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

Input:
Question: Does this lens have the focus confirm chip?
Document: So far it hasn't caused any problems or noticeable damage but it isn't the most pleasing feeling when handling expensive equipment.Price: 5I simply cannot believe this lens exists on the market for the asking price. If Canon or Nikon had made this lens it would likely cost two to three times more.I own this lens in Nikon mount, with the chip that allows the camera to control the exposure and aperture like a G series lens.
Not easy to focus (since it is not an auto-focus lens) in the dark, as I purchased it with the intention of doing astrophotography with it.
I really like this lens on my Nikon D5200. I worked really well although I paid more time on this full manual focus lens. I returned it because I wanted Rokinon 85mm instead. I have to say both these lenses are wonderful : sharpness, clarity and built quality.
I 'm a novice photographer. Shooting on full auto is comfortable, but you really need to venture over to the manual mode to learn.This  is a high-quality and very capable wide-angle lens. The Nikon version is semi-automatic - you always have to manually focus, but in the Auto mode, the camera will still control  the other exposure settings.
It requires quite a long throw allowing very fine tuning of focus. It is very enjoyable to use. The front and rear lens caps are both flimsy and can come off easily. I'd recommend replacing them if you can. The lens hood is good, though does not lock into place quite as firmly as my other lenses. The final reason I cannot give 5 stars is an issue I have when installing the lens.
Buyers should know this is a full manual, which I have no problem with since I shoot full manual 99% of the time now. However, it could be a surprise to the buyer who is not used to manual focus and aperture settings. You cannon connect this to your canon body and change the settings on the camera. Only on the lens.That being said. I love the images this lens is getting. F2.0 in low light or night time photography are awesome.
Well, first of all this lens is huge.. I use mine on my Fuji Xpro1, manual focus and f-stop but I use my lenses in manual anyway.. A fast ultra wide lens at this price couldn't be SHARP too could it? Yes, it sure could... Focus is smooth and it gets close, the lens shade is a little dumpy... It gets an extra star for the very low price, love it in all it's huge glory...
Landscape and astrophotographers will love this lens on APS-C, giving a roughly 24mm equivalent field of view with the ability to get sharp pictures from f/2 to f/11. Like most lenses today, f/16 will show the effects of diffraction but images are still good. I would not go beyond f/16 and if you need more depth of field I would consider focus stacking.
I bought this lens to replace the disappointing SEL16F28 Sony 16mm lens for my Sony A6000. This lens is manual focus (you should manually focus landscape shots anyway). The NEX cameras and A7's have focus peaking, so manual focus is easy and accurate.Wide angle lenses are prone to chromatic aberration (CA) because they bend the incoming light at such a sharp angle. I tried to induce CA with this lens.
I bought this to use for my Sony FS-100 video camera and it really works well. The other day, I picked up a Sony A7 and found that the image circle projects even more when using this on a FF camera. You cannot use it for FF by any means, however, you can get substantially wider by using the 16 f/2 and cropping after the fact. It is very sharp, has good manual focus.
Answer: The Nikon version does have the focus confirmation chip. I can't speak to the other versions.