06-17-2017, 09:21 AM
This must be a supertester - Ultra wide angle, not really fast with f/4 and still being able to prove focus-shift 
I found it difficult to focus adjust the 20/1.4 which remains not reliable in PDAF wide open. Mostly because it's difficult to get proper targets at infinity. Maybe I need to book a flight in space...
I'm looking for a replacement or a sidekick for the optically superb 14-24 from Nikon. The real bad thing with that lens is sensitivity to sunbeams. Maybe I keep it for indoors because of f/2.8 and since there are a lot of UWA to choose these days, the second hand prices are not worth a sell.
Another candidate is the 14/1.8. I'm a bit afraid it suffers from the same effects I could not work around at the 20/1.4. I was also tempted to get an Irix which has not AF-problems for sure. Just because it has no AF...
I found it difficult to focus adjust the 20/1.4 which remains not reliable in PDAF wide open. Mostly because it's difficult to get proper targets at infinity. Maybe I need to book a flight in space...I'm looking for a replacement or a sidekick for the optically superb 14-24 from Nikon. The real bad thing with that lens is sensitivity to sunbeams. Maybe I keep it for indoors because of f/2.8 and since there are a lot of UWA to choose these days, the second hand prices are not worth a sell.
Another candidate is the 14/1.8. I'm a bit afraid it suffers from the same effects I could not work around at the 20/1.4. I was also tempted to get an Irix which has not AF-problems for sure. Just because it has no AF...