i have to write in English to expresss my opinions Als mein Deutsch nicht taugt .
I keep using different glass from my extensive glass "library".
I am unable to decide what is best. sometimes manual ones, sometimes the annoying autolenses. I particularly dislike not having aperture scales and having to use camera buttons.
False focus setting by the auto mechanisms is also annoying, but as the lazy alternative it gets used,
I discover that I use the wide (11-23) zoom more often than M- glass and others on my CL, and when longer lenses are needed I prefer the magnifying view that the Nikon-Z has, provided that the focus and light metering point stays where I expect it to be.. Also, the anti shake system is helpful as long as I remember to set it.
I belong to the excentric group that believes whatever is worth photographing should be "gestocken scharf" (unsharpness can be gained cheaply by smearing a filter with a thin layer vaseline if one does not have patience to use focus and aperture). For medium close ups the Leitz AME 2,8/100 is quite good, while for digitizing slides I use an Apo-Rodagon 50mm on an old Olympus bellows, Back before I gave away my Olympus MFT and all lenses that fit (within the family) I found the Schneider 50/0,9 or so surprisingly sharp and contrasty where it was focussed but disliked the paper thin depth of field.
The various Zeiss zooms are also reasonably good and useful, but the 35-135 does for instance absolutely not fit in a medium sized pocket like for instance the little Elmar C-90mm/4 and its distantly related 40mm/2 Minolta variety (while if longer glass is needed the leitz Apo 180 is not too large.to carry around) The really long ones need a rucksack a tripod, remote or delayed release, which does limit them to specific tasks, while strict sharpness and contrast demands must be granted temporary exceptions.
New "basteleien" like the Nikon remote control that I butchered to use its plug to couple my Novoflex Pigriff C to the camera release plus various projection lenses- have also been interesting to try.
A thorough disappointment was the plastic Canon 50mm f.2 (or perhaps 1,8) that came apart from a fall that my Summicron 2/50 would have easily survived while continuing to give excellent sharpness and contrast nuances possibly only bettered by the latest Kern Switars.
Having bought my "library" a long time ago when the manual lenses were deeply unfashionable I did not worry much about cost and still pick up he occaional addition at fleamarkets in order to try them. Overpriced glass is anything which does not provide a fairly straight MTFcurve 30 lpmm above 60% when stopped down, even if almost free.
p.