>>3339289pretty much all of the 35s are the same, some differences with different lenses. on my b35 which i got for around 70euros (but you could find cheaper) i've got the triotar carl zeiss and its as clean as can be. i focus just by guestimating, almost always is within 'acceptably sharp' .. try looking in the rollei 35 group on flickr
https://www.flickr.com/groups/rollei35/