Nikon D3100 F/1.8 suitable for video shooting indoor without no noise?

I have Nikon D3100 lens of F/3.5 and while shooting video indoor, noise on the video occur… I'm thinking of buying lens 50mm F/1.8 or F/1.4 for video shooting indoor. Will it help? Please let me know.

It will to some extent. A LED videolight will also help

Shooting video is all about supplying enough light to keep the ISO low, no matter how fast the lens may or may not be

Look at your lecture notes on lighting sets and how to use an incident light meter to assure proper exposures as well as good lighting ratios

This review will help you light so the scene "looks" like is was shot in low light, but without the noise

It will help to an extent, but I'm not sure if it is worth the price. At least if that's your only purpose for the F1.8 lens. Lighting is key for quality video, especially indoors. Now depending of what you are shooting this might not be an option for you. If this is the case, and you have extra money you might find the new lens to be what you are looking for, but I don't think it is the difference you are looking for.

"but I'm not sure if it is worth the price"

It sure is, the 50mm 1.8 is one cheap piece of glass!

Nikon 50mm f/1.8D is probably the sharpest lens that Nikon makes--see lens reviews/specs at www.photodo.com. I use this lens for low light situations outdoors and indoors so I don't need a flash.also, small dept-of-field. Using this at f/2.0 I will get at least four-six times as much light (which means four-six times faster shutter speed) as my zoom at around f/4.8 and also have a sharper image. For $99.00 this f/1.8 is a steal and a much better buy than the f/1.4 which is almost as sharp a lens and costs about $250.00--it's a no brainer.