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Old Nov 4, 2003, 5:26 PM   #1
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Default Exposure problems- 300D

I have had lots of exposure problems with my Rebel. I set-up several situations where I put the camera on a tripod and shot exactly the same shot and the camera metered it several different ways. The exposures differ when absolutely nothing else has changed. I have tried it in different modes and with both Canon and Tamron lenses. The results are the same no matter what...the exposure will vary up to 1.5 stops for no reason whatsoever.

What in the %&*# am I missing here? Tired of banging my head! :?
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Old Nov 4, 2003, 5:37 PM   #2
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Is the bracketing mode enabled?
At least on the 10D if you do not enable it to self cancel it will do this bracketing the whole time... ie -1.5, 0, +1.5, -1.5, 0, +1.5... etc

Also did you pick one single AF point? If the AF point changes the metering will change with the focus point accordingly... This is a more likely scenario.
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Old Nov 4, 2003, 5:46 PM   #3
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Thanks NHL, but I checked all that...bracketing included. As for the focus point, it shouldn't change- the camera and subject are not moved at all between shots. ????
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Old Nov 4, 2003, 6:24 PM   #4
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How about pushing in the AE lock button?

This will change the camera metering to partial (ie small spot circle) in any of the creative zone (in the basic zone it will not do anything). The exposure reading should be fixed and constant every time you push this AE lock button and release the shutter...

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As for the focus point, it shouldn't change- the camera and subject are not moved at all between shots. ????
...Even when the camera and subject are not moved at all between shots and what you're shooting are on the same plane of focus, the focus points could still move around and being an evaluative metering, the metering will move along with the AF points. Shoot a flat wall for example, the AF points will not always stay in one spot... They could move between areas of higher contrast (or darker tone!) automatically by the camera, all equidistant from the camera, unless you manually overide it or select a particular one.
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