Lens shape was different than my normal. But it's ...
936486
Lens shape was different than my normal.  But it's a very forgiving design.  You CAN wear more than your basic sunglassses.
1378456
They look awesome but when they came in, this little thing was twisted. I ignored it but then the next day it popped off. So I'm kinda upset about it. And then I noticed there was a drop on the lens, I thought maybe it was water. Nope can't get it off :// I'm really upset man
1956334
Extraordinary lens! I am amazed at the clarity of the photos. It is no my favorite lens, and I have more than a few.
1633389
These are great. It took a little getting used to because they are curved. It was kind of weird looking to the side of the lens. After a few times wearing them outside in the Florida sun, I am so glad I bought these.
642886
I really want to question the authenticity of this being a Holga lens. I used one on my Nikon D200 years ago, i just got another one and it feels, and shoots like a completely different lens. Perhaps my old one was a fake, but this lens feels cheaper, it fits loose on the camera, and the images aren't quite as "Holga" as my old lens. Maybe the QC isn't as good anymore, or the materials are cheaper, i don't know.
But with that being said, this is still a fun lens to use. It does require a good bit of light being an f/8, so don't expect it to be a good user lens if you're not out in the afternoon sun with it.
For the price, i really find it hard to take any of my own complaints seriously, i know it's a $20 lens. I am honestly very happy with my purchase despite being leery of it being a genuine Holga lens.

I don't like to leave any form of negative review, so after more time is spent shooting with this lens i will update my review.
4074301
Decent glasses but the shape is kind of weird and unlike normal aviators. Also, they aren't really mirrored like they appear.
3920682
Pretty neat set of lenses. I bumped the fisheye lens with my thumb while I was messing around with it and it's a little warped now, but it still looks interesting.
4743232
I have had this lens before, but it was not the VR model. Wow, what a difference. I sold the old one within a week of having it, but this one I am keeping until I can't use it anymore. Crisp and clear, decent focus speed.
2300907
The lens was a little thicker and/or slightly longer length which made it a little difficult to place in the frame. To ensure it wasn't a shortcoming on my part, I attempted to remove and replace the original lens several times without difficulty. Switching back to the replacement lens, it was again difficult to install. As long as you are careful, you should be able to fit the replacement lens into the frame and look as good as new.
3393722
it was close but not exact what I was looking for im combining driving lenses with spot to make up difference great long distance. just spot so its narrow lol
2106073
I put this on a 50mm lens hoping I would get a 20mm lens equivalent.  However, no matter how I focused everything was blurry.  This lens is also quite heavy which impeded the focusing mechanism.
2194399
I bought a used lens from Japan and didn't realize it until the lens arrived--my 55mm polarizer would not fit the lens.  So, I had to order one of these in for a few upcoming travel dates.  I was able to put it through its paces this past weekend and it works about the same as the smaller polarizer.  What I am not used to is that this polarizer actually has a threaded front to it (so, it is nice to be able to put the lens cap on it for a change), and the ring to turn the polarizer is smaller than I am used to.

Having used it extensively for three weeks, I have found a few flaws.  First, when you have a lens hood on the lens, it is very difficult to turn the polarizer.  My older polarizer was larger and protruded more from the front of the lens, so it was much easier to turn.  Second, it is rather tricky to get this polarizer tight on the lens.  It had a nearly fatal flaw, onto hard rock, when it spun off the front of the lens once while using it.  Thankfully it didn't break, but at a different angle it could have.  Finally, I found that compared to my older polarizer, the images through this one are not as good.  The images are slightly dulled and washed out, where my old circular polarizer actually made the images "pop" more.  There were many times when I would rotate the polarizer and it made little to no effect, whereas my old polarizer had a clearly visible effect in the same shooting location (using a different lens, since the old polarizer does not fit the new lens).  Sadly my original polarizer is no longer made.  And there is no issue with the new(er) lens--side by side, it takes images without the polarizer at the same quality level as my older lenses.

In short, this somewhat fulfilled my needs, but I would not recommend it.  Given the cost, the overall image quality is not that good.
3052945
Still had to make modifications (basically had to scrape edges with an exacto knife) in order for it to fit properly. I didn't have time to replace it since I had a trip and didn't want to travel with my camera without a lens cap. But had I had the time, I would have returned it.
3986704
These are not the same shape as the other NW5006 series. I purchased these when I broke my blk/pink frame and the lenses did not fit.
4898497
I've always wanted to try one of these clip on lenses but didn't want to commit to one that was like $60 from the get-go, so when I saw this deal on Slickdeals I was excited to try it! Now...I'm hesitant to buy a more expensive kind. It was very underwhelming for me, or maybe I just need to play with it more and be more familiar with each lens. The fish eye has a awkward black ring around it and it doesn't even look like a consistent black ring so it made my pictures look weird. The wide lens definitely made the scope of the camera wider but didn't make a considerable difference. I'll have to try it outdoors sometime. The macro I still have to figure out how to use. One of my biggest irks was that the macro and wide lens were incredibly hard to separate from each other and when I was finally able to separate the macro from the wide one, I couldn't take the whole lens off because the wide eye kept separating and leaving only the macro lens on there.
4614170
Lens arrived today. I wastep no-time and put it right away on my camera Nikon D7100. It did not wow me right away, it needed to be stepped down a bit to f2.8 or f4 in order get sharp photo. I was hoping that this might be better than 50mm f1.8G, but now I see that the previous is waaaay better and sharper even wide open.
2074660
I had read many of the reviews on Amazon and the Net before buying this lens.  While most of them were good, a small percentage mentioned that they had received lenses that were soft, or highly distorted, etc.  It appeared a small percentage were of poor or faulty construction.  I decided to take my chances, as this was an exceedingly good price for a wide angle lens.

When I got it, I put it on my Canon, and took a few test pictures of my wife.  Hmm, there was significant distortion, but that was a fact of life with Wide Angles.  I then took it with me on a trip to Colorado for three weeks for Business.  I took most of my pictures with my new wide angle, trying to get a feel for it.  Given that I am a highly amateur shooter, I did not review them until I had returned home and uploaded them on my desktop.  When I did I was shocked.  Almost all of my pictures were out of focus.  But not completely out of focus.  A small, circular area in the center was sharp.  Everything else around the edges was out of focus.  Horribly so.  The left side worse than the right.  I was landscapes with fairly consistent distances at small F-Stops, so depth of field was not the problem.

After examining the pictures, I returned the lens.  I think I will save up for a Canon 10-22 for my next foray into wide angle lenses.

The service was great, the lens was heavy and felt solid.  My only problem was the faulty optics, which, for a lens, is a pretty big problem!