I find that the Voigtlander is sharp enough even at f0.95. It's certainly perfectly useable at f0.95 and I've not seen any evidence of a drop in performance at close distance. In fact, as I've said many times here the close focus ability of this lens is one of its strong points. Negatives are that there's some blooming at the widest apertures and some CA but is there a f0.95 that doesn't suffer from a little of both of these? Many f1.4 and slower suffer to some extent too.
Before I got it I read this review at LL.
http://www.luminous-landscape.com/reviews/lenses/voigtlander_f095_25mm_micro_43_nocton.shtml
v the 25mm f1.4 they give a "slight edge" to the Voigtlander. Doubtless other reviews will give the nod to the Panny (We know it's not really a Leica don't we? There's nothing wrong with being a Panny though.) so I suppose the choice comes down to AF v MF and f0.95 v f1.4. Choices.... choices...
I bought the Voigtlander because...
- I dislike FBW no marking lenses.
- I wanted the widest aperture available to both allow the use of faster shutter speeds and / or lower ISO's and to give as much DoF control as possible at 25mm.
- I wanted a general purpose lens that I could also use as a pseudo macro lens for flower shots and the like.
However, going for the AF 25mm f1.4 is a perfectly valid choice too.
PS. If you do go for the Voigtlander and you intend to shoot at anything between f0.95 and f2.8 in good light (and why wouldn't you?) you'll need to invest in an ND or two. I bought two, ND2 and 4, and sometimes have to use them both to keep the shutter speed below 1/4000 sec.