With istD making all our old primes x 1.5, is there any change to the aperature eg:
a 135mm f1.8 becomes effectively a ~=200mm but is there any change in the effective aperature? Kind regards Kevin -- ______ (_____ \ _____) ) ____ ____ ____ ____ | ____/ / _ ) / _ | / ___) / _ ) | | ( (/ / ( ( | |( (___ ( (/ / |_| \____) \_||_| \____) \____) Kevin Waterson Port Macquarie, Australia
