Having Problems with my Sigma lens

[m.dizay]

Hi.. im currently holding on to a Sigma 28-200 f3.5-5.6 compact zoom macro lens.. But its unable to Auto focus on my d40X... Is there anyting i missed or overlooked? Pls help...Thanks

[tsjcsl]

I don;t think the lens is HSM, but rather auto-focus is by a screw. D40x needs a lens with a built in motor.

[cichlid]

if you dont see"HSM" printed on the lens body...it wont auto focus with your D40x

[dreamzcape]

Originally Posted by m.dizay Hi.. im currently holding on to a Sigma 28-200 f3.5-5.6 compact zoom macro lens.. But its unable to Auto focus on my d40X... Is there anyting i missed or overlooked? Pls help...Thanks

yes, you could've possibly overlooked the fact that d40X can only autofocus with sigma lenses with HSM and Nikon lenses with AFS or AFI.

[m.dizay]

Thanks for the replies.. appreciate it.. but are there any examples where the HSM is located on the lens?

[psychobiologist]

look for the alphabets.

if there is no HSM written, there is no built in motor. look at the lens right bottom corner.. is there a screw slot for driving?

[Yatlapball]

I believe for sigma lenses they are usually located between the zoom and focus rings. Anyway... you can look here http://www.sigmaphoto.com/lenses/len...18&navigator=6

[geraldkhoo]

Ths following is a list of compatible Sigma lenses that will AF on D40/x:

http://www.sigmaphoto.com/news/news.asp?nID=3356

I don't see the lens you have on this list... so I guess it would not AF on the D40/x

[m.dizay]

Thankx for the info guys!! But what about Tamron lenses? which version is with built in motor?

[calebk]

Originally Posted by m.dizay Thankx for the info guys!! But what about Tamron lenses? which version is with built in motor?

No Tamron lenses have built-in motor for Nikon mount at this moment.

Only look for Sigma HSM lenses, or original Nikon AF-S lenses if you want autofocus on your D40X.

[knpan]

hey not really true, i mounted a HSM 70-200 f2.8 on a d40x, the AF cant work.

[kyo86sg]

Originally Posted by knpan hey not really true, i mounted a HSM 70-200 f2.8 on a d40x, the AF cant work.

really??? Sure not the lens problem? this is a shocking news worz!

[knpan]

hmm very sure. because i mounted the 70-200 immediatedly on other 2 bodies, the AF would work

[valkyrie]

Originally Posted by knpan hmm very sure. because i mounted the 70-200 immediatedly on other 2 bodies, the AF would work

First time heard that 70-200mm HSM not able to AF on D40x. I have seen D40 AF with no problem. Weird!

[psychobiologist]

the d40x must have been on manual focus mode heh.

i used hsm lenseson the d40 before, works perfectly for me.

[zenman49]

Originally Posted by calebk No Tamron lenses have built-in motor for Nikon mount at this moment. Only look for Sigma HSM lenses, or original Nikon AF-S lenses if you want autofocus on your D40X.

not true. they have a 18-250mm built for d40, see link below:

http://www.dpreview.com/news/0712/07...amron18250.asp

they even come up with their VR version, they call it VC, vibration compensation :

http://www.tamron.com/news/35mm/28300vc.asp