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DPChallenge Forums >> Tips, Tricks, and Q&A >> Advice on EOS 400D aperture problem
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AuthorThread
 10/12/2009 12:50:36 AM · #1

Hi,

I have had my 400D for a few months and recently have been having a problem with the aperture or shutter stopping down, I'm not quite sure.

So, if I take pictures with the aperture at f4.0 I have no problems no matter what the shutter speed.
However if i set the aperture at anything higher that f5.0 then i get an error and have to switch off/on to use again.
So thats on manual mode, and its the same on other modes if the aperture is above f5.0 i get an error.

And, sometimes when I switch back on after the error the viewfinder is dim and focussing doesn't work either.

I am confused, any help would be much appreciated,

Thanks
Panasonic LUMIX DMC-LX100
Nikon AF-S NIKKOR 24-70mm f/2.8G ED
 10/12/2009 12:56:32 AM · #2
Have you tried checking and/or cleaning the contacts between your lens and the body?
Nikon D7000
Nikon MF 50mm f/1.4
 10/12/2009 01:29:40 AM · #3
I agree. If you have access to more than one lens, try another lens to isolate the problem to either the camera or the lens. You may also try taking the lens off the camera and putting it back on, making sure that it locks into place. While it is off, have a look at the contacts to see if they look right.
Welcome to DPC.
ETA, It may be a computer glitch in the camera. Look in the manual, and try a full reset. That fixed one of my Fuji's recently.

Message edited by author 2009-10-12 01:31:59.
 10/12/2009 08:11:42 PM · #4

Thanks for the replies,

I took the lens off and cleaned the contacts about a month ago and it didn't solve the problem,
I only have access to one lens so I will try a full reset and hope that will work.

Cheers
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