What does “AUTO-ZOOM” mean on my Zuiko lens?












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"Auto-zoom" is written on my Zuiko 35~70mm lens, is this a name of some lens technology?










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    "Auto-zoom" is written on my Zuiko 35~70mm lens, is this a name of some lens technology?










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      "Auto-zoom" is written on my Zuiko 35~70mm lens, is this a name of some lens technology?










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      "Auto-zoom" is written on my Zuiko 35~70mm lens, is this a name of some lens technology?







      lens terminology zoom olympus






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      edited 7 hours ago









      mattdm

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      asked 7 hours ago









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          Your lens dates back to a time when some lenses were still completely manual, and the aperture had to be manually closed for stop down metering.



          Your zoom lens has a more modern feature that allowed for wide open metering and then the lens would automatically stop down to the desired aperture just as the photo was take. By the 1970’s most lenses had this feature and they were called “auto” lenses.



          That’s why it is called “Auto-Zoom”.






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            0














            Auto refers to the aperture control, as Mike Sowsun describes. Zoom refers to the ability to change focal length.






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              2 Answers
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              4














              Your lens dates back to a time when some lenses were still completely manual, and the aperture had to be manually closed for stop down metering.



              Your zoom lens has a more modern feature that allowed for wide open metering and then the lens would automatically stop down to the desired aperture just as the photo was take. By the 1970’s most lenses had this feature and they were called “auto” lenses.



              That’s why it is called “Auto-Zoom”.






              share|improve this answer




























                4














                Your lens dates back to a time when some lenses were still completely manual, and the aperture had to be manually closed for stop down metering.



                Your zoom lens has a more modern feature that allowed for wide open metering and then the lens would automatically stop down to the desired aperture just as the photo was take. By the 1970’s most lenses had this feature and they were called “auto” lenses.



                That’s why it is called “Auto-Zoom”.






                share|improve this answer


























                  4












                  4








                  4






                  Your lens dates back to a time when some lenses were still completely manual, and the aperture had to be manually closed for stop down metering.



                  Your zoom lens has a more modern feature that allowed for wide open metering and then the lens would automatically stop down to the desired aperture just as the photo was take. By the 1970’s most lenses had this feature and they were called “auto” lenses.



                  That’s why it is called “Auto-Zoom”.






                  share|improve this answer














                  Your lens dates back to a time when some lenses were still completely manual, and the aperture had to be manually closed for stop down metering.



                  Your zoom lens has a more modern feature that allowed for wide open metering and then the lens would automatically stop down to the desired aperture just as the photo was take. By the 1970’s most lenses had this feature and they were called “auto” lenses.



                  That’s why it is called “Auto-Zoom”.







                  share|improve this answer














                  share|improve this answer



                  share|improve this answer








                  edited 4 hours ago

























                  answered 4 hours ago









                  Mike Sowsun

                  7,3021624




                  7,3021624

























                      0














                      Auto refers to the aperture control, as Mike Sowsun describes. Zoom refers to the ability to change focal length.






                      share|improve this answer


























                        0














                        Auto refers to the aperture control, as Mike Sowsun describes. Zoom refers to the ability to change focal length.






                        share|improve this answer
























                          0












                          0








                          0






                          Auto refers to the aperture control, as Mike Sowsun describes. Zoom refers to the ability to change focal length.






                          share|improve this answer












                          Auto refers to the aperture control, as Mike Sowsun describes. Zoom refers to the ability to change focal length.







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered 1 hour ago









                          xiota

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                          8,13521448






















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