Sigma 70-300 APO - Motor or not ?

leaky5

leaky5

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Just picked up a Sigma 70-300 from Ebay it did say in the ad 'with motor', not that it matters to me, but my son is looking for a D40 at the moment.

Is there any way of telling the non-motor versions from the motor ones ? It did not come with the original box or instructions.
 
If it's the D (which I had) then it does not have an internal motor, if it is a DG model then it does.

(The DG replaced the D with the difference being the addition of the internal motor on NAF and CAF varients).
 
dapprman said:
If it's the D (which I had) then it does not have an internal motor, if it is a DG model then it does.

(The DG replaced the D with the difference being the addition of the internal motor on NAF and CAF varients).
Click to expand...

I have a Sigma 70-300mm APO that says DG on it and it does not have a motor, so this does not seem to be a reliable ID method.
I am not sure how you can tell from the description, the best ID method would be if you can inspect the lens to see if it has a screw drive focus coupler. If it does it is a non motor lens. The motor version might also have a MF/AF switch, but I am not sure about that.
 
These may help.
This is the back end of a NON HSM Sigma lens - the 8mm.
3638457247_79d969ca94_o.jpg


Note the slotted screw head circled in red. When the focus ring is turned, this turns.

This is the back of a Sigma HSM lens - the 12-24 zoom.
3638457259_8efe7df8d1_o.jpg


You can see that there is a slot there but it's cut into the mount and doesn't turn when the focus ring is turned. Not sure about other Sigma lenses but my 70-300 Nikon doesn't have that slot (and is AF-S - Nikon's equivalent to HSM)

ETA... As you probably know, the D40(x) and D60 need AF-S or HSM lenses to AF.
 
Mine does have the focus screw, so I guess my son is Scre^&d if he wants to use it :D
 
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