Originally posted by bollicina31 I'm unable to access the link you posted. However, I can offer some comments based on my usage of the A*135 and also what I've read and seen of the VL125. I think the two strongest points of the VL125 are its lack of CA, including bokeh CA (no doubt this is due to its true APO design), as well as its macro capabilities.
As for the A*135, it is incredibly sharp and surprisingly resistant to flare even wide open, and this makes its largest apertures very useful (in fact, I don't even bother with a hood, though I probably should look into getting one). So the f1.8-2.2 f-stop range is definitely a real advantage over the VL125 (it's not just for bragging rights) - that's a 1-stop advantage, by the way.
The only weakness of the A*135 is bokeh CA (I have not been able to detect any lateral CA), however whether this occurs and to what magnitude is highly dependent on the scene and lighting conditions, as well as f-stop used. When bokeh CA does occur, you can usually get rid of it by stopping down to f2.5-2.8. So at common apertures, the VL125's CA performance advantage might not be that great.
I've seen a "brick wall" test between the two that showed the A*135 to be noticeably sharper, especially below f4, but I'm hesitant to draw too many conclusions based on this one test. I know there are a few folks who own or have owned both lenses, and it would be nice to hear from them.
Overall, both the A*135 and VL125 belong to the legendary class of lenses and they are my top picks in this FL.
You can't go wrong with either one.
To give you an idea of the level of excellency we are dealing with here, 16-9.net was blown away by the corner performance of the A*85 when compared against the Canon EF85/1.2L MkII, and some say that the A*135 is even better than its shorter brother.
Oh yeah, as for MF focus - I find the A*135 easier to obtain accurate focus than my A50/1.4. However, I am looking to get a split-prism screen to help speed up my MF.