Re: Fun With Sony _____
wow, excellent report! Did you try stopping down the lens to say f5.6 or f8 from the ranges of 13-16mm? If you can get that 10% of corners to sharpen up in full frame mode, I think this lens would be the ideal Full frame alternative ultra wide for the A7(r)!I bought the 10-18 today at the Seattle Sony Store which is slated for closure - they had all their display stuff at 20% off. Figured it was worth a try until an FE AF or Zeiss MF WA zoom or prime comes out and won't take much of a loss if I resell.
Took a few pics of sky and trees in both crop and FF mode and zoomed in on the LCD. Very little vignetting and on the LCD I couldn't see any color shift at 14mm in FF mode. 13-16mm looked pretty good. 10mm is pretty useless FF, but even 18 is worth shooting FF and cropping. Based on the LCD zoom, edge smearing at all focal lengths, but only in maybe the last 10% of the frame. My Oly 21/3.5 isn't really that much better in that respect.
Crop mode leaves a lot of good pixels unused.
The lens hood is incompatible with FF.
Kind of wish I had the A7R for this lens - 10mp crop feels like a throw back to old school digital.
I'll try to take the tripod out and shoot some test shots to share here shortly, if life allows.