Go Back   Steve's Digicams Forums > Digicam Help > Add-On Lenses

Thread Tools Search this Thread
Old Jan 29, 2011, 8:52 PM   #1
Junior Member
Join Date: Jan 2011
Posts: 5
Default Sigma 400mm 5.6f AF prime for Sony problems

I was woundering if anyone has ran into this problem i have older sigma 400mm prime auto focus lens. I bought a 1.4 SIGMA telecoverter to use on the lens i read in the chart that it would work but only on manual so i said ok so i put the thing on and it worked fine but when i took the teleconverter off and put the 400mm on and switch on the Autofocus on i started to get this strange grinding noise and now the thing will not auto focus right but works in manual and sticks. It has made me upset to think that i follow directions and the thing screws up my lens. Woundering if anyone has had this problem or any other problems with this lens and its gears.
Ericst11 is offline   Reply With Quote
Sponsored Links
Old Jan 30, 2011, 1:31 AM   #2
Senior Member
frank-in-toronto's Avatar
Join Date: Mar 2010
Location: Toronto Canada
Posts: 1,083

oh oh. bad news:
frank-in-toronto is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 8:38 AM.