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  1. #1
    Join Date
    Sep 2008
    Location
    Leeds and Sunderland (Between the two all the time)
    Posts
    9

    Why buy DX lens'?

    I had originally thought that the DX lens' cancelled out the crop factor (yeah its good to have it at telephoto, but not so much at the wide-angle), but it turns out it doesn't, - atleast thats how i understand it anyway.

    So yeah with that in mind i struggle to see a reason for buying dx format lens'? If your gonna go to full frame at some time, then your better of buying 'normal' lens, and even if your sticking with dx, your better off wi normal lens anyway coz your camera only sees the centre part of what the lens is seeing, it eliminates barrel distortion. so i understand it anyway lol.

    Am i right in my assumptions, or are there benefits t using dx lens'?
    The Camera
    NIKON D40
    NIKON 18-55mm f/3.5-5.6 ED II AF-S DX
    NIKON 70-300 f/4.5-5.6 ED-IF VR ZOOM
    JOBY GORILLAPOD SLR
    4GB SANDISK ULTRA

    Panasonic Lumix TZ4 (Dads but i use it sometimes)

  2. #2
    Join Date
    Jun 2007
    Location
    Somerset, England
    Posts
    718
    They're usually cheaper, smaller, and lighter. So for the budget user who's not upgrading to a full frame camera in the forseeable future, and/or wants to keep the camera as light and portable as possible, they're a good choice.
    Gear List:
    Canon 40D + Sigma 18-50mm + Canon 55-250mm

    My Gallery

  3. #3
    Join Date
    Sep 2007
    Location
    Near Seattle, WA
    Posts
    368
    Some examples of comparable DX versus FX lenses; all prices from B&H Photo. These lenses have a similar angle of view if the DX lens is mounted on a DX camera (ie: D300) and the FX lens is mounted on an FX camera (ie: D700)

    Comparison 1: Budget tele zoom lens

    DX: Nikon 55-200mm f4-5.6 VR = $219

    FX: Nikon 70-300mm f4.5-5.6 VR = $479 (the 70-300 does add ring type AF-S with full time manual focusing)

    Comparison 2: High quality f2.8 standard zoom lens:

    DX: Nikon 17-55mm f2.8 = $1200

    FX: Nikon 24-70mm f2.8 = $1700

    Both lenses here are high quality professional grade lenses with ring type AF-S.

    Comparison 3: Wide angle lens:

    DX: Nikon 12-24mm f4: $914

    FX: Nikon 17-35mm f2.8: $1500

    Notes: FX is 1 stop faster of course, plus, there's the 14-24/2.8 available for $30 or so more, which no DX lens currently made for Nikon compares to.
    Sam


    Nikon D80, D300s, Nikkormat EL, Tamron 17-50mm f2.8, 55-200mm f4-f5.6 VR AF-S Nikkor, 50mm f1.8 AF-D Nikkor, 80-200mm f2.8 AF-D Nikkor, 135mm f2.8 Nikkor-Q pre-AI, Hanimex 35mm f2.8 doorstop

    www.flickr.com/photos/swpars

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