By technical editor Matt Allard:
British firm(TLS) are best known for servicing lenses, making adapters and performing PL lens conversions. At IBC this year yi they were showing their full PL conversion of the well known f2.8 D. The conversion gives a new metal body, but more importantly a beautifully smooth focus, zoom and iris with focus turning the correct direction.
Also on show were their range extenders for PL mount. The adapter is compatible with several different lenses and results in a 2 stop light loss.