I had this

rej for:
Banding
Vignetting
UnderExp
After a deeply analisys on the works, equalizing limage level I could not find Band, but, this morning on teh site, moving up and down the pic on my screen I saw ... i reworked and chaged the frame and this is the result:

now my feeling is that I fixed the band but I want to discuss on vignetting, what I see here is not the lens defect, I boosted the regulation given by my software with my lens data but the sun was on my left and I think that is normal to see the sky darker on the right side than on the left no??
Thank's in advance to anyone want to leave a feedbak.