Reviewed by 2 customers
I am using a Canon 70D with EF-S 18-135mm STM kit lens, which I absolutely love but just wish to have a bit wider field of view for landscape. But i am not ready to dish out another 600 dollars for an actual wide angle lens plus that is not my primary use. So I decide to pick up one of this converter just to try it out. As expected straight out of the box the result image is strongly distorted with heavy vignetting at the edge. It makes the edge a lot softer and center slightly softer, and the significant chromatic aberration can be observed as well. But most of this issues are easily alleviated with some post processing, which result in a smaller picture due to the cropping required to fix the amount of distortion, but in the end the result is not that bad. Especially for the price. I have taken two quick shots right outside of my window and put them side by side to show the difference between with and without the extender on my 70D's EF-S 18-135mm STM, before and after similar post-processing. I would only use this extender when I need that extra field of view from 18mm when doing landscape.
Bought this for a vacation trip, to try to have a super wide angle lens without carrying another separate real lens. It works okay, it actually is natively sized to 67mm filter threaded lens. It defintely increases the angle of view from your lens. Problem - Horrible vignetting in the corners - I don't mean light falloff, I mean COMPLETE black - the image circle doesn't fully cover the cropped sensor on a Nikon D90 when attached to a 18-105mm lens. Zooming in to fill the frame needs to go to about 30mm, which should be equivalent to 0.43 x 30mm = 12.9mm, but I have a wider angle of view with my bare lens at 18mm. If you can deal with the blacked-out corners and just want something to give you a once-in-a-while little extra view angle without dropping $$$ on a super-wide lens, this is okay.