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Z6 Interval shooting images OOF sometimes


markst33 Avatar
markst33 14 78 2 Ireland
27 Feb 2019 9:48AM
I bought the Nikon Z6 about 3 weeks ago andso far I have to say I am absolutely delighted with it. I have been using it with the FTZ and my Nikon 24-70 f2.8 primarily.

However I came across an issue which I am wondering if anyone else has encountered either on this or any other camera.

I wanted to do some star trail photography so before I headed out anywhere exotic I was just trying it out in my back garden to get to grips with intervalometer settings.

On Sunday night I set the camera on a tripod and using the top of a tree in my backgarden as a focal point I set it up to take
169 shots at 13sec exposures with 2 second intervals and left it going.

When I imported the images into LR I saw that the first was in focus but the 2nd 3rd 4th and 5th were OOF and the 6th was in focus but the next 7 were OOf and so on.

I put this down to the fact that I had not switched the lens from AF to MF.

So I tried it again last night. 199 20sec shots with 2 sec intervals. I prefocused on the top of the tree and then switched the lens over
to MF and let it do its thing. However when I imported the images into LR I was faced with the same situation. Out of 199 shots 125 were OOF.

I am really scratching my head at this stage. I thought it might have been lens slippage as the camera was tilted upwards at >45 degree angle but that does not explain how after taking a few OOF shots, it refocuses considering its set to MF.

I have confirmed that the Focus Shift Shooting option is set to off so I really don't know where to go from here.

Just so as you know I am not completely new to this, I had done interval shooting in the past with my D7000 without encountering this issue.

Any help would be most gratefully received.
CTee Avatar
CTee 16 131 United Kingdom
27 Feb 2019 12:57PM
did you need to turn off any in body/lens stabilisation as it was mount on a tripod?
It might have been trying to stabilise something that wasn't moving.
markst33 Avatar
markst33 14 78 2 Ireland
27 Feb 2019 3:23PM
I think I have found out what the issue was.

Apparently theres a bug in the software where switching just the lens to MF does not disengage AF, so although you think you have switched off AF its actually still on in the camera itself because not all the information is passed from the lens via the FTZ to the camera body.
So to avoid this issue ensure that in AF-Mode the MF is chosen aswell as MF on the lens.

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