Jay

How is the low light autofocusing?

I am very much a beginner in this whole lens thing and one of my lens is a Sigma. Realise that this is a Nikon site, but how do Sigma lens stand up to against Nikon lens?

How about buying second hand lens, is this advised and how do you know whether the lens is ok, what are the traps to avoid?

Sigma is pushing the limits and are showing to have better quality glass then Nikon and Canon now at much lower prices.   This is shown in there new line of Art lenses in particular.  They are fantastic value.

The 18-35mm is razor from all the reviews I've read.  Definitely the better choice if you are doing walk around street and landscape everyday shooting.  The 50 and 85 are very much focused on portraits and head shots.  If price is an issue I'd get the 18-35mm plus a $200 Nikon 50mm 1.8g, its an amazing lense to.

They definitely don't make em like they used to.  Great shots!

Check this vid out http://www.youtube.c...h?v=c5XKl2i_9Hk

Don't get the 50/1.8D.  I have one for my D600, and I love it, but there's no point in having it if it won't AF.  You could buy a manual focus lens if you want to.  It should save you even more money.  For the D3200, however, I would stick with the G lens.  I don't think the D3200 supports a lot of the metering modes for legacy lenses.  

The 50mm 1.8G is definitely the way to go.  AF and sharp as a knife photos with nice bokeh.  But as stated by others the 35mm 1.8g is definitely a better all round shooting lense.   Striclty portraits the 50mm is a no brainer.

D7100 is all the rave.  It's such a capable camera and can compete with full frames as far as features.  The major difference is the smaller crop sensor.  Other then that its the bomb camera.

It looks like the focus was a touch off in the first shot.  It would be nicer to see more of the butterfly in focus by increasing the aperture a touch.   I find people overdo wide open apertures when a smaller aperture can get everything sharper and still have some nice depth of field.

Maybe experiement with a light behind the glass or shooting to the side.  Definately need that glass and the splash to stand out more.