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Dear all,

For some reason my xt3 auto iso is locked at a fixed iso of 400. The auto iso range I set is from 200 to 6400 with a minimum shutter speed of 1/125 sec. When I move the iso dial to the A setting,  the following image briefly flashes on my screen. This has never happened to me before. Any advice in resolving this problem would be greatly appreciated. Thanks

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