"Err" code D70 gives me an "Err" code. How do I fix this? The image is about 4 stops underexposed.

D70..err display...problem with the loader section switch,rotating while loading is open,so get it repaired.

More than likely two things ... The blower tip touiched the blades or the sequence plate is defective . BERRIE SMITH CAMERA REPAIR
[email protected]

ERR is i think an error message generated when the camera can not read the cf card ? have you had an problems with corrupted images ?

buy a Canon

its apparture unit has faulted. it has to be replaced

Series of images is the KEY. If the Power you set the SB-600 is HIGH it will take a LONGER time to recycle than the SB-800. If you try to take a photo before the SB-600 is ready you will get a dark image. The randomness you get is due to the time between shots. In general try to run remote flashes at a lower power so they recycle faster.

I like the SB-800 because it can take 5 cells. 5 cells can really make a difference in the recycle time (faster) The SB-600 only takes 4 cells so it is slower.

Unfortunately, you may have a faulty flash pcb (printed circuit board) The part is around 50$ plus installation 200+ total repair cost. A work around would be to use an external flash unit from the hot shoe

Sounds like the shutter is sticking. This could be due to damage or just need cleaning. This probably means that you need to get the camera professionally serviced/fixed as shutters are extremely delicate.

I've got the same problem with my new ef 500 dg super and my ef 530 dg super. It occurs on all nikon camera's I could get.
D70, D80 and Fuji S5 Pro. I don't have this problem with an old (4 years) sigma ef 500 dg super.
I will try to contact Sigma for this problem.

I have no solution, but I wanted to add that I am having this same problem. You are, unfortunately, not alone. Jean