Testing Sigma 30mm f2.8 & 45mm M. Zuiko 1.8

Those are pretty close...The color on the Sigma looks a bit warmer and a bit more pleasing to me. The Olympus is sharper but I'm not sure you'd notice without it being pointed out.

 

And to think that the Sigma is $200-300 cheaper depending on when you got it, pretty crazy.

 

Got my Sigma 30mm yesterday. I caught it trying to eat my lunch.

 

Wow those new Art Sigmas look pretty nice! You need to post that in the Camera P*rn thread.

 

I have both lenses. The Sigma is a very nice lens, I've taken many nice pictures with it and like the long normal focal length, but... The out of focus areas look much nicer with the Olympus, the Sigma has significant amounts of CA (can be easily corrected in software) and doesn't focus nearly as fast. Not to mention that they are far enough apart in focal length, for them to used differently.

 

Whoa : silver and smooth ...
If the 19mm looks like that I'm going to hunt one down for style reasons alone.

In lower light my Sigma 30mm focuses significantly faster than my mZuiko 45mm, just to add a different view to Rubenstein's post.
In bright light they are both so fast I don't measure.

 

Hmmm... I find the Sigma focus a bit faster than the Oly... whatever they are both crazy fast

 

The Zuiko is sharper even at f1.8, though not by a lot, by 2.8 it looks a good deal sharper to my eyes. But the Sigma has less contrast; if you boost that I'll bet it looks sharper. Having said that, I'll repeat what I always say: it's not what it looks like straight ooc at 100% that matters; it's the final image. None of those are going to be as big as what 100% represents.

I just got the 19mm Sigma and like it a lot.