90:300 ms
Fastest shutter speed Slow max shutter speed Help
1/4000 of a second
Storage slots Fewer storage slots Help
1
External mic jack Neither has an external mic jack Help
Limited to the in-camera mic
Light sensitivity Poor maximum light sensitivity Help
3,200 ISO
HDR Neither has in-camera HDR Help
You could do HDR manually
Screen flips out No flip-out screens Help
Less flexible
Image stabilization No image stabilization Help
Risk of blur
Cross type focus points Few cross-type focus points Help
1
Panorama Neither camera stitches together panoramas Help
You could stitch photos in post
3D Neither camera can take 3D photos Help
No 3d support

dxomark

DXOMark

competitors

Shared Competitors

Advantages

Disadvantages

Nikon D5100

Nikon D5100

Entry-level DSLR

$650 - $749 body only

$600 - $750 with 18-55mm lens

Low light performance Is slightly less noisy at high ISO
Overall image quality Has slightly better image quality
Thickness Is thicker
Weight Is slightly heavier
Canon EOS Rebel T2i

Canon Rebel T2i

Entry-level DSLR

$499 - $949 body only

$579 - $867 with 18-55mm lens

True resolution Takes significantly higher resolution photos
Light sensitivity Slightly higher maximum light sensitivity
Sensor size Has a marginally smaller sensor
Shutter lag Has slightly more shutter lag
Canon Rebel T3

Canon Rebel T3

Entry-level DSLR

$379 body only

$460 - $550 with 18-55mm lens

Light sensitivity Slightly higher maximum light sensitivity
Thickness Is thicker
Sensor cleaning Lacks a self cleaning sensor
Nikon D7000

Nikon D7000

Entry-level DSLR

$1,097 body only

$1,227 with 55-200mm lens

Low light performance Is slightly less noisy at high ISO
Overall image quality Has slightly better image quality
Weight Is much heavier
Size Is slightly larger
Canon Rebel T3i

Canon Rebel T3i

Entry-level DSLR

$609 - $800 body only

$709 - $1,180 with 18-55mm lens

True resolution Takes significantly higher resolution photos
Light sensitivity Slightly higher maximum light sensitivity
Thickness Is thicker
Weight Is slightly heavier
Canon EOS 60D

Canon EOS 60D

Pro DSLR

$899 - $1,304 body only

$1,138 - $1,342 with 18-135mm lens

True resolution Takes significantly higher resolution photos
Light sensitivity Slightly higher maximum light sensitivity
Thickness Is thicker
Weight Is much heavier
Nikon D5000

Nikon D5000

Entry-level DSLR

$997 with 18-55mm lens

Screen flips out Has a screen which flips out
Thickness Is thicker
Weight Is slightly heavier

Nikon D3100 Competitors

Advantages

Disadvantages

No significant competitors found that are specific to the Nikon D3100.

Nikon D90 Competitors

Advantages

Disadvantages

Nikon D300S

Nikon D300S

Pro DSLR

$1,700 body only

$2,547 - $4,295 with 18-200mm lens

Focus points Many more focus points
Cross type focus points Many more cross-type focus points
Low light performance More noise at high ISO
Overall image quality Worse image quality

appearance

Nikon D3100 Nikon D90
Nikon D3100 Nikon D90
Nikon D3100 Nikon D90

Find similar cameras

discussion Which do you think is better?

Speech is free, but discussion at Snapsort is moderated! Please discuss your opinion of these cameras here, and discuss feedback for Snapsort at our support community.

Showing 25 comments

NTIL (0:46 PM, October 18, 2011)
That may be all good and well, to save money if you do not intend to shoot in the magnification ranges of the kit lenses.  Nikon lenses are definitely a cut above the budget off brand lenses out there, so I would not say buy a cheep off brand lens instead of the nikon lenses normally available in the kit.  Also, in the evaluation of the D3100 it said there was no image stabilization.  This is true, if the VR switch is turned off on the lense.  If VR is turned on, (vibration reduction) it stabilizes the image for shakey old folks like me.  For half the price of a D-90, with virtually all the features, AND image stabilazion, AND autofocus video, the D-3100 is a superior camera for most hobby enthusiasts.  IF you are a professional, and need to advertise that you have the latest and greatest, buy the D-90 for the marginal improvement in picture quality.  Most people cannot see the difference in the image, though, and the higher MP of the D-3100 still blows up to a larger print at higher quality! 
 
Avatar for Frankie Frankie (9:40 PM, September 15, 2011)
i want one but i dunno what its like ( d90 ) would you recommend ...
 
Chris L (3:24 PM, July 18, 2011)
Can anyone help me get my head around this? I was given some money for my first dSLR to see if it's a hobby I enjoy. The D3100 has "Higher true resolution", but the D90 has "Better image quality". I do not think megapixels mean what I think they do. If the only thing I care about is picture quality (I don't understanding using a dSLR as a video recorder, but that's me), do I ignore the megapixels of the D3100 and buy the D90? Have megapixels became a camera marketing ploy like refresh rates on HDTVs?
 
