you can autofocus.

送交者: 水手于 2014-01-02, 07:16:47:

回答: is teleconverter good? do u manual focus? 由 pgss 于 2014-01-02, 00:00:48:

with 1.4x there is very little degradation in AF speed, with 2x it is slower but usable.

i guess for such distance focus can be manual, but quality.. - pgss (57 bytes) 2014-01-02, 22:47:00 (735979)
- 打鸟用手动调焦很好玩？ - blackbox (136 bytes) 2014-01-03, 09:31:19 (736002)