Just happen to tune in here and I am very curious as to why sell the Batis 85 in favor of the Sony GM 85? Is the GM that much better?
That's a question you can only answer by your own. There is not much difference between batis, gm, otus, milvus, loxia. But there are subtle differences, which may be something you are interessed in or not. Some will say, these differences are not worth the money/size/weight/aperture. Others will say, that's exactly what I was looking for...
most people will ask about:
- sharpness
- size
- weight
- fastest f-stop
- cat eye bokeh vs. round bokeh
- harsh bokeh vs. smooth bokeh
I'm more about:
- natural colors
- with or without aperture ring
- mechanical (MF-lenses) vs. focus by whire (batis) vs. motor driven focus by wire (GM)
- smoth transitions/flat vs. contrasts/3D
- flare handling
- sun stars, coma
- chromatic abberation performance
- distortion