Go Back   Steve's Digicams Forums >

LinkBack Thread Tools Search this Thread
Old Mar 9, 2011, 4:22 PM   #1
Junior Member
fotonut's Avatar
Join Date: Mar 2011
Posts: 2
Default Sigma work on Nikon D3100?

I suppose that owning a Sigma 8mm fish-eye lens and a Sigma 10-20mm zoom (purchased 5 years ago for the D50) would normally require that I know the answer to this question but I don't. Can I upgrade from a Nikon D50 to a D3100 and still enjoy the same level of operation with these relatively new lenses? I know I hear a motor moving the lens when these lenses autofocus but I can't figure where that motor is, in the lens or in the camera. I have been able to figure that a D3100 doesn't have a motor and my D50 does.

(Too many DX, SX etc acronyms on Nikon for me to figure it all out.)

fotonut is offline   Reply With Quote
Sponsored Links
Old Mar 9, 2011, 5:30 PM   #2
Senior Member
TCav's Avatar
Join Date: Sep 2005
Location: Washington, DC, Metro Area, Maryland
Posts: 13,826

I don't think the 8mm fisheye will AF, but if the 10-20 is an HSM it will work.
  • The lens is the thing.
  • 'Full Frame' is the new 'Medium Format'.
  • "One good test is worth a thousand expert opinions." - Tex Johnston, Boeing 707 test pilot.
TCav is offline   Reply With Quote
Old Mar 9, 2011, 9:57 PM   #3
Senior Member
Bob Nichol's Avatar
Join Date: Apr 2003
Location: Eastern Ontario Canada
Posts: 823

Sigma identifies lenses with a built in motor with an HSM designation.

The 8mm F3.5 EX DG Circular Fisheye doesn't have the HSM so won't AF on a D3100 and since this model was designed for use with full frame digital SLR cameras it may not be as fishy as you may hope.

Both the 10-20mm F4-5.6 EX DC HSM and the 10-20mm F3.5 EX DC HSM have the built in motor and will AF. In addition they are designed to work with Nikon DX cameras such as the D3100 and the D50.
Bob Nichol 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 On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 9:47 AM.