Sigma Super Telephoto 600mm f/8.0 Mirror (Reflex) Manual Focus Lens for Minolta Maxxum "lens locked" Questions

lens is "locked" my zoom lens appears to be stuck at 300mm...It's attached to my nikon d80. It will not zoom in or out... Just appears to be stuck there. Is there a little lock switch on the lens?? My

lens with a Canon mount will not stay locked in the 28mm position. When the camera is hanging from it's neckstrap, the lens' own weight is enough to disengage the lock and extend the lens fully. Help?

instuctions for opteka 650-1300 lens for use on konica minolta trying to use the lens on konica minolta DSLR, i have the correct adapter but screen says "no lens attached" i am trying to find out ...

...lens aperture, you should slide the aperture lock to the locked position. The aperture lock is located just right of your largest setting f3.5. This slider should line up with the orange line. To ...

I am using a Tamron AF 18 - 250 mm lens on a nikon d90 and some times on auto focus F---- is displayed and i cannot take a photo. Is this something to do with the match of lens to camera ? Make sure ...

nikkor 18-55mm lens on Nikon d50 locks up in autofocus mode. When the camera is completely in autofocus mode, the lens will lock up and not autofocus on center object or any other spot in view. (Yes, ...

Wife dropped camera. 55-200 lens won't lock on. Wife dropped camera. 55-200 zoon lens won't lock on. Two of three tabs to lock lens to camera broke. Can I do it myself or do I need a repairman? Where ...

...lens is locked at the maximum apeture of 1.8. It seems I have done this yet it still flashes at me? Any clues how to lock this lens correctly? The only reason i can think it is doing this is that I ...

locked my nikon 50mm lens aperature ring to the appropriate setting for my Nikon D60, yet the camera still tells me to lock it into place, as if it is not registering the fact that I've locked it down

zoom lock slide switch Zoom lock switch will not lock or unlock at times It will only lock the lens in the 50mm position (for storage and carrying) or past 100mm (to keep the elements from making ...