Reviews and Problems with Sigma 1.4X Teleconverter EX APO DG
Showing 1-10 of 158
TC Buyer Beware, Auto Focus, Doesn't Always Work With Dedicated Lenses.
MJH-64 "Michael Hooyman", Amazon
4 weeks ago
Summary: From reading the reviews I was convinced that this Sigma APO. TC. would work with my two Sigma lenses. I own the 150 - 500 mm. OS and the Sigma 120 - 400 mm OS and this TC did not work with both lenses, as far as auto focus was concerned, I don't know if the teleconverter was defective, or just...
Summary: I purchased this 1.4x extension to go with my 2x extension. I found that at times the 2x is a bit much. I took this teleconverter out for a test drive yesterday and got some great shots of newly opening onion flowers. When coupled with my 150mm macro lens the photos are remarkable.
Summary: I tried this with a Sigma 150-500mm on a Nikon D7100 DX and a D800 FX. Yes, you will get 40% magnification but the loss of image quality was higher. I could crop in post processing and get better detail without the TC 1.4 than with it.