Originally posted by biz-engineer It looks like this 21 ltd is best for indoors / architecture, not ideal for backlit landscapes due to fringing.
That's way to harsh! There has been countless very nice outdoor and landscape shots. The way wood lying on the grass becomes cyan is a bit troublesome but it should be a one click thing in any decent postprocessing software and probably in camera as well.
It seems to do trees against sky very well as long as it's not overcast or very diffused light. That's one subject that's been very well covered by samples. Even if few have been full size.