What are some pros and cons of each? I use a Nikon D600 and am looking for my 50mm. I shoot a lot of video, so a smooth manual control is important to me. Besides that, I am unsure of what exactly I want. Are there any significant performance differences? Any differences in the way you would use them? Weight? Thanks so much!
From everything I've read about these two lenses, 1.8D may be all you need on a D600. The G has more distortion, but also rounder blades which give it smoother bokeh. So it may depend on the kind of shooting you do.
The biggest upgrade with the G is that it's compatible with D3000 & 5000 series DX cameras, but that won't matter to you with your D600.
I have the G and love it, but I also have a D5100 and needed the G for compatibility. You can use either, so it's a win-win for you. If I had a D600 I'd go with the 1.4G myself, but that's not what you asked. :)