Mamiya/Sekor Auto XTL

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The Mamiya/Sekor Auto XTL, is a automatic exposure 35mm SLR introduced in April 1971.

At this time, Mamiya was known for their M42-mount cameras in the DTL series. These were distinctive for their switchable spot or averaging meter pattern, but were lower-priced models still relying on stopdown metering.

The Auto XTL was a dramatically more ambitious camera, launching a new bayonet mount which enabled open-aperture metering and shutter priority autoexposure. Switchable metering patterns continued. The XTL was planned to have a motorized drive for continuous-action photography, but few drives were produced beyond the prototype stage and these are extremely rare today.

Mamiya offered mount adapters which permitted many older M42 lenses to be attached, although these could only use stopdown, match-needle, manual metering.