I just bought a corded Opteka Shutter Release. This is it's Amazon link: http://www.amazon.com/gp/product/B003XN4XJU/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1#productDescription.
Though the title says it works with the Nikon D3100, I plugged it in (it was hard to do so) but it doesn't work. I attemped it on the Auto and Manual settings.It will not take shots, nor will it autofocus when half pressed. Any help would be appreciated.
Added (1). Additionally: I have turned it on and off again before testing.
См. статью: Opteka Remote Shutter Release compatible with Nikon D3100?