Nikon D3300 vs D3200 vs D3100: 13 Dimensions
The D3200's body is fractionally larger than the D3100's by a millimetre or so in width and depth, while the Nikon D3300 body has shrunk slightly compared to the D3200's, but the differences are so small as to be insignificant. All three are very compact and will feel more or less the same in the hand.
The real difference is the new retractable 18-55mm lens supplied with the Nikon D3300. This dramatically reduces the overall size of the camera/lens combination, and this will make the Nikon D3300 feel quite different - in a good way!
Nikon D3300 vs D3200 vs D3100: 14 Weight
The D3100 and D3200 bodies weigh the same, but Nikon has introduced a new 'monocoque' construction technique, first in the Nikon D5300 and now in the Nikon D3300. This results in a useful weight saving, and the D3300 is 45g lighter than its predecessors.
This isn't much on its own, but when you factor in the new retracting lens, which brings its own weight saving of 70g, the difference increases to 115g - so you really will notice it.
Nikon D3300 vs D3200 vs D3100: 15 Price
As always with a brand new camera, the Nikon D3300 price tag is much higher than its predecessor's, particularly since the older camera will always be discounted by this stage.
There is a large price differential between the D3300 and the D3200 now, just as there was between the D3200 and the Nikon D3100 when the Nikon D3200 was launched. This gap will close, but perhaps not for a few months.
Nikon D3300 vs D3200 vs D3100: Sensor, Processor, Continuous shooting
Nikon D3300 vs D3200 vs D3100: ISO, Kit lens, Autofocus
Nikon D3300 vs D3200 vs D3100: Shooting modes, Movies, LCD
Nikon D3300 vs D3200 vs D3100: Memory, Wi-Fi, Battery
Nikon D3300 vs D3200 vs D3100: Dimensions, Weight, Price
Nikon D3300 vs D3200 vs D3100: Our conclusion
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