Hmmm. On 7/7/05, Jens Bladt <[EMAIL PROTECTED]> wrote: > I have done a small test of the Sigma 3.5-5.6/18-50mm DC vs. the Tokina AT-X > 2.6-2.8/28-70mm (which IMHO is an excellent lens) @ 28mm f.4 and F8: > http://gallery37564.fotopic.net/p17229269.html > > I have enlarged the central part of the four images inside the same frame. > > It may be a little difficult to study the results from a small 800 KB image. > Anyway, it seems that @ F4.5 the Sigma lens is not very good (unsharp). But > @ F8 it's quite difficult to see any difference. > I guess if used the Sigma lens @ F.5.6-F.11 there's no visible difference in > most cases. Fully open it's not saticfactory at all - as expected.
It seems to me that Tokina is also slightly more contrasty even at f/8... But this Sigma is probably tiny compared to Tokina and for $35 (right?) you couldn't be wrong. -- Boris
