Just read some very positive comments from Nikon users of the Sigma Art 35/1.4. Does anyone use this on the A7 or A7II. If so, which adapter do you recommend, and what are your opinions of this lens on the A7 cameras? (I have the Sony/Zeiss 35 f2.8 which I don't love like I do my Sony/Zeiss 55 f1.8. I want a lens with similar sharpness and color reproduction to my 55/1.8. I'm wondering if the Sigma's IQ is closer to the 55 1.8 than my 35/2.8) Thank you for any info and advice.