Irrelevant (11:10 PM, July 12, 2011)
A pointless comparison IMO. The D3100 is a modern camera for budget-limited enthusiasts, not for professionals that make their living shooting pictures on the go. I just happen to own one and I don't know what everybody's problem with this camera is. I've been comparing images from many other dslr's and as long as you keep a good aperture like 8 at the smallest with the kit 18-55 lens, you get brilliantly clean and sharp pictures up to ISO 800 that aren't lacking anything compared to competition plus you still get decent DOF. If people don't like limited DOF, they should get a compact. You'd really have to be a perfectionist pixel-peeker to find anything wrong with d3100 images. They look as natural as any pro camera pictures. Also compared to Canon's massive purple fringing with kit lenses the d3100 is clearly on the winning side at a lower cost. And what's that with the ISO noise? Even at 3200 the detail is perfectly acceptable and completely unnoticeable on a 6"x4" photo printout. Not to mention that Photoshop can make your pictures printable at 6"x4" throughout the ISO range except maybe 12800, which is admittedly a gimmick.

That aside, what more functionality would you expect from an entry level dslr? If you're serious about HDR pictures, you're using a tripod. How hard is it to change the exposure then? It takes like 3 button clicks or 5 seconds.

Yes, d3100 has some unexpected functionality limitations (all are firmware based, so a fix is possible, although improbable), but that's just normal considering Nikon are in the business of selling cameras and other optics. They wouldn't want to put out the perfect camera, because nobody would want to ever upgrade. So to anybody out there reading this, if you're not planning to become a pro paparazzo, and you are on a budget, this camera will do you just fine and better. There's nothing wrong with the video either. How many people are shooting videos of vertically geometrical objects while slowly moving from side to side? I don't know, but I surely aren't one of them, so I'm not seeing any jello effect. And honestly, if you want to shoot decent videos, buy a camcorder and you won't have to complain about the AF noise picked up by the built-in mic either. What's this sudden hype abou dslr's shooting videos anyway?
 
Robson de Souza (4:24 AM, July 09, 2011)
Tenho uma d3100 não me arrependo pois cada uma tem suas vantagens e desvantagens, pretendo comprar uma d 90 mas não vou despensar a d3100 afinal nem tudo que reluz é ouro. ou seja amba são exelentes cameras e a câmera não faz o fotografo as máquinas podem ser boas, mas o que faz a foto boa ou ruim é o fotográfo.
 
Alex (7:07 AM, June 01, 2011)
I had D3100 but upgraded to D90 shortly, primarily for autofocus motor & higher resolution screen. The motor is very useful for moving subjects like babies, kids & animals using fast affordable primes
 
geek (5:12 PM, April 15, 2011)
AF-S lenses has build in motor for autofocus while AF-D lenses has no motor. D90 has motor which can auto focos AF-D lenses as well which can be big savings as AF-S lense are more expensive (Heavy) then AF-D lenses.

If you take D3100 you can use AF-D lenses but only with manual focous

Nikon has very small number of AF-S lenses.
 
geek (1:59 PM, April 15, 2011)
I think the comparison Reasons needs to be changed from "Image Sensor size" to "Pixel Density" which is more accurate.

Pixel Density = portion of image sensor is available per pixel

In D3100 image sensor is a bit smaller (23.1x15.4mm = 355.74) and storing 2MP more.
So Pixel Density (355.74 / 14.4MP = 0.025052)
While in D90 image sensor is a bit larger (23.6x15.8mm = 372.88) and storing 2MP less.
So Pixel Density (372.88 / 12.2MP = 0.030564)

Pixel Density is 22 % more on D90 which allows it to work with almost 22% less light than D3100 which is very big advantage but just the image sensor size comparison hides this fact as it seems almost same

Even if D3100 would have same image sensor size still it would be at disadvantage on its side
 
Avatar for Snapsort Snapsort (2:35 AM, April 13, 2011)
The AF-D lenses are older design lenses, generally AF-S lenses are better. But, there are some incredible AF-D lenses, which are often inexpensive compared to other lenses. For example, the Nikon 50mm f/1.4D, 50mm f/1.8D, 85mm f/1.8D and 85mm f/1.4D are all amazing, very sharp, shallow depth of field etc. Btw, have you seen our sister site http://lenshero.com, you can explore Nikon D90 lenses for example.

If you're serious about photography, and plan to buy several lenses, and keep your body for a while, I'd recommend the D90. The D90 also has more features and more controls available on the body, giving you more room to grow.
 
