I haven't used the Canon 28mm f/2.8 IS, but would agree that would appear to be a good choice for most people unless they must have faster than f/2.8. IMO the f/1.8 version doesn't get sharp enough to use for more serious purposes until f/2.2 - f/2.5.

I do use the OM Zuiko on full frame. They have 3 variants of 28mm lenses:

f/3.5 this is the must budget oriented and is pretty sharp corner to corner (~ $40)
f/2.8 I haven't used it, many seem to prefer either the f/3.5 or f/2 version (~ $80)
f/2 this is the high end Zuiko and owners of it seem to like it (~ $300)

I haven't had it really long and the winter here has been brutal so I have limited snaps so far. What I have is in Flickr.

As you can see it is the size of a pancake lens.


2013_10_24_4442_upd by dthrog00, on Flickr

Image quality seems quite good in my opinion. I've used more for tiny size and the overall fun factor than for low light.

Low light example - I believe this is wide open, 1/30 second, ISO 3200


2013_10_29_4644_LR_upd by dthrog00, on Flickr

General use


2013_11_03_4859_LR_upd by dthrog00, on Flickr


2013_11_03_4852_LR_upd by dthrog00, on Flickr


2013_11_03_4802_LR by dthrog00, on Flickr

I use a $15 OM to EOS Fotodiox adapter. I have a trio of Zuiko primes: 28 f/3.5, 50 f/1.4, and 50 f/3.5 macro. All were under $100. Examples using the trio: http://www.flickr.com/photos/6825585...uikoolympusom/

Dave