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EF-S lens of EF body

Discussion in 'Canon Conflab' started by RogerMac, May 14, 2017.

  1. RogerMac

    RogerMac Well-Known Member

    Does it do damage damage / is it possible to attach an EF-S lens to a FF body. I ask because I have just bought my daughter a birthday present of an EF-S lens which should arrive later today and I would like to test it before I give it to her, but I only have a 6D body to test it on. I know all about vignetting so I am not expecting quality results outside the central portion but I would like to give it the once over before we wrap it up

    Thanks in advance.
  2. SXH

    SXH Well-Known Member

    According to this page:

    That help?
  3. MJB

    MJB Well-Known Member

    I've just compared my EF and EF-S mounts and an EF-S lens with protrude 2-3mm further into the camera body. Whether this is enough to come into contact with anything it shouldn't on a 6d I don't know. The contacts appear to be in the same place though.
  4. Andrew Flannigan

    Andrew Flannigan Well-Known Member

    If the rear element of the E-FS lens is inside the mirror's swing arc you're looking at a scratched rear element, crunched mirror or both. This would not be good :(
  5. RogerMac

    RogerMac Well-Known Member

  6. PeteRob

    PeteRob Well-Known Member

    You cannot connect an EF-S lens to an EF body. The rear of the lens will hit the mirror. I would have thought as a safety matter they would make them impossible to attach but I don't know for sure.
  7. RogerMac

    RogerMac Well-Known Member

    Thanks all. I shan't even think about it!
  8. RogerMac

    RogerMac Well-Known Member

    Golly!- I ordered it at about 4pm yesterday paid a bit extra for Sunday delivery and it arrived before 11am today. I am well i,pressed
    EightBitTony likes this.
  9. EightBitTony

    EightBitTony Well-Known Member

    Canon EF-S lenses have additional elements in the mount ring that physically prevents them being attached to a full frame body.

    Non-Canon lenses may or may not have that protection built in.

    You can't actually physically mount Canon EF-S lenses to a Canon Full Frame body - they physically don't fit.
    RogerMac likes this.
  10. RogerMac

    RogerMac Well-Known Member

    Seems as though Canon has done a thorough job. The new lens is in fact a full Canon (55-250 tele zoom) so there should be no problems with inadvertent lending

  11. Snorri

    Snorri Well-Known Member

    Yes you will damage both. Given that you actually get the lens on the mirror will hit the back of the lens so you would see damage to bothe the back of the lens as well as the mirror. The reason is that the first element in the ef-s lens can be considerably closer to the sensor, Canon use 'this fact to make the lenses smaller and lighter.

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