NevelN (2:05 AM, April 13, 2011)
Which would be a better investment though (D3100 vs D90) for a first time DSLR user? For me, I'm wondering about the AF motor in the D90. Are the lenses that require an AF motor (such as AF-D) better or similar to AF-S lenses by Nikon? I'm considering this since I don't want to buy another body in the next few years, and would rather save up on a variety of lenses.
 
Avatar for Snapsort Snapsort (2:16 PM, March 29, 2011)
Hi Jai, yes, the D3100 replaces the D3000, you can see that on our page about the Nikon D3000. Yes the D90 is still an awesome camera, but the D7000 is even better, see our comparison of the Nikon D7000 vs D90.
 
Jai (7:56 AM, March 29, 2011)
D3100 replaces D3000 not D90. D90 is still superb photography aside. even though it was released 4 years ago it still matches the photographers itch and a very good pro level cam.

on the other hand D7000 replaces D90 which definitely will beat D90. Agree?
 
Tingchuy, Wilson (5:10 AM, March 14, 2011)
hi everyone! i have d3100 and it is 3 months old already and i'm planing to buy a new d90. Do you it's worth it to sell my d3100 and buy a d90?
 
Avatar for Snapsort Snapsort (10:57 PM, March 01, 2011)
If you are looking for a lens then you can check out our sister site LensHero.com, you should be able to find some great lenses that work with both the D90 or the D3100.

I own the D90 and love it! The D3100 and it is also a great camera, the biggest difference is that the D3100 doesn’t have a focus motor. This means you will need to spend more on lenses, because you will have to buy lenses with a motor built in if you would like to have your camera autofocus.
 
Piyush_bond007 (6:42 PM, March 01, 2011)
hi...i am a beginner...i don't know which lens will be more appropriate for me .Can you tell me which DSLR will be sufficient for me whether d3100 or d90.And suppose if i take d3100 , is there any scope for making a better camera?
 
Pras (5:10 AM, February 13, 2011)
Buying the 3100 with 55-300 mm lens makes more sesnse than the D90 for an amateur.
 
Avatar for Snapsort Snapsort (11:24 PM, February 09, 2011)
Hi April, check out the comparison above, it shows the Nikon D90 has a slight edge in image quality over the D3100. The D3100 is a lot cheaper though, and its just about as good (I doubt you'd notice any difference).
 
April (6:54 PM, February 09, 2011)
My bad it has the new sensor. I'm not sure if thats the same as a processor ( I guess I'm thinking computer hear) Like I said I'm a newbie.
 
April (6:41 PM, February 09, 2011)
I'm getting the Nikon D 3100. Its in my price range and I have heard that the upgraded prosseser is better and will make better quality pictures then the D 90. I'm a newbie so mabey I don't know what I'm talking about. It's my first DLSR. So I think the Nikon D 3100 would be the best camera to learn on. Hopefully once I get the hang of using a DLSR I will be able to up grade in a few years.
 
Avatar for Snapsort Snapsort (6:18 PM, February 08, 2011)
Hi Clag77, I think many people just use the kit lens. The kit lenses are good all-round lenses. If you know which lenses you want, then I'd suggest skipping the kit lens to save $.
 
Clag77 (5:53 PM, February 08, 2011)
Me again...newbie :). There are offers here in south africa where you buy the camera and there are lenses in the set. Is it better to buy the camera on its own and go for a certain lens seperately? As i say i am a beginner, wouldnt know if the lenses in the set are up to standard.
 
Clag77 (5:48 PM, February 08, 2011)
Hi alex.. i;m new here and would like to find out. As a beginner would u recommend the Nikon d3100 or d90. Which lens would you suggest to the camera of choice? You see, i would like to have one good buy from start off,then move on from there. Any advice would be greatly appreciated
 
Androsce (7:58 PM, February 05, 2011)
fisrt of all i decide to upgrade my gear! i was shooting with canon 350d Rebel xt ! and i made up my mind for the new nikon d3100 and when i get it at the first time i wass happy but when i saw that lacks the options that the 350d has i was starting to disapoint because the 350 d for such an old model was at the higher category rather then d 3100! Dissadvantiges of the D3100 it lacks bracketing,i shoot HDR :) has no built in focus motor,the crop factor is 1.6,bad ergonomics,slo0w shutterspeed,it`s low end category the image quality i think ther is not any big differnece its simmilar to the d90! but the d90 offers many options rather the d3100! there is no battery grip for the d3100! there is no infrared! im much happier with the d90 :)
 
Avatar for Snapsort Snapsort (11:04 PM, February 02, 2011)
Glad to hear you're happy with the D90, we'd love to hear what specifically disappointed you about the D3100 and what you like about the D90!
 
Androsce (11:02 PM, February 02, 2011)
D3100 cant beat the d90 in no way i bought d3100 and i was disapointed with it...i sold it and now i am proud owner of the d90