Originally posted by Mike.P® I had both. Sold the 50-135mm recently as I never used it, fantastic IQ but the focus speed was just so painfully slow.
There is a lot of complaining on the DA* focus speed.
I decided to find out for myself how bad it is and did some playing this afternoon with my DA*60-250mm and my DA55-300mm which has a lot of good press.
These tests has not been very scientific.
The first was indoor (my bookshelf in my study) both lenses at short and long range.
First starting to focus from close to far, then from far to close.
The Ev for my room then was: 5.
I repeated the same procedure pointing the camera outside.
The Ev value here was: 9.
My conclusion is that the DA*60-250mm focuses more or less as fast as the DA55-300mm, except is is much more reliable.
The 55-300mm sometimes stops focusing for no obvious reason...
Look at the video:
The DA*16-50mm however focuses a lot faster than the DA*60-250mm.
I did test that earlier.
See this video:
In the end my conclusion is that it is not all that bad, although one might expect a faster focus time from an expensive SDM lens.
- Bert