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shooting blanks - EXIF says used focal length "0" at "F/0"

Cadence

Leesburg, US
6 posts

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Cadence Silver Member Nikonian since 17th May 2009
Sun 16-Oct-11 05:43 PM

Shot 13 of those yesterday on assignment - the last 13 of the shoot, and today (even before removing the lens to visually inspect the contacts)the camera is acting fine.

All was nominal, changed metering from pattern to center weighted, and got gross underexposures thereafter. Don't see how that metering change could have been the cause. Guessing the body and lens weren't talking, or not properly. Per EXIF data body "thought" lens setting was f/0 - pretty wide! - anyway, used 1/1600 and up for those 13 shots (bright daylight, iso 320), and possibly sent no f stop setting at all to the lens, leaving it in fact at rest on f/22, thus all black shots. 24-70 2.8.

Ideas? If this was all a contacts issue (they seem clean), how to be sure it doesn't happen again? The lens seems tight on the body and I recall no impact (physical) damage such as might have caused alignment issues.

Apologies if this should have been posted elsewhere. Having problems with the topic pigeonholes.

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G