overexposure in new canon eos 1dx

I have a new eos1dx and new 70-200 f.28 II and 24-105 f4 L

tWith both lens I am getting some pretty good overexposures shoting a picture in 1 frame autofocus.

the colors and focus are great, just way to light.

I am making sure the autofocusing squares are lighting up on the principal subject matter.

I have tried partial and spot metering also

I am shooting simple objects in my backyard like the chairs, grass, plants.

The shooting conditions are nothing special, no bright backlighting, high noon sun ,etc.

I can use the exposure compensatiopn at about -2 and this helps but the some of the colors are still to bright, really pop.

Thanks for you help and suggestions

<p>It sounds a bit like the lenses are not stopping down. <br>

Remove the battery.....reinsert it....Do a hard reset then:<br>

Try it on a subject where your lens is set to correctly expose at F/2.8? If that gives you a correct exposure you have your culprit. Try cleaning the contacts on the camera and lenses. Worth a try. </p>

<p>Is the AE button turned-on on the grip? </p>

<p>What does the exif data say about the exposures? If you can post a shot here we can check it for you if you don't have a way to do that. </p>

<p>If these things don't fix it I would definitely send it back to Canon under the warranty.</p>

<p> </p>

<p>FWIW: No such issues with the two bodies I've been using. adding to the above response, run some tests in controlled conditions and evaluate the results. Also, check whether the correct type of focusing screen is registered and whether the compensation dial "zero" is indeed zero.<br>

If none of the above, your lenses and/or your body are hosed.</p>

<p>To test whether the lens is stopping down, switch to M mode, and set your speeds and apertures independently. By varying aperture and not speed, you should see variation in exposure. No variation would mean your lens isn't stopping down as it should.</p>

<p>To test how your camera is metering, point your camera at a plain, white, uniformly illuminated wall, using the M mode. Find a combination of aperture and shutter speed that sets the "match needle" indicator in the viewfinder to the middle/zero position. Take a test exposure, and look at the histogram. You should have a sharp peak right in the center of the histogram. Now try repeating this test in the automatic modes -- Av, Tv, and P. You should also get a sharp peak right in the middle of the histogram with any of these. Now try your exposure compensation. That should move the peak around to the left and right. If your picture style settings are neutral, one stop of EC should shift the peak by one graduation in your histogram. Note that these tests don't "care" whether you're metering in spot, center-weighted, or evaluative modes.</p>

thanks to all

Rick M:

how do i do a hard reset?

Micahel liezbanski:

How do i check to see if the correct type of focusing screen is registered?

Sarah Fox :

Will do as you suggest

 

again

thanks

<p>Robert, to do a hard reset, remove the main battery and the memory ("coin") cell. Let the camera sit for a couple of hours (probably 15 sec is fine, but just to be thorough, a couple of hours). Then reinstall both. You can also try downloading and installing a firmware update if one is available.</p>

<p>I believe the focusing screens are registered in the custom settings. If you have the factory installed focusing screen, the factory default settings are probably correct, but it never hurts to check.</p>

<p>Get hold of another camera (any camera) and compare the exposure values against a plain wall. They should be the same in theory.</p>

Thanks again.

But the village idiot (me) has struck again.

Old fingers and not thinking the retaining screw for the small battery would actually fall down, have led to the small

retaining crew falling into the larger battery well. I cannot see it, and despite some gentle shaking nothing can be

retrieved So I am going to talk to canon monday with the expectation they will want it back for a while.

I will make sure to followup on all the suggestions and let you know .

Once again thanks

bob

<p>Robert, perhaps the 1DX is not the right choice of camera for you just yet.</p>

<p>Wow, good luck with your loose screw! :-(</p>

<p>Bob,</p>

<p>If they ask you to send it in for the screw, you may as well tell them why you were doing it in the first place, so they can test the camera for you fully. At least that way, you may narrow down the fault.</p>

<p>Rgds<br>

Ian</p>

<p>Robin, I think your response was a bit harsh when not knowing Bob's background.</p>