K&F lenses are a great addition to your existing lenses.These lenses basically screw onto one of your existing lenses. That is why the size is very important. Look at the lens you want to put them on and find the circle icon with the line through it. Mine is 58mm. That is how big the lens diameter is and you need to order the correct K&F lens by that size.Now that we are past figuring out what size you need, this is a super fun lens. I screwed this lens with the macro extender onto my existing Canon kit lens and I had a pretty cool fisheye lens. Fisheye lenses is where the corners and sides of the lens looks skewed and circular. In the photo I'm including you can see my subject (my living room) in a circle with black around the edge. That is what occurs if you zoom all the way back with the fisheye lens. You can zoom in more to still give it a great fisheye look but without the black edge (see photos). It was fun to see exactly how a fisheye lens would look with my living room photo and how the walls and ceiling looked.The macro lens is super cool. It's the small lens you see in the photo and you screw it on top of your existing lens. I setup my camera on a tripod and opened the aperture to 22 and it showed a 5-8 second exposure. The results are shown below. I took water and misted the roses to give it the dewy look. The closeup/macro look from the roses are exactly what I would expect from a closeup lens. This worked great on top of my canon kit lens.To store the lenses just screw both pieces together and you can store them in a nice little black pouch that is included. It comes with lens covers to protect the lenses as well.Photos - Photos of my living room are with the fisheye zoomed all the way out, and then with the fisheye centered nicely. Photos of roses are with the macro lens and my kit lens.I'd highly recommend K&F filters and lenses. I've been very happy with them (hopefully my photos speak for themselves on the quality!)Disclaimer: I received a sample of this product in exchange for a detailed and honest review. My ratings are honest and I rate according to how the product performs (as you can see by my past ratings).