Which lens is better? - 2

I'm an amateur photographer and I was just wondering which lens would be best for me to get I have a Nikon D5000 Dslr camera and the only lens I have is the one it came with, I'm looking to get a crisper photo and a little bokeh my favorite things to shoot is people, and portraits. I just need advice on which is best for what i'm gonna use it for thanks! Here are the two lens i'm looking at

Sigma 105mm F2.8 EX DG Macro

Nikon AF-S Nikkor 50mm f/1.8G

Nikon AF-S Nikkor 50mm f/1.8G

There's no way to know but to visit a proper camera shop and view the out of focus area behind the subject.

The way the out of focus area is rendered has all to do with the lens design and just because a lens is "fast" does not mean that it will produce pleasant "Bokeh"

Here is a link that shows that.

http://www.kenrockwell.com/...arison.htm

The lens I have that produces the most amazing "Bokeh" is an old Nikkor AI converted 105 mm f/2.5 lens. I use it on my Nikon F4 and D3 when shooting head and shoulder shots of models

You kit lens already covers the 50mm range, although not with as wide an aperture. The Sigma will give give you the equivalent of 152.5mm which is a long portrait lens. The 2.8 will provide great bokeh and as a bonus, it's a macro, which will allow for very tight crops like lips or eyes.

The sigma will allow you to get really far away from your subjects as it can be used as a regular prime lens. Or really close since it can do macro. But you should know that macro lenses when used for macro photography will mean you have to learn a whole new set of skills. Macro photography is something that needs allot of patience and allot of knowledge about depth of field, natural lighting, the use of a speed light and a steady hand. But its not a good lens for allot of reasons. With a prime lens at 105mm you will need allot of room to work with. Also Sigma lenses don't really produce nice Boken. There not as smooth as Nikon's lenses. Sigma lenses tend to loose details if your one to crop or blowup pictures.

The 50mm on the other hand is a great fast lens for almost everyday use. Its still a bit on the telephoto end since its being mounted to a DX camera. So it would actually be closer to a 75mm lens and the sigma 105mm macro will turn out to be a 125mm lens. I have the 50mm 1.8g and love it. Its the sharpest lens I own. But to be honest I'd go with the 35mm 1.8g ( I have both the 35mm 1.8g and 50mm 1.8g).It can be a true walk around lens. Its almost as sharp as the 50mm but it has the advantage of having broader coverage. On a DX camera the 35mm is a 53mm so its in the sweet spot of 50mm.