I want to buy a DSLR - either a Nikon D3200 or D5100. But I'm confused which is the best option for me. I mostly take pictures of birds, landscapes, abstract & portraits. Would appreciate any advice.
closed as unclear what you're asking by mattdm, MikeW♦, AJ Henderson♦, Dan Wolfgang, Esa Paulasto Feb 16 '14 at 14:09
Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
It's easier to make a larger pixel more sensitive than a small one, so there's a somewhat of a correlation between larger sensors and greater sensitivity, which sometimes translates into greater dynamic range. But not always, and there's also benefits to having more pixels as well. In other words, in some ways bigger pixels is better, in other ways more pixels is better.
DXOMark ranks the D3200 sensor slightly ahead of the D5100, 81 vs. 80. Note the Nikon D3, top of the line 5 years ago, gets an 81. So the D3 has pixels much bigger than the D3200 but their sensors get the same ranking in DXO's system. Also note all Nikon's modern SLR sensors are extremely good.
So don't worry about the sensor, they're all very good. If you're comparing D3200 vs. D5100, the D5100 has the tilt-able screen and more autofocus points, but they both have to great sensors.