Review on YONGNUO YN2 0X III Teleconverter Extender by Bobby Aghetoni

So if you've got a lens that makes distant objects appear big, this handy little device brings them even closer. Good Good. Seriously, I've been a fan of Yongnuo products since I first used their flashes and then added them to my arsenal. At last count I have 5 triggers, 1 controller and 6 flashes (different models). Out of all these devices, only 2 flashes failed and that's because I dropped them. I can hardly blame the company for not being able to drop proof their flashes 10 feet onto concrete. While other teleconverter brands have some really good reviews (far more errors than hits), I've felt pretty comfortable working with Yongnuo. I actually had to go with a third party because Revain was out of stock. My product was listed as "used" but "like new". The device rattles slightly and the red metal ring that can be seen on the product images on the bracket appears to be either loose or slightly bent. Given the "used" nature of the unit I ordered, I am willing to dismiss this as a slightly dishonest use of the term "as new" rather than reflecting the actual quality of the new teleconverter. However, despite that dangling ring and rattle, my specimen seems to be working fine. I tested it with a 70-200 f/2.8 lens and a 135 f/2 lens. Autofocus was pretty fast on both lenses. One thing to note is that camera shake becomes an issue once you start using longer focal lengths. Especially if you are not used to shooting with a lens longer than 200mm. When doubling down to 400, consider using a tripod if possible. If you're new to teleconverters, be aware that you're wasting a lot of light. For example, at 70-200 you can say goodbye to f/2.8. They shoot at 5.6. Plan accordingly. They work best during the day in good light. From my still very limited testing, it doesn't bother visually much, if at all. I didn't have the exposure issues that some other reviewers have mentioned. I shoot entirely in manual mode and don't know if that has something to do with it or if the product is that different. My first test shots were pretty sharp and clear, but like I said above, a tripod is a really good idea. Camera shake is really amplified with a teleconverter, making good technique even more important. The bottom line is that teleconverters aren't magic. No image will ever be as good as the actual focal length lens you are trying to achieve with the converter. This is a hoax and therefore there are tradeoffs. I don't know how often I'll use this, but we'll see how it holds up anyway. Eventually I'll even be able to take a real Canon version and compare it. If so, I will update this review. But for now it works, and that's the main thing.