Not compatible for D3100
346802
I have a Nikon D3100 and purchased it for it. It it not compatible with it. IDK y they put that in their list????????????????
3695854
i bought the 32GB version for my Nikon D7000, and about 3-4 times a day (i'm not a professional, but was using this as my primary camera for my Hawaii vacation) the camera would go into demo mode indicating the card slot was empty. opening the compartment and re-inserting the card would re-register. At first i thought something had happened with my camera. switching to my back up class 10 32GB memory card fixed everything, however. horrible product, especially since it seems that the D7000 is supposed to be one of the only cameras that this card IS compatible with. DO NOT PURCHASE
4945415
I bought this for a Sony DSC-W570.  The product advertises that it works with that model.  It does not work with the model.  The plug does not even fit accurately.  It may work for some of the other Cyber-Shots, but not for this.
112383
I'm disappointed.  I bought this Sigma Teleconverter to use with the 3 late model Nikon lenses that I have.  This Sigma teleconverter DOES NOT work with any of my Nikon lenses.  None of the Nikon lenses will attach to the teleconverter.  I also own a new Sigma 18-250mm f3.5-6.3 DC MACRO OS HSM lens and, to my surprise, the Sigma teleconverter will not attach to this Sigma lens.  The teleconverter does attach and it works well with my Sigma 150-500mm f/5-6.3 AF APO DG OS HSM Telephoto Zoom Lens.

The Teleconverter Compatibility chart displayed with the Sigma Teleconverter ad on Amazon is bacially useless because it is confusing.  None of my Nikon lenses listed on the Teleconverter Compatibility chart.  I will keep this teleconverter because its fun to use with my Sigma 150-500 lens.  Only one star is given because of the confusion regarding the Teleconverter Compatibility chart and the few lenses that are compatible.  I'm going to bite the bullet and purchase a Nikon Teleconverter ($$$$$).
2504570
This adapted does not work with my Nikkon D70S. It does not look like adapter problem but Nikkon. It displays error CHE. I tried reformat in adapter in windows OS, different brands of SD cards, nothing works.

It works with card reader adapter.
1775578
Same issue for me, this is NOT for the Nikon 1 10-100mm lens.  Will be returning...
1307749
Even though it says different in the description, this items is NOT compatible with the Fujifilm HS30EXR camera.
2295740
Nikon D3100's don't have the remote option anymore so it's a pretty useless device for me and my camera. Unless someone can find it...DON'T BUY THIS if you have a D3100
587619
Not working with Nikon D800.
The adapter is too thick to fit into the CF slot in Nikon DSLR.

I was trying to used it with my eye-fi card, and it is a waste of money.
2609429
I purchased one of these cords for use in a wedding a found out that it will not work well with my Pentax K10D and my Sigma EF-530 DG. The zoom works and the auto focus assist lights up but the flash will not fire. The pins do not make solid contacts on the flash cords side to the cameras flash shoe.
4779430
Again, contrary to the specs advertised, this item was NOT compatible with my Canon 550d (Rebel T2i). This is the second item purchased from Altura that claimed to be compatible with Canon, and the second item I have subsequently returned.
1437692
Does not work with my D3100 and Nexstar 4SE. Various knobs and oblong features interfere with each other, and it is impossible to get a good fit. Thought I had my camera secured at one point, then it fell to the ground. Good thing Nikon builds their cameras sturdy, otherwise this t-ring would've cost me several hundred dollars.
508154
Does not fit Nikon model 3100 18mm-55mm lens as advertisedDo not waste your time and money. This cover is too small for the Nikon 3100 model. Sent it back for a refund.
1233713
BUYER BEWARE, is not compatible with the Nikon D3000 as stated in the title and some reviews!
2043640
My first one star rating.  The mini-connector is not compatible with the Finepix HS20EXR as advertised on the Amazon website.  The packaging does not indicate that it fits either, but of course you don't find that out until you receive it.  I then had the option to either return this remote switch or purchase a new camera.  I opted to return the remote.
1700777
The description mentions compatibility with Canon 60D however, even after reviewing the manual as well as using commons sense I was able to determine that it is NOT comaptible with my camera.  Perhaps I should have given more credit to recent buyers mentioning a similar issue. However, dumb me, I took the chance anyways, while excited to utilize the high range ability for my scheduled light painting project. Way to go. What a disappointment. This sucks, and Im returning it. Hopefully this will be done in a customer satisfactory way. Thank you for your time,
 Review -1 point
Kamil Lee
4526057
Does not work with the Nikon D5000 because it needs to know there is a lens attached, and it didn't register, but I could see that this would have taken great macro pictures if it worked with my camera.