D3100 Cannot AF in Live View ?

[redwine]

Hi,

Just got a D3100 body only.

Notice that for my Sigma 17-70mm F2.8-4.5 HSM,
it cannot AF when in Live View.

For my Sigma 50-150mm F2.8,
it can AF both in normal and Live View.

The manual did not have much info on this aspect.
Anyone encounter similar limitations ?

 

[baggiolee]

maybe it's that lens compatibility issue on newer cameras

 

[ZerocoolAstra]

Hi,

Just got a D3100 body only.

Notice that for my Sigma 17-70mm F2.8-4.5 HSM,
it cannot AF when in Live View.

For my Sigma 50-150mm F2.8,
it can AF both in normal and Live View.

The manual did not have much info on this aspect.
Anyone encounter similar limitations ?

If your lens can AF when shooting normally (ie using VF), it puzzles me how come AF doesn't work in live view.
I don't have that lens or body, so I can't verify.
Interested to see if someone can shed some light on this.

No issues with my 3rd party lens (screw-driven AF) on my cam in live view.

 

[tkte0408]

Hi,

Just got a D3100 body only.

Notice that for my Sigma 17-70mm F2.8-4.5 HSM,
it cannot AF when in Live View.

For my Sigma 50-150mm F2.8,
it can AF both in normal and Live View.

The manual did not have much info on this aspect.
Anyone encounter similar limitations ?

its e lens AF compatibility in live view.. my tamron 17-50 also cannot AF in liveview, whilst my sigma 70-200 f2.8 II can..

 

[redwine]

its e lens AF compatibility in live view.. my tamron 17-50 also cannot AF in liveview, whilst my sigma 70-200 f2.8 II can..

I also suspect its the lens compatibiliy issue.
Looks like i'm not alone.

 

[mco77]

My D3100's AF doesn't work with my sigma 50-150 (version I). Compatibility issues I guess.