Crazy FoCal readings on d3s @ number of different lenses...

Started Aug 5, 2012 | Discussions thread
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Jarekn
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Crazy FoCal readings on d3s @ number of different lenses...
Aug 5, 2012

The battle continues, I've noticed that my auto-focus has been off for a while now, I took it to local Nikon center where they have done couple of test and told me that things are ok and that the small difference is normal.

Not buying into that story I ended up getting copy of FoCal pro and doing my own tests...

I tested number of different lenses:

50 mm 1.4, brand new 85 1.4, 24-70 2.8 and 70-200 2.8.

Number of test completely failed, few times I got msg: The result obtained from the camera and lens are not behaving as expected despite trying more testing also about the range being out of limit...

Here are some quick results:

50mm:
@ 1.4 @ 1.6m (reported distance to subject) = +18
@ 1.4 @ 1.0m = +12

@ 2.0 @ 1.0m = +15
@ 2.0 @ 1.6m = was unable to get results - tried few times.

24-70mm:
@ 2.8 @ 1.6m @ 50mm = -2
@ 2.8 @ 1.6m @ 24mm = +13
@ 2.8 @ 1.6m @ 70mm = unable to get results.

@ 2.8 @ 1m @ 50mm = +2
@ 2.8 @ 1.2m @ 24mm = +20
@ 2.8 @ 1m @ 70mm = unable to get results.

85 1.4:
@ 1.4 @ 1m = Unable to get any results
@ 1.4 @ 1.5m = +19
@ 1.4 @ 2m = unable to get results

70-200 2.8:
@ 2.8 @ 2.7m @ 200mm = +20
@ 2.8 @ 2.3m @ 105mm = +13
@ 2.8 @ 2.1m @ 70mm = +3

@ 4.5 @ 2.7m @ 200mm = unable to get results

Weird thing i noticed is that when i zoomed in/out on the 70-200 even though i didn't move the tripod, the distance to object was reported differently.

I should mention that shop did do some work previously on my camera - think they replaced the shutter aperture mechanism plus something else... Wonder if it's something they have messed up?

Any input would be very much appreciated, after going through this exercise I really hope Nikon managed to fix this as this is completely ridiculous... My plan is to take the camera to Nikon on Monday with my lenses and my system and leaving it with them till they either fix it or get me new body or lenses whichever will fix the issue. You'd figure after spending 20k things would work like they should but it's one thing after another...

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Nikon D3S
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