help with extention tubes

i bought a set of extention tubes for my d3100 they seem to mount just fine but then my camera says lens not attached when i turn it on. please help i know the af will not work with them but i rarely use af anyway if anyone has any suggestions on what i may be doing wrong or anything i can try i would greatly appreciate it.

Well first off Welcome to the forum

If you fill out your profile we can better answer any questions that you might have.
You can do that at http://nikonites.com/profile.php?do=editprofile

Some useful links
Nikon Product Manuals available for download
Nikon | Imaging Products | Digitutor


Thanks

If you could tell us more details like what lens you are using and what brand of extension tubes we might have a better chance of helping you.

tabatha6901 said:

i bought a set of extention tubes for my d3100 they seem to mount just fine but then my camera says lens not attached when i turn it on. please help i know the af will not work with them but i rarely use af anyway if anyone has any suggestions on what i may be doing wrong or anything i can try i would greatly appreciate it.

Click to expand...

Most likely problem is that your extension tubes do not let your camera to commuicate with your lens. Do your extension tubes have a CPU (the contacts that you see on your Nikon lens) on them? I would think not. That is the most likely culprit.

AC016 said:

Most likely problem is that your extension tubes do not let your camera to commuicate with your lens. Do your extension tubes have a CPU (the contacts that you see on your Nikon lens) on them? I would think not. That is the most likely culprit.

Click to expand...

Yes, but also to add to AC016's question... which lens are you trying to use with the extension tubes? As certain lenses electronically will not work with them at all, but if you check on Nikon's site it clearly states which lens will/not work in tandem.

Put your camera in manual [M] mode, it will allow you to take photos even when the camera thinks no lens is attached.

thank you everyone im using the lens that came with the camera its an AF-S Nikkor 18-55mm 1:3.5-5.6G

If extension tube haz electrical connectors it is bad extension. If no contacts its normal because camera can't communicate with lens you can override in manual "m" mode

If you bought the cheap extension tubes off ebay/amazon then odds on they have no contacts for the lens so you will have to shoot in manual mode or the camear will think it has no lens attached. Reason I know is I have them, I wasn't aware there was extension tubes that have the contacts the lens needs to communicate with the camera but they are out of my pocket for the times I use extension tubes