I have used this lens for landscape use.. and its good provided you push up the aperture to F5.6 onwards. Usually.. if you use a high ISO film/setting, this is rarely a issue.
However, I'm not too sure if the original lens hood is causing my pictures to have shadow or is it due to the wide angle that i'm suffering from WA light fallout effect. Any advice on this issue?
Here is the screen capture of my film scan in thumbnails form. You can clearly see the shadow at the edges of the film which forms a circular shadow at the edges. Most of the shots were taken at the widest edge 19mm.
PS: Maybe the moderator can shift this to the General section. As this lens isnt a canon specifiy nor does it concern canon products alone.