Now I am not really a prime user, and prefer the versatility and flexibility my zooms offer me. That said when it comes to low light and being able to increase light coming in through the lens by more than a stop, then already primes show an advantage.
Primes generally are considered to be able to give a clearer images since there is no compromise between focus and adjusted zoom.

Nikon-35mm-DX-1.8-on-Full-Frame-1001

A photo of the Nikon 35mm DX 1.8 upright with Box

There is a running general opinion that you do not use DX ( cropped frame ) lenses on Full Frame (FX) bodies, I assume because the final image will possibly be so heavily distorted it will be useless. I am not quite sure what other reason there can be, other than the DX lens is not built with the FX body in mind.

Nikon-35mm-DX-1.8-on-Full-Frame-1006

Another photo of the Nikon 35mm DX 1.8 this time upside down and with a lens hood

Nikon-35mm-DX-1.8-on-Full-Frame-1004

A photo of the Nikon 35mm DX 1.8 upright

With that said What finally made me decide to buy the 35mm I cannot say, I will say at the price it was an easy buy. Since I am not a prime user at all I was reluctant to pick-up a lens I may never use, so the NIKON 35mm DX 1.8 make a perfect test lens, since it is cheap and a nice small lens.

Nikon-35mm-DX-1.8-on-Full-Frame-1005

Nikon 35mm DX 1.8 – Top view of the 7 blades

My quick overview of the Nikon 35mm 1.8 DX lens. This lens is a lightweight at only 200grams and 52.5mm long and a whopping 72mm with the lens hood on. It is quite impressive that within 52.5mm there are 8 lenses in 6 groups, and it is a 7 bladed diaphragm. Just a little thought, your new age mobile phone only weighs in at a few grams less than this lens.

Nikon-35mm-DX-1.8-on-Full-Frame-1011

35mm DX 1.8 photo of a flower

Nikon-35mm-DX-1.8-on-Full-Frame-1012

35mm DX 1.8 photo of same flower now really closeup

Now down to the important bit, how does it like being on a Full Frame body. First of all it works! Secondly ( for what it is ) it works very well ! Well mostly. Since I am primarily a Wedding photographer, I have a certain set of expectations from my lens, that being a robust and reliable lens that can produce a clean image.
Having played with this lens for about 3 months now I have a fair idea of what to expect from this lens and where its limitations lie in relation to my Full Frame Body.
Lets start with quality of lens build, in short it is what I expect from a Nikon lens, well built and solid. There is a lot built into this 200gram lens and somewhere in all that they made sure it stayed together as it should.
Now a few little hiccups I have encountered which I am not sure falls into reliability or image quality, it probably is a bit of both. I seem unable to get the 35mm DX to fine tune it on the FX body, and while this is fairly minor in this case, a little fine tuning would be good. So knowing that I need to make a tiny adjustment for the lens everytime I do a shot with a small Depth of Field, all is well.
I find I use the focus ring on occasion and while it is small it is quite easy to work with, so again all is good.

Nikon-35mm-DX-1.8-on-Full-Frame-2222

35mm DX 1.8 comparison images … at F1.8 / F4.0 / F8.0 / F16

Nikon-35mm-DX-1.8-on-Full-Frame-1023

Close-up of that green fuzzy stuff

Nikon-35mm-DX-1.8-on-Full-Frame-1010

The Vignetting at its worst F22 / ISO 800 / 1/200s

Nikon-35mm-DX-1.8-on-Full-Frame-1007

The Vignetting is only slightly obvious in this photo – F4 / ISO 200 / 1/400s

Now down to the main part, the images and how do images come out on the other end. There is always a certain amount of vignetting and on occasion I can simply crop it out, while there are occasions when I simply have to leave it in, this has meant that I now shoot generally aim to shoot for the centre and adjust the image accordingly in post production, so I do not get caught with to much vignetting. This means it can be significant enough that I am aware of it and while I shoot a wedding I know that and work with it, it can also from the start create a wonderful mood to an image, so it can be a real win. I tend to photography Weddings as they happen, a very candid and over the shoulder manner, this means that when I have that slight vignetting it can really be adding to the photo and creating a bit more depth that I may have had to consider adding in post production. I have used this lens now at a number of weddings, with off camera flash to bright sunny days

2014-08-01 - Kevin and Peter-1149

Same Sex Wedding and using the Nikon 35mm DX 1.8

2014-08-01 - Kevin and Peter-1148

Using the Nikon 35mm DX 1.8 you can see a slight bit of vignetting

The great thing is it is also a very nice little lens to use as a run around, it really ensure that my camera has a small footprint and since I do not have to worry about a huge heavy lens it makes it so much easier to carry around and pull out for a few quick photos.
How bad is the vignetting you may want to know, and the best way is with the images you see