My Sony A100 displays a "No Lens Detected" when I attach the Opteka lens. Need help!
1586189
My Sony A-57 operates the same way. I bought a Opteka T-Mount adapter for a cheap 500mm lens. I had to go to the menu to allow it to release the shutter when the lens is not on, since the camera cannot detect the manual lens.
1586190
I use the Opteka adapter with an a580 camera, so I'm not familiar with your camera's settings. But try enabling "Release w/o lens" in the menu. When you enable that function you can use your camera with or without a lens, for example coupled to a microscope. The camera continues to function the same way.
1586191
By default it would appear that on the Sony A100 like my Sony SLT-55a is configured to prevent the shutter from opening when there is no lens attached to the camera. Using manual lenses, lenses with out the electrical contacts to talk with the camera, requires the changing of some menu settings with in the camera to allow the shutter to be actuated with or without a lens. The manual for the Sony A100, available in PDF format from http://www.docs.sony.com/release/DSLRA100.pdf, on page 96 refers to turning off the shutter lock in "Custom menu 2". I suggest that once the photo shoot is done with the manual lens to turn the shutter lock back on prior to removing the lens in order to protect the sensor behind the shutter. I trust this information is useful.
1586192
You need to put the camera in full manual mode. Since this adapter has no AF function it will not register with the camera. Once you're in manual you should be fine. Aperture is fixed to what the telescope is so you adjust your exposure using different shutter speeds. Then to get the shutter to release you need to turn on the "release w/o lense" setting. After that you should be good to go.
1806253
Mine works fine it's clear without any pink circle. So yeah it might be defective that the camera lens are not working right.
817156
I had the same problem, because this model is too similar with the compatible canon model. This lens is "designed specifically for APS-C sized sensors and Sigma SA Lens Mount" as is advertised (anyway, this very important fact should be more visible than it is)
48190
This flash is not compatible, you will need either the DSLR300 or the DSLR400VS for your Sony A100 camera.
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).
1595824
the "G" lenses don't have an aperture ring . f stop is selected with thumbwheel on camera
1949905
I purchased the opteka remote switch model name op-N3 guess what it doesnt plug into the usb port as advertised .I found no other port to plug into. what am I missing here. The camera is the olympus e-620
722034
If the lens doesn't retract all the way, slide a piece of paper in between the lens barrels. Try turning it on. This fixed mine tonight. I think the lens wasn't seated properly.Don't do this unless you are sure it's out of warranty.
1167108
No, this won't work! This fotodiox adapter allows Canon EOS lens to fit Sony Nex model using E-mount. It doesn't fit for older Canon 50mm FD lens which is smaller than EOS lens in diameter. Your Sony A100 also uses A-mount. Now try search "Fotodiox 10LA-FD-SN-G Lens Mount Adapter" on Amazon, which allow Canon FD, New FD, FL Lens to Sony Alpha Camera to include A100.
1058121
Please determine if your equipment is passive or active. Passive works well with most systems. If passive I recommend the sony glasses.
108332
You need to check your Sony camera hot shoe. You an do this by searching for a picture of a Sony Alpha 35 and looking at your camera's hot shoe. Hope this helps!
358254
I have purchased this lens kit for my Kikon 1 J 1, and I dont know either how I attach them to the camera and which lenses I can use in combination. Chun Li
811727
There should be a switch on the cord with an on/off button. Or try turning the lens.
627569
Make sure the battery is fresh and inserted correctly. By the way, access the battery compartment at the rear by the switch, not at the lens.
183443
The adapter is designed for Sony E-mount which is in the APS-C and Super35 sized sensor cameras. The A100 is a full frame cam and has a different mount. This one doesn't fit on your cam.
1278588
Try adjusting the diopter adjustment on the viewfinder- likely was off. Should view and record in focus.
1999635
Either Google it or look in the manual that came with your lens.Sorry, that's all I got.