Lenses for Small vs. Full-Frame Sensor

Discussion in 'Beyond the Basics' started by dmfw, Sep 8, 2010.

  1. dmfw

    dmfw TPF Noob!

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    I do not have a Full-Frame Sensor DSLR, but I was wondering if a lens for non-Full-Frame Sensor DSLRs will work, and more importantly work well, with a Full-Frame Sensor camera? Eg. Is there some internal lens difference for the full vs. smaller Sensor sizes?

    The reason for this question. Should I consider the better glass for the lower end camera now so that I can use it on a Full-Frame Sensor camera in the future.

    Thanks
     
  2. Robin Usagani

    Robin Usagani Been spending a lot of time on here!

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    If you have a canon EF-S lenses only fit cropped sensor camera. The EF lenses will fit both.
     
  3. Neil S.

    Neil S. TPF Noob!

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    It would help if you told us what kind of camera you own.

    The different companies use different naming for this.

    If you own a Canon then Schwetty is right.

    If you own a Nikon they call their crop body only lenses DX format, and the ones you can use for either are FX format I believe.

    Other companies, I would have no idea.
     
  4. ann

    ann No longer a newbie, moving up!

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    you can use a dx lens on a nikon full frame camera but it will automatically "crop" the image so basically it takes the full frame sensor to an aps sensor.
     
  5. Neil S.

    Neil S. TPF Noob!

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    Ahh I didnt know this. Thank you.

    I am such a noob when it comes to Nikon... :lol:
     
  6. ann

    ann No longer a newbie, moving up!

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    oops, forgot to mention that it will also reduce the number of pixels;; however, the crop puts the image right in the center of the sensor
     
  7. iskoos

    iskoos TPF Noob!

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    As post #2 stated above EF-S lenses will only fit cropped Canon bodies. EF will fit both. If Nikon DX lenses would also work with full frame Nikon bodies, that's great. I wish this would be possible for Canon. Auto-cropping a full frame sensor is a very good idea...
     
  8. flea77

    flea77 TPF Noob!

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    I think you have this backwards. In Nikon terms, DX is crop frame, FX is full frame. You can use FX lenses on either just fine, but if you use a DX on an FX body it will not be able to generate an image circle large enough to completely cover the sensor. I have heard of some DX lenses still working OK on FX bodies at certain focal lengths but it is not the norm.

    Allan
     
  9. iskoos

    iskoos TPF Noob!

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    No, I don't think I have it backwards. Per what it says in post #4, DX lenses can be used on a full frame Nikon body. Yes a cropped body lens (DX for Nikon and EF-S for canon) will not generate image circle large enough to cover the entire sensor. That's WHERE the auto cropping comes from... Nikon camera crops the sensor so the image circle from a DX lense could cover the image sensor. That way you will not see vignette on corners.
    Canon cameras don't do that as far as I know. If you try and install EF-S lense on a full frame canon camera (it will physically not fit but assume you made and adapter to fit it), you will see vignetting since camera will not reduce the effective sensor size.
    I am not saying what's said for Nikon is true. I do not own Nikon cameras. If what ann states is right(post #4 and #6), then my interpretation is correct I am sure...
     
  10. flea77

    flea77 TPF Noob!

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    Whoops, I stand corrected. I had not seen that feature on Nikon FF cameras. I will have to look into that.

    Allan
     
  11. pbelarge

    pbelarge TPF Noob!

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  12. Derrel

    Derrel Mr. Rain Cloud

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    Some Nikon DX wide-angle lenses will fill "almost" the entire FX image area, or will fill it at focal lengths longer than the minimum. Also, on the FX Nikons that offer the 4:5 aspect ratio, the DX lenses like,for instance, the 35mm 1.8 DX, will fill the 4:5 image aspect capture option's imaging area up pretty well.
     

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