Alan Chan wrote: > > I had these Sigma 24mm and 28mm few years back, both manual focus. > Optically, both are great imho. However, both suffers from flare problem and > substandard mechanical design, particularly the aperture ring assembly. The > 24mm even had worse rubber, aperture ring material and electrical contacts > (all 3 wore noticably faster than the even older 28/2.8). The satin finish > was a joke and the 10 years old shiny surface is better. Both hoods were > useless to guard again flare, although they were well made.
Hi Alan, I would agree with all of the above, but should add that the later 24mm Sigma has severe barrel distortion and a yellow colour cast that sets it apart from the neutral rendition of Pentax optics. The earlier Sigma lenses were indeed better made. John
