I have nikon d3100. It comes up as no lens attached in manual and will not let me adjust anything. its too dark to see anything. its stuck on the lens. UPDATE: thank you for all the help! I got it un stuck and I figured out how to work it. I just have to manually hold the aparture down. Its not meant for my lens but I can work around it :-) I have nikon d3100. It comes up as no lens attached in manual and will not let me adjust anything. its too dark to see anything. its stuck on the lens. UPDATE: thank you for all the help! I got it... » Read More I have nikon d3100. It comes up as no lens attached in manual and will not let me adjust anything. its too dark to see anything. its stuck on the lens. UPDATE: thank you for all the help! I got it un stuck and I figured out how to work it. I just have to manually hold the aparture down. Its not meant for my lens but I can work around it :-) « Show Less
1679696
I'm sorry to hear of your problem. Unfortunately, I'm not familiar with the D3100 model. I believe both my model camera's Flash "F" in the display for fault or something in "M"anual setting but still fire. What lens are you using? This might explain the whole problem. Also you might try attaching them both to the camera body and unscrewing lens first then remove just the ring from the camera body. I will seriously try to help you as much as possible.
1679697
when I use my reverse mount ring or make the following settings f8 1/250 my kit 18-55 lens at 55mm, as is a G-type lens, there is a metal pin which placed a small paper pedaso to maintain the aperture fully open. this pin is moved from right to left in the inner edge of lens.I hope I've been helpful.
1679698
If you are using the reverse mount, you are mounting the lens backwards. This means there will be no electric connections to the camera. You must set your lens to manual and adjust the focus and exposure manually, otherwise it will not work. Which lens are you using? Did you attach the ring to the front of the lens glass or the cameras lens mount?
211947
I have a Nikon D700, had the same problem. The focus plane is too close. The only way I got mine to work is in combination with an Orion Shorty 2x Barlow. This forces a 2x multiplier when you may not want it, but it does focus with it attached along with the Universal camera mount. I am currently investigating just how much extension is added by using the Barlow and will be looking for an extension tube without magnification.
994220
It has an attachment to connect to a lens. I had to attach it to the end of my regular lens. I returned it because if I adjusted the lens off of my lowest setting it didnt work. I thought it was a waste and returned it. And honestly, it didnt do much of what it said. I wasnt impressed at all. I dont know if it will fit your D3100. If it has a normal range lens, than I would assume do. ( 15-50)
1621262
It took me a while to figure out, too, so hopefully this description will help you. So, the lens on the camera has a black ring around it. That has to come off in order to put the adapter on. The first time I took it off was a little hard because I was afraid of breaking it or something, but once you do it once, you'll have no problem doing it again. There should be a point on the ring that sort of juts out a little bit. You have to use that to sort of twist it off. It might help if you put a flat knife or something underneath to get a good grip, too. Just see what works for you. But once you get the black ring off, you can putt he adapter on, you just have to make sure that all the points line up with the grooves in the camera. Then it should snap into place, just the same way the black ring on the camera was. Once the adapter is on the lens just screws right in. I hope that helps...
253878
When I received this lens, it came with the Nikon adaptor, so be sure before you add an adaptor about what's included. Keep in mind that this is a manual focus lens with a fixed f-stop, so you will need to set your camera on aperture priority and the camera will adjust the shutter speed. Autofocus and automatic metering won't work as it does with Nikon lenses.
806915
If the camera has any automatic modes, auto Iris, the camera will not see the lense, it does seem to work in a pure manual mode. On my D5300, the readout says, " lense not attached", but it will take a picture.The light metering also does not work. For the price I thought it was worth a try.
1224915
Honestly, I can't answer an Nikon questions. I have a Canon and haven't had a problem. There was a part that I had to place between the camera and the lens; if you do not have that (Nikon or Canon connector/adapter?), that may be what is causing you a problem.
1032153
Dear James, I find it strange that the lens will not attach correctly on your camera model Nikon 3200 because it has a Nikon F-type assembly, the same as the bringer of D7000 on Amazon when I bought came to market. Clarified that the lens Sigma 8-16 must say it is to attach Nikon. I acquired this lens and use it without problems so far.Yours sincerelyAlejandro D. Knauer
14177
Try going to the set up menu, go down several items till you get to "Release w/o lens," and enable this. This allows the shutter to work without a lens (which is what the camera thinks when there is an adapter in place).
1937694
I'm having the same problem using this lens on my D80 camera. What you are saying is that there is no way for me to use the ring to adjust the aperture? It only works when locked on 22?? This doesn't seem right.
739839
I have the same problem and mine miss focuses too. I have contacted Nikon, but I'm still waiting for a reply. I'm curious if this lens is a waste of money? Did you guys ever find out what was wrong?
1069092
Hello hello Rmauma...! The Little push-button on the side... is working... like the release-button... on your camera... Push it In... and turn the lens... same way... as your normal lenses. If the button... or the adapter is stuck... Perhaps try... to twist the adapter... just a fraction... in both directions... while pressing... on the button. This can give the Little locking pin... enough room... to Work. Now take the lens... with the adapter... one hand on each... close your eyes... and let your hands Work... Hope this will help... Greetings... Jakob.
26527
I believe this was sold as a fixed mount lens, not an Adaptall II lens, and it came in a Nikon mount. If you don't mind my asking, why do you need to use an adapter, are you trying to remove its fixed mount and convert it from another brand of mount to Nikon?
605671
Did u loosen the rounded thing where the mount is? U have to turn it to loosen and then slide the light into the mound on your camera and then twist it back down to tighten again.
229627
my canon eos 17-85mm lens is stuck on the adapter for the samsung nx210 camera and i have tried everything to remove it without success. please help me with this problem, thanks robert talone, e-mail eliztal@rcn.com, thank you
1664419
You need to have an adaptor to your particular camera. Mine is a t-mount. These are little rings that do not cost much. I have used this with a Nikon. It is strictly manual focus, but fun to play with until you can afford something better.
412230
Hello, the lens is manual, works manually only. Please put your camera into "no lens attached" mode and continue to shoot manually on in Aperture priority mode.Thank you.