Quote:
Originally Posted by HinFrance
You're too kind  If I do come across any ice-cream or swimming pool related passages that I am struggling with, you'll be my first port of call.
Bearing in mind what you said about the Tamron SP90, I just went and tried my screw focus driven one. Interestingly, less than a second from closest focus to infinity. Mind you, it can hunt like mad sometimes. Actually, I guess the truth of it is they are all screw driven, it's just that some lenses have the motor inside rather than outside. |
I'm not surprised the older SP90 is quicker focussing than the new one that I have. I read too that the Tamron 28-75mm is exactly the same. The screw driven one is quicker than the motorized. For posed portraits and macro its a fine lens but, I rarely bother to use mine for anything other than that because its just too slow to focus.