Did anyone ever try this combo?
I've just bought a 70-300mm macro that would become a 210mm-900mm using a 2x teleconverter over the the LA-EA1. One thing is for sure...this would probably be one tough combo to test your manual focusing skills.
I have a 2x, teleconverter and use it occasionally. I am not sure how it would work with the LA-EA1, so I will speak generally.
When you use a teleconverter you are adding another set of lens into the mix. There are three things to think about.
1- The light coming into the camera drops a bit. Not a lot, but it is noticeable. You will have to compensate when taking your pictures. In good daylight, this is not an issue. In dim light it could be.
2- Make sure the lenses are in good shape. If you get a crappy version, your images will suffer.
3- You are adding more length, two inches or so. To me not a huge issue, you have to decide.
All in all I am glad I have mine. I use it with both my 70-150 and 28mm, but only occasionally.
I have a 2X teleconverter that I have used once on my 500mm F8 to take photos of the moon. It does test your manual focusing skills but this is where the NEX's focus peaking really shines. I was using a tripod when I took the pic in gale force winds, I think the image would be sharper if it wasn't so windy and it wasn't shaking the tripod.