Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: does it work in auto? & does it screw on the front of another lense?
Document: over all this is a good concept for a fisheye lense, get awsome macro shots! But my only regret is that it will not fit my 52mm nikon lense. Not even with the adapter rings. Not a big loss thought I have three other lenses it will fit on, two of them are for my 35mm camera so I lose auto focus if I use them with my D60.
But if you are expecting low distortion, you'll need another $1000.
just got it...well manufactured. solid. satisfactory. it works as designed. using on nikon 50mm lense and it functions as supposed.
So it does fit directly on my lense with AF. This is a fun product, and great for macros. I realy do love using it whenever I can.
again would never buy another one of their lens, it didn't come with a t-mount for nikon camera but you get what you pay for and I didn't get very much with these Opteka lens
Great product, great price. I was very happy with my purchase. I am a newbie at photography and just started classes and this has been a fun lens to work with!
This filter is not what I expected but okay to photograph for personal work. I do not recommend it if you need final photos of high quality. It's just a fun accessory.
Until I want to splurge and spent $1,000+ on a real fisheye, this is just fine. Have to do some post work editing, but it's certainly wide, while giving you the fisheye look!
im no professional photographer but i enjoy arty shots. this fisheye is perfect. it screws right onto the current lense of my nikon d40. there is obvious blurring around the edges but it doesnt bother me. overall a great purchase. the images given with the description of this item are exactly how the picutre looks
I want everyone to be clear about what I'm reviewing. This is not a lens. It's a fisheye adapter that screws onto the lens like any other filter. And it doesn't only work on a Nikon. I use a canon.The adapter comes with 3 step up adapter rings.
Answer: It screws on to the front of your lens. There are adapters for different lens diameter sizes.Yes it does work in auto - both auto focus and auto shooting mode.