<p>It was my favourite FD zoom during my film photography days from '96-2005 (I could never see the point of AF as a young man...). Unfortunately my first copy suffered a drop and as a consequence snapped at the lens mount - my current copy also has an incredibly bad zoom mechanism which makes it hard to use unless kept dead level. So yeah, the build is an issue!<br>
I do, however, think it's a very good lens optically. In that respect, I tested a the FD 28-85/4 against my Contax 28-85 and, while leagues apart in build quality, there was very little to choose between them sharpness-wise on the Sony A7r. The Contax was marginally better at the long end, the Canon was arguably stronger at the wide end.</p>