I'm in the market for a new lens to add to my collection and I've narrowed it down to the upcoming Sigma 50mm Art or the Canon 135 f2L. I realize these are for very different purposes.
I currently have a nice arsenal of lenses and mostly do portrait photography as a hobby (35 f1.4, 85 f1.8, 24-70 f2.8 and 70-200 f4).
I really enjoy portrait photography. I'm torn between the versatility of an extremely sharp 50mm vs a magical 135mm f2L portrait lens.
Can anyone offer any advice to help me seal the deal ?
The torrent of responses probably means you have some very good advice already.
My feeling is that 50 mm is covered very well by your 24-70 and the only advantage is the speed and additional increment of sharpness that would go unnoticed in most, if not all, applications.
If you like portraiture the 50 would not be my choice. To get good framing one has to be so close the facial features are distorted or one cannot get far enough back to make a satisfactory environmental portrait.
I think the real driver of interest in this lens is its other-worldly sharpness which is fine but IME not something that the viewer of a print will be aware of or appreciate.
I cannot comment on the value of pleasure at pixel peeping the files but I would be honest about it as it is a solitary pleasure.
The 135 would , IMO, be the answer but I would rent both to see what rings your bell.