Lens mount for Rebel XS

Discussion in 'Photography Beginners' Forum' started by sunlou, Jun 8, 2009.

  1. sunlou

    sunlou TPF Noob!

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    Hello, I have a Rebel XS and i've been seraching e bay for cheap lenses to strat building my gear,

    But I can't figure out wich lense will fit or not. I figured at first that my safest uneducated guess was to buy canon lenses. do they all fit.

    For example I won my bid on :

    Canon FD Mount 75-205mm f3.8 Macro Zoom Lens

    Will it fit

    (I think not from what i've read but i am all lost)

    how about this one

    Canon Mt. 80-200mm f=3.5 macro zoom lens AE-1 A1 fin

    thanks
     
  2. Steph

    Steph No longer a newbie, moving up!

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    FD mount lenses (as used on the AE-1 and other manual cameras) won't fit on your Rebel XS. The lenses need to be EF or EF-S mounts to fit. Both lenses you looked at will NOT fit your XS.
     
  3. Overread

    Overread has a hat around here somewhere Staff Member Supporting Member

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    However I belive there are mount adaptors cheapy availble on ebay for most mount conversions. Some have glass optics in them others are just ring adaptors - depending on the mount chances. If your going with a glass containing mount do some research and get a good one
     
  4. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    I wouldn't recommend buying the incompatible lenses and an adapter. It will be much easier to stick with more 'modern' lenses.

    As mentioned, and Canon EF or EF-S lens will work...also, any off brand lens that says it's for 'Canon Auto Focus' should work as well.
     
  5. sunlou

    sunlou TPF Noob!

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    Thanks
     
  6. iadubber

    iadubber TPF Noob!

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    also keep in mind that if you buy EF lenses that you have a 1.6x crop body. So you need to multiply the focal length of the lens by 1.6 to get the actual focal length on an aps-c sensor.
     
  7. Baaaark

    Baaaark TPF Noob!

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    Which makes that 50mm 1.8 that's just a little over a hundred bucks AWESOME for portraits.
     
  8. johnj2803

    johnj2803 TPF Noob!

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    also you might want to know that the"older lenses" will not AF an you will have to manually focus.
     
  9. Dao

    Dao No longer a newbie, moving up!

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    Well, the actual focal length of the lens will not change. If the focal length of the lens is 50mm, it will be 50mm when mounted on any EOS cameras (digital or film). However, when it is mounted on a cropped body, the Field of View will be smaller when compares with the full frame body or 35m film body.
     
  10. musicaleCA

    musicaleCA TPF Noob!

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    Which is why the effective focal length is changed, by a factor of 1.6. A 50mm EF lens on an APS-C body will have the equivalent field-of-view as an 80mm EF lens on a full-frame body. Since focal length is directly related to field-of-view, I fail to see the difference you seem to be trying to point-out...
     
  11. Dao

    Dao No longer a newbie, moving up!

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    "Actual" focal length of a lens will not change. A 50mm lens is always a 50mm lens.


    A 50mm focal length lens is different (optically) from a 80mm lens.
     
  12. Steph

    Steph No longer a newbie, moving up!

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    By definition the focal length is a characteristic of the lens: the focal length of a lens is the distance from the optical center of the lens to the focal point, which is located on the senor/film plane when an object at infinity is in focus. No mention of the camera or size of sensor/film in the definition. The focal length of a lens does not change according to the camera you use it on. There is no such thing as effective focal length by definition. Of course the field of view will change because of different sensor sizes but not because of a different focal lengths.
     

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