I am getting into low light photography and recently bought a nikon D600 and 50mm 1.4 lens.
Results in ample light are superb. Sharp and crisp. I am interested in understanding the term "low-light" better, as my results under what I believe is "Low-light" are not on par with my expectations based on images posted using my same setup. This also comes from the fact the 1.4 lens is marketed as "great for low light"
Let me define some ground:
To me low-light describes a situation where the subject is lit indirectly, from a far away or dim source (if not both). Example of this is shooting inside a bar at night with few dim sources of light, like TV's, bar signs etc. Or outside illuminated by candles/torches.
I shoot at 1.4, kept it at shutter speed of 60 as suggested here, and ISO as high as autoISO sets it to (3200-6400).
Results are rather blurry, even when autofocusing with AF assist illuminator, and images tend to be very dark under different metering settings.
I must say that after tuning autofocus (to a whooping -18), I am getting better results.
Anyhow, I think knowing what the definition of "low light" means to the community would greatly help.
Sample images, lux readings, light setups, camera settings, anything would greatly help!
( I have read all your comments as I edit my original post, and appreciate your feedback. In respect to that, I have edited my post to best respond to your comments, and better lead this thread. Thank you all for your support!)