Top positive review
One person found this helpful
Really Happy with this extender.
on January 23, 2015
Effectively doubles the focal length of my Sigma 70-200 2.8 APO DG HSM for my Nikon D610 which is a full frame camera. So, for $300 I have a zoom lens that goes from 140mm to 400mm at a reasonable aperture of 5.6 for the entire zoom range. I do not use this professionally and I am very happy with the quality of the image although it does lose a little contrast with the extender which is easily adjusted in post processing. I shoot raw files only, 24 megapixles so I have a lot of leeway to crop the image from the camera.
The extender certainly seems well made and is easy to use. It does add 2" to the length of your lens so if you are using a long lens then you are going to have to get used to a really long lens. When I first got my 70-200 2.8 the size and weight took some getting used to so it is the same thing all over again. Now I am very comfortable with the size. Adding a good carry strap like the Black Rapid also helps. The extender does not add much weight. Balancing the cost versus being able to double the focal length I think it is a great value. Would definitely make the same decision again.