need advice on converters

[kimtonykl]

which gives better image quality... Canon EF 2x converter on Canon 70-200 f2.8 IS ll lense or the Canon 100-400 f4.5 alone lense

 

[cin19]

You need count on your photography technical skills first, then the equirments is 2nd. In general, you will have better performance with EF 2X + 70-200 f2.8 IS.

 

[Ubrales]

Whenever a converter is used there is some compromising of quality involved.