Shutter sticking on 70-200mm VR Nikon

[Col 666]

Was doing my usual trackday stuff today and every second shot was coming out completely over exposed.
After some fiddling about I have found the shutter release on the lens isnt springing back

I bought the lens from ebay a few months ago so dont have a shop receipt, so what do I do now?
It is fully insured with but dont really want to make a claim as i could tell them I dropped it, but dont fancy going down that road.

How much do you think a repair would be and who would do it in Scotland?

Colin.

[RobDickinson]

Shutter release on the lens??

Could be either the lens wasnt stopping down properly or the shutter in the camera?

[Andy M]

Sounds like a problem with the lens blades, not the shutter.

Send it to Nikon, and prepare to bend over...

[VxDuncan]

You mean the iris blades? Surely if they are sticking, they will stick shut and under expose the image? Unless I guess they stay stopped down and the viewfinder got very dark - but then the meter would compensate for this anyhow?

Am confused. But then it is monday.

First thing I'd try is decent new battery, VR off. VR pulls some juice so see what that does. After that you could try cleaning the contacts twixt lens and body with a plastic eraser (taking care not to get bits in either!) and see if that helps. It's a common problem on those inferrior canons.

I'd also check nikons website to see if it's an incompatibility issue - maybe a firmware update might sort it.

Good luck!

[Col 666]

Its definatley the lens blades, dont have a receipt for it either so this could get expensive!
Called Nikon earlier so will have to bite the bullet!

Edited by Col 666 on Monday 18th June 15:45

[tybalt]

VxDuncan said:

You mean the iris blades? Surely if they are sticking, they will stick shut and under expose the image? Unless I guess they stay stopped down and the viewfinder got very dark - but then the meter would compensate for this anyhow?

Nah - the lense blades are wide open when you are looking through the viewfinder. When you take a picture they stop down the aperture for correct exposure, then spring back to let lots of light in again. Sounds like they are failing to move from the default 'wide open' position, resulting in over exposure.

[fergusd]

Could also be the body . . . the aperture is operated by a lever arrangement from the body . . . which presses on a wee tab on the lens . . . which stops down the aperture . . . which must be what's being talked about . . .

Try using the DOF preview - this just stops the lens down without operating the shutter in the same way as when the shutter is operated - you should be able to see what's going on more easily . . .

I'd guess that the lens mechanism is sticky and the body is not able to move it . . . I'd have thought, however, that the body would not have a problem with this . . . but you never know . . .

Fd

[Marc W]

I had a slightly similar problem on my Canon with a mirror jamming, cost me £120 to fix.

[Col 666]

Sent the lens to Nikon yesterday. The DOF button only works every third time or so, have tried it with the lens off and the body is fine should hope so too its only 3 months old D200!
When activating the switch on the rear of the lens it doesnt spring back, sticks wide open.