bpulv Loc: Buena Park, CA

I had a strange problem occur today while doing some test bracketed shots with my Nikon D800. In manual mode, I made a series of exposures at ISO settings of 100, 200, 400, 800, etc. to 6400 and used the camera's metering system to measure the light then manually adjust the exposures to the meter reading, one stop over and one stop under for each ISO setting. This worked fine for the first studio setup. I repeated the sequence for a second setup, but when I got to ASA 400, instead of exposing at ASA 400, the camera switched to the auto ISO mode and started taking pictures at the ISO settings it wanted to use instead of ASA 400 as I had set by pressing the ISO button and turning the thumb dial.

Since then, I have not been able to get the camera to allow me to manually set the ISO. I read everything listed in the D800 instruction book's index under the heading "ISO", but I cannot find anything to explain how to resolve the issue.

Would someone with intimate knowledge of the D800 please help me.

Mike1017

You might try to reboot set back to factory defaults and then see what happens and if all is good change back the setting that you normally use give a shot Mike

bpulv Loc: Buena Park, CA

Hi Mike,

I thought about that, but I want to save that as a last resort since I have a lot of customized settings.

HarryBinNC Loc: Blue Ridge Mtns, No.Carolina, USA

Try This: Press and hold the ISO button and turn the front dial while looking at the lower right corner of the top LCD - you should see the Auto ISO toggling on and off as you turn the wheel.

N4646W

I've noticed with mine that after changing the ISO, if you have noise reduction on, if I change the aperture setting immediately after, it will trigger the auto iSO. If I give the shutter button a slight press, after setting the ISO, this does not happen. I've also noticed that when I'm using the command dial to change the ISO or shutter , my hand shifts and I roll the front dial. I don't have a lot of feeling in my hands so I have had to make sure of my setting before I take the shot.

Ron

DaveO Loc: Northeast CT

After checking that thing called a manual, I would also find how to download my settings to card for future use.

mborn Loc: Massachusetts

That is what I do on my D810.

FiddleMaker Loc: Merrimac, MA

Good tip. this works on my D750

bpulv Loc: Buena Park, CA

Thank you Harry. That did it!

bpulv Loc: Buena Park, CA

Thank you Ron.

bpulv Loc: Buena Park, CA

Thank you Dave,

I didn't know you could download the camera's settings. I will look into that.

DaveO Loc: Northeast CT

Beats learning it the hard way. My first lesson was getting it back from service by Nikon and having to start over!
The positive aspect is using a manual, or google, to review reasons for certain setting choices....lost of neat stuff in the manual! Steve Perry's Nikon Autofocus book has also been invaluable.