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Canon EOS 300d... focusing and shutter button problem

Hi, a a recent outdoor movie event I took photos in various lighting conditions, in darkeness at the end. My autofocusing was working because I recall difficulty getting the lens to "land" on an image focussed - I switched to manual in these situations. A few days later, I attempted to focus in AF mode, and it was sluggish. The first frame would autotocus and then all I could get was the metering info with the viewing screen. It didin't respond quickly. The lenses I use are EF 28-80mm and EF 100-300mm USM (non digital lenses). Today I tried again and the focusing does occur on AF (when shutter button half depressed). I tried these lenses on my film EOS 3000N and the lenses focus as I expect with the shutter button half depressed. Any suggestions to fix this sudden problem? I have had no problems in the 4 years I've used this camera. Oh, one more thing, I don't always see the red dots within the 7 autofocusing boxes.

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  • chavezm Apr 13, 2009

    AF does not work at all when the shutter button is depressed halfway. The lens focuses only when the shutter button is fully depressed.

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