There is nothing really comparable in the Z-mount.
In terms of optical aberrations, the Z 50/1.4 may come closest, but that does not make it comparable in terms of rendering/bokeh.
The best decision would probably be to stick with what you value so much, the lens whose rendering/bokeh is exactly what you want.
In this case, the AF-S 58/1.4G, and not to look for a twin that doesn't exist.
I think it's a bad idea to replace the lens whose rendering/bokeh/look you love just to get rid of the FTZ.
If it were a question of weight/dimensions, but even then, switching to a Z 50/1.4 S basically doesn't make any difference.
The Z 50/1.4 S is not only 35g heavier, but also has almost the same dimensions as an AF-S 58/1.4G including FTZ.
The end result is that you get rid of the FTZ without generating any significant advantages in terms of weight and dimensions, but in return you lose a lens whose rendering seems to fit you like a glove, for a lens that doesn't have that magic.
There is nothing really comparable in the Z-mount.
In terms of optical aberrations, the Z 50/1.4 may come closest, but that does not make it comparable in terms of rendering/bokeh.
The best decision would probably be to stick with what you value so much, the lens whose rendering/bokeh is exactly what you want.
In this case, the AF-S 58/1.4G, and not to look for a twin that doesn't exist.
I think it's a bad idea to replace the lens whose rendering/bokeh/look you love just to get rid of the FTZ.
If it were a question of weight/dimensions, but even then, switching to a Z 50/1.4 S basically doesn't make any difference.
The Z 50/1.4 S is not only 35g heavier, but also has almost the same dimensions as an AF-S 58/1.4G including FTZ.
The end result is that you get rid of the FTZ without generating any significant advantages in terms of weight and dimensions, but in return you lose a lens whose rendering seems to fit like a glove for a lens that doesn't have that magic.
There is nothing really comparable in the Z-mount.
In terms of optical aberrations, the Z 50/1.4 may come closest, but that does not make it comparable in terms of rendering/bokeh.
The best decision would probably be to stick with what you value so much, the lens whose rendering/bokeh is exactly what you want.
In this case, the AF-S 58/1.4G, and not to look for a twin that doesn't exist.
I think it's a bad idea to replace the lens whose rendering/bokeh/look you love just to get rid of the FTZ.
If it were a question of weight/dimensions, but even then, switching to a Z 50/1.4 S basically doesn't make any difference.
The Z 50/1.4 S is not only 35g heavier, but also has almost the same dimensions as an AF-S 58/1.4G including FTZ.
The end result is that you get rid of the FTZ without generating any significant advantages in terms of weight and dimensions, but in return you lose a lens whose rendering seems to fit like a glove for a lens that doesn't have that magic.