I just got a 90mm Tamron F/2.8 DI model 272E used on Ebay and it arrived today. I noticed immediately nothing happens when it is set to the AF position (ie no autofocus..don't hear the motor..nothing). I was under the assumption this model is supposed to have a built in motor that auto-focuses with my camera body (D5300)..am I wrong??
So DOES this lens work with entry level dslr's with no internal motor or not?
The more I read about this particular model of lens, the more confused I am about whether the one I bought should auto-focus with my body or not! I just want to know if the lens I purchased is defective OR just not auto-focusing with my camera body (D5300).
Some forum posts have said that Tamron released this model lens but then retrofitted it AFTER the release to have a built in motor? What?! Is this even common practice?
One forum post:"the BIM has been retrofitted to the 272E after it was released. That is true of most of Tamron's lenses. The problem is that there are older 272E lenses without the BIM and newer ones with the BIM. If you are buying new, you are going to get a lens with the BIM. But if you are buying used, you can find 272Es with a BIM and 272Es without one. That was what I was trying to make clear. Compounding the problem, the model numbers are often inaccurately posted. "
Another:"You'll have to look on both the lens and the box. The Model 272En-II is the model I have, and it does have a built-in motor, not a screw drive. Perhaps this is an update, and you may be correct. My lens has the stamp 272E as the model number.
Then, looking at the lens mount, you may see an indented screw at the 5:00 position on the bottom-right side, while looking at the mount with the lens oriented up as though on the camera. If there's a screw there (different from other screws on the back of the mount), then you have a screw-drive lens, which indeed won't autofocus on your camera."
Mine does indeed seem to have a screw at the 5 o'clock position so does that mean it will not focus with the d5300?
I also cannot seem to find whether the BIM(built-in-motor) models are labeled differently than the non BIM models?? So if I were to return this lens and get another, how do I ensure auto-focus work with my camera body? I mean physically labelled differently on the body. (I know the newer ones are supposed to be model 272EN-II but is that actually printed somewhere on the lens itself? Getting conflicting info)
I DO plan to use this lens mainly for macro photography, but if I can buy a used lens for a similar price tag that also auto-focuses with my body, it just makes more sense to go that route right? I heard some buyers find the screw-drive lenses preferrable as the AF is faster than with BIM, is that true? I do eventually plan to upgrade to an FX format body so buying only FX format lenses that are well received.
Can somebody help me out on this one? Anyone own this lens with a dx body and have one that has working AF? If so, what is the model printed on your lens or on the box?
Posting pictures of the lens and box to show you what I have on hand!