The question might be better asked on the Digital thread, more likely to get additional thoughts. The Sony E bodies don't have built in Stabilization and the Tamron Sony version doesn't have stabilization, only available in Canon and Nikon mount. Not sure if the Metabone Canon to Sony E adapter maintains IS. What you get with the zoom is zoom, need to carry only one lens, don't need to think about changing lens in the middle of a shoot. Although the Meyer's were good in their day, not as good as a modern lens, that includes a zoom, saying that in general what could make a difference if resolution. Talking MP resolution not film resolution, once you get up to 42 MP not sure if the primes will out resolve a modern zoom. For wildlife maybe a 300 or 400 Minolta G lens with A body to E body adapter, the F4 versions. As you plan on manual focus even getting on with a broken Af will work. I have a Tonkia 400 5.6 which is very good, somewhat out of the box a Sigma 600 F8 mirror lens, in A mount so you need an adapter, light wt, at ISO 1600 ok in even poor light. Sony stills the Minolta version which is a 500. both the Tonkia and Sigma are under $200 each. Other option is look at Canon EOS primes and a Canon to Sony adapter.