Normand1130 wrote:
Heavy over case day, on Program mode, F4, 60th sec, 12000 iso
Assuming you mean overcast day, I'm surprised that all your shots aren't overexposed with settings like that.
ISO 12,000 is good for shooting in a dark tavern, but I wouldn't think it would be needed or wanted outdoors during daylight, even if it's a cloudy day.
I would expect to see ISO 12,000 settings of f/5.6 - f/8 and a shutter speed of 1/8000 for a normal exposure on an overcast day.
The question then becomes why -- if it's in P mode -- the camera didn't switch to a smaller aperture and a faster shutter speed.
You're basically ignoring several requests asking if you set the camera on auto ISO or if you dial in the setting yourself?? You asked for help and people are trying to help you but it makes it impossible if you don't answer questions.
You can also get this if you are on a tripod and have bright light entering the viewfinder. Meter will expose for that light. But at f/4 on a f/4 lens it should not matter.
But in "P" mode everything should be perfect . Some settings are not configured within the camera or the lens is having issiues or bad connection between the two.
Normand1130 wrote:
It did again, A, Auto ISO did for 6 shots then back to normal.
So what are ALL the exposure exif settings ?
Can you provide them for the good exposures and the over exposed ones in the set ?
Also what lens is it? (Is it more than one?) . I mean in the example you give some detail previously you say "overcast day f4 1/60th iso 12k" . As one of the possibilities of over expossure is a lens that's not stopping down knowing the lens important. Ie if your shooting a f4 max ap lens then its wide open anyway but if you shooting a faster lens then you could be 1,2 or 3 stops over .
Contact Canon service and request warrantee work, the 1Dx should be new enough. Save the original over exposed files and put them on a CD and write out a description of what is happening. Tell them it is with XXX lens or several lenses. (If with more lenses then that points to camera, if just the 24-105mm then it could be just the lens or camera.). Include the lens in the return package so they can have both units to do some test. If the lens is under warrantee then no problem, if not there will be a charge for repair of the lens.
Until Canon service has the combination and sample images and can check it out, we can only give you speculations of what is wrong.
. Some settings are not configured within the camera or the lens is having issiues or bad connection between the two.