Nikkor 35mm AF-D overexposing on D850

[iosif_astrukov]

nick_davis - no, I am quite careful with my lenses, never left to extreme temperatures, at least that I could remember, actually I never leave my photo bag in a car - as where I live there is little chance to find it afterwards 😉 

the service said something like 20-30$ for the cleaning, but no answer yet

I didn't save the test images, to achieve any effects on the image there should be various /not simultaneous/ movements of the blades, otherwise as other pointed there would be only bright image, as it was, not even vignetting 

 

[rodeo_joe1]

On 12/11/2022 at 3:50 PM, iosif_astrukov said:

the service said something like 20-30$ for the cleaning

That sounds remarkably cheap, considering that the lens has to be almost completely dismantled to do the job properly. And with the risk of tearing the ribbon-cable attaching the 'chip' to the AF motor. 

There's gotta be at least an hour's labour involved. 

[iosif_astrukov]

the guy from the service said something like... they open the whole optic elements from the front, as one I guess, but... no idea honestly 

I called today - they haven't even started yet, so... it would be next year obviously 

[iosif_astrukov]

 

[rodeo_joe1]

Interesting. Almost as if Nikon had designed the whole lens for easy access to an oily aperture! 

Personally, I'd have dropped the whole iris assembly into a bath of methylated spirit as soon as it was lifted free. 

The guy ought to treat himself to one of those miniature Chinese-made cheap electric screwdrivers too. And a set of rubber O rings to use as friction wrenches. Cos' there's no way that the front-ring of that lens came out of the factory only finger tight. 

 But nothing explains how the darned oil got onto the blades in the first place. 

[CvhKaar]

THe opening from the front side of the lens was designed by Nikon that way so that it is easy to change it into a coffee cup or milkshake  cup holder i think...

😎🥤