What is the Difference between a lens that says AL and one that says AF?

Discussion in 'Digital Photography' started by SolracSelbor, Jan 7, 2008.

  1. SolracSelbor macrumors 6502

    Joined:
    Nov 26, 2007
    #1
    I noticed that Pentax kit lens is an Pentax Zoom Super Wide Angle SMCP-DA 18-55mm f/3.5-5.6 AL im not sure it means auto focus lens because there is no manual switch on the lens to turn off the auto focus. I just got this lens in the mail and i still havnt gotten the body so i dont know if it indeed has autofocus or not.
     
  2. SLC Flyfishing macrumors 65816

    SLC Flyfishing

    Joined:
    Nov 19, 2007
    Location:
    Portland, OR
    #2
    The AL designation means that at least one of the lens elements is aspherical. That lens is autofocus, the reason it has no switch is because it is a screw driven lens, the automatic/manual focus switch will be on the camera body. If you ever get a "SDM" pentax lens or what ever the other 3rd party makers call their lens driven AF, those lenses will have a switch on them to shut off the in-lens autofocusing motors.

    Hope that helps, what body did you order? Great choice to go with Pentax!

    SLC
     
  3. SolracSelbor thread starter macrumors 6502

    Joined:
    Nov 26, 2007
    #3
    Thanks for the help man! I ordered a K10D model off of beach camera. Im kinda ticked off though because Fedex says that it will arrive on Jan. 9th, 2008 but I live on a college dormitory and since it is winter session the main office is only open from 10am-noon. Meaning that if it doesnt come in by that time I will have to wait the next day, but I am going on vacation that day. Do you know if fedex will let me pick it up myself? Or maybe if i stand in front of the door they will let me sign for it?
     
  4. SLC Flyfishing macrumors 65816

    SLC Flyfishing

    Joined:
    Nov 19, 2007
    Location:
    Portland, OR
    #4
    Fedex will usually let you pick things up yourself, just give em a call and see.

    Bwoods
     
  5. Macerture macrumors member

    Macerture

    Joined:
    Jan 2, 2008
    Location:
    Dirty Jersey

Share This Page