2. The Kenko 2X with 7 elements provides higher resolution (see the last image)
3. However, the longer tub and more glass in the Kenko 2X may need more light compensation.
The test devices used were a Minolta Maxxum 50mm F2.8 Macro Lens and a Sony A230 camera.
|Image through Q 2X|
|Image through K 2X|
|Q 2X vs. K 2X (cropped from the two images above)|