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Question on currency of some Canon EF lenses - Photography

I've been comparing Canon's own listing off the web with lenses offered by suppliers here in the UK. Some lenses appear to be offered that are not in Canon's list. Could these be discontinued, or could Canon's list be less than up to date? The lenses concerned are: 90-300mm, f/4-5.6, USM and non-USM 28-105mm, f/4-5.6, non-USM 28-200mm, f/3.5-5.6, non-USM. While I'm here, does any one know what AFD is, in respect of auto-focus? The way it is listed it is clearly different from USM and MM. TIA. -- Alan F Cross...

  1. #1

    Default Question on currency of some Canon EF lenses

    I've been comparing Canon's own listing off the web with lenses offered
    by suppliers here in the UK.

    Some lenses appear to be offered that are not in Canon's list. Could
    these be discontinued, or could Canon's list be less than up to date?

    The lenses concerned are:

    90-300mm, f/4-5.6, USM and non-USM
    28-105mm, f/4-5.6, non-USM
    28-200mm, f/3.5-5.6, non-USM.

    While I'm here, does any one know what AFD is, in respect of auto-focus?
    The way it is listed it is clearly different from USM and MM.

    TIA.
    --
    Alan F Cross
    Alan F Cross Guest

  2. #2

    Default Re: Question on currency of some Canon EF lenses

    Alan,

    I can only help with the AFD. It stands for "Arc Form Drive". These are
    traditional electromagnetic motors rather than USM, much like Micro-Motor.
    Here's and interesting article

    [url]http://photonotes.org/articles/beginner-faq/lenses.html#lensmotor[/url]

    Steve.


    "Alan F Cross" <alanxproaxis.demon.co.uk> wrote in message
    news:ViEPowTdM0D$EwcDproaxis.demon.co.uk...
    > I've been comparing Canon's own listing off the web with lenses offered
    > by suppliers here in the UK.
    >
    > Some lenses appear to be offered that are not in Canon's list. Could
    > these be discontinued, or could Canon's list be less than up to date?
    >
    > The lenses concerned are:
    >
    > 90-300mm, f/4-5.6, USM and non-USM
    > 28-105mm, f/4-5.6, non-USM
    > 28-200mm, f/3.5-5.6, non-USM.
    >
    > While I'm here, does any one know what AFD is, in respect of auto-focus?
    > The way it is listed it is clearly different from USM and MM.
    >
    > TIA.
    > --
    > Alan F Cross

    ---
    Posted via [url]news://freenews.netfront.net[/url]
    Complaints to [email]newsnetfront.net[/email]
    Sting Guest

  3. #3

    Default Re: Question on currency of some Canon EF lenses

    or this one;

    [url]http://www.photo.net/canon/lens-motors[/url]

    Steve


    "Sting" <stingsting.com> wrote in message
    news:benilj$2pqc$1adenine.netfront.net...
    > Alan,
    >
    > I can only help with the AFD. It stands for "Arc Form Drive". These are
    > traditional electromagnetic motors rather than USM, much like Micro-Motor.
    > Here's and interesting article
    >
    > [url]http://photonotes.org/articles/beginner-faq/lenses.html#lensmotor[/url]
    >
    > Steve.
    >
    >
    > "Alan F Cross" <alanxproaxis.demon.co.uk> wrote in message
    > news:ViEPowTdM0D$EwcDproaxis.demon.co.uk...
    > > I've been comparing Canon's own listing off the web with lenses offered
    > > by suppliers here in the UK.
    > >
    > > Some lenses appear to be offered that are not in Canon's list. Could
    > > these be discontinued, or could Canon's list be less than up to date?
    > >
    > > The lenses concerned are:
    > >
    > > 90-300mm, f/4-5.6, USM and non-USM
    > > 28-105mm, f/4-5.6, non-USM
    > > 28-200mm, f/3.5-5.6, non-USM.
    > >
    > > While I'm here, does any one know what AFD is, in respect of auto-focus?
    > > The way it is listed it is clearly different from USM and MM.
    > >
    > > TIA.
    > > --
    > > Alan F Cross
    >
    >
    > ---
    > Posted via [url]news://freenews.netfront.net[/url]
    > Complaints to [email]newsnetfront.net[/email]

    ---
    Posted via [url]news://freenews.netfront.net[/url]
    Complaints to [email]newsnetfront.net[/email]
    Sting Guest

  4. #4

    Default Re: Question on currency of some Canon EF lenses

    "Alan F Cross" <alanxproaxis.demon.co.uk> wrote in message
    news:ViEPowTdM0D$EwcDproaxis.demon.co.uk...
    > Some lenses appear to be offered that are not in Canon's list. Could
    > these be discontinued, or could Canon's list be less than up to date?
    >
    > The lenses concerned are:
    > 90-300mm, f/4-5.6, USM and non-USM
    > 28-105mm, f/4-5.6, non-USM
    > 28-200mm, f/3.5-5.6, non-USM.
    >
    That 28-105 and the 90-300 are recent additions to Canon's budget range so
    nay not be on the site yet. The 28-200 has been around for a couple of
    years, but like all "superzooms" it's a bit of a dog, so Canon probably
    don't wish to "'fess up"


    Tony Parkinson Guest

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