D750 -- is it finger trouble or is there a fault?

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I haven't been able to get out and about since I got my Nikon d750 but I have been trying it out inside and I'm wondering if I'm doing something wrong.

If in low light I focus on something on the other side of the room and then set the aperture to the lens' widest aperture I sometimes find that I can then no longer change the aperture using the command wheel. If I wait a moment or press the shutter button to focus on the subject I find the aperture changes ok. I have swapped the control of the aperture on aperture priority from the front sub-command dial to the rear command dial. All a bit strange.
 
Is the behaviour the same if you put the aperture control back to the default dial?
 
Are you adjusting the aperture on the lens or purely with the wheel(s)? Pretty sure that the lens has to be set to its smallest aperture on the lens itself for the command dials to adjust it on the body.
 
Nod said:
Are you adjusting the aperture on the lens or purely with the wheel(s)? Pretty sure that the lens has to be set to its smallest aperture on the lens itself for the command dials to adjust it on the body.
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Sounds like the reason.

Martin, if you're using older lenses, the aperture ring needs setting & leaving before turning your camera on, then use the front command dial (or rear in your case) to change aperture.
 
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There is a setting in the menu that allows you to use the lens' aperture ring instead of doing it on the camera, if that's how you prefer it.
 
jpw said:
There is a setting in the menu that allows you to use the lens' aperture ring instead of doing it on the camera, if that's how you prefer it.
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When set up that way can you still use the wheels to adjust the aperture?
 
It seems to have cleared itself for now as I haven't had the problem today. I'm wondering if there was a flaky connection between the camera and the lens although I don't know if that could throw up this sort of problem.

Regarding the aperture ring on the lens, I have only one lens that has one and that is my trusty (if weighty) 180mm f2.8 and yes, it is set to f22 on the paerture ring.

It only crossed my mind after I ordered the D750 -- "does it have a focus motor?" -- as the 180mm doesn't have a motor of it's own. Fortunately, it does, phew.
 
Well, the problem sorted itself out in the end and it is no longer intermittent and has gone hard. The sub-command dial no longer functions at all and I have returned it for a refund. Now I have to struggle once more with my desire for a modern FX camera with modern looks and my attraction to the Nikon Df with it's exorbitant price tag.
 
ShinySideUp said:
Well, the problem sorted itself out in the end and it is no longer intermittent and has gone hard. The sub-command dial no longer functions at all and I have returned it for a refund. Now I have to struggle once more with my desire for a modern FX camera with modern looks and my attraction to the Nikon Df with it's exorbitant price tag.
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Why didn't you get a replacement?
 
ShinySideUp said:
Well, the problem sorted itself out in the end and it is no longer intermittent and has gone hard. The sub-command dial no longer functions at all and I have returned it for a refund. Now I have to struggle once more with my desire for a modern FX camera with modern looks and my attraction to the Nikon Df with it's exorbitant price tag.
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Just get another D750.
 
twist said:
Why didn't you get a replacement?
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In this case, Amazon didn't offer a replacement in their returns statement, which I find odd as I have got almost instant replacements in the past for other stuff that I have returned (I buy a lot of stuff from Amazon:) ). I would certainly have taken a replacement had it been on the table but since it wasn't my options are open again.
 
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