I am an amateur photographer that shoots high school sports for our local high school. I wanted a fix aperture lens but found that it limited my distance to do so. I purchased this in hopes of getting some of that distance back. There is no quality degradation when using this with your lens.

I use this TC with a Minolta 400/4.5 HS APO coupled with my Sony A77ii & a99 bodies. I honesty don't see any degradation in image sharpness and AF function is retained when used with this lens.

If you got the 70-200mm Sony G lens then this is a natural addition and the lens is not complete without it. It works flawlessly including auto focus with the Sony Alpha 100(and I assume the A 700)

Works exactly as it should with the Minolta 200mm APO. No noticeable degradation in IQ unless you pixel peep and even then it's pretty negligible.

I use this TC on my Sony 300mm f/2.8 lens mounted on an A900 camera. I bought the 300mm lens at a good price from a photographer who needed to raise money quickly. I bought her Sony 2X teleconverter at the same time. I loved the 300m lens but was consistently disappointed when I used the 2X TC.

I bought this teleconverter after purchasing the SAL20 2x teleconverter. The SAL14 is great when I just need that little more reach on the lens. The optical quality is perfect and with only 1 stop loss of light makes this a great addition to my kit.

I brought this extender to give me more focal length and it works very well.

I works great. Just like any other Teleconverter, it drops some f-stops so I usually try to avoid using it, but there are some situations it comes in handy. I keep it in my camera bag all the time. Most cases, I combine with 70-200mm f2.8, and I try to get somewhere 300mm focal length.

I was told before I bought this that it would not work on non-G series lenses, in 20 years of using Minolta hardware I have never encountered this so I was skeptical - but I can confirm it is true. None of my Minolta or Sony "non-G" lenses will work with this T/C.

It has fine resolution but will not fit on medium-length (or shorter) lenses. It only fits on my 500m lens. I had hoped to use it on others.