Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,553   Posts: 1,544,952   Online: 792
      
Page 1 of 2 12 LastLast
Results 1 to 10 of 13
  1. #1

    Join Date
    Apr 2009
    Location
    Amherst, NY
    Shooter
    35mm
    Posts
    23

    One-Touch vs. Two-Touch Zoom

    I've bought a Canon FTbN on eBay and would like to buy
    a wide zoom and a long zoom to go with the 50mm, f/1.4.

    One choice is a Canon 28-85mm, f/4.0 and a Canon
    85-300mm, f/4.5 (both are two-touch zooms).

    The other choice is a Vivitar 28-75mm and a Vivitar
    75-300mm, f/4.5 (both are one-touch zooms).

    What are the pros and cons with respect to handling
    a one-touch zoom versus a two-touch zoom? Is one
    easier to use, easier to focus, or optically better?

    TIA,
    Don

  2. #2
    2F/2F's Avatar
    Join Date
    Apr 2008
    Location
    Los Angeles, CA
    Shooter
    Multi Format
    Posts
    8,008
    Images
    4
    It depends. I find that two touch is fine if you have the time to preset your focal length and then shoot (or use an autofocus camera), but I prefer push-pull for when I need to change the FL a lot, and quickly. In practical use, I prefer push-pull myself, but I also think the drawbacks of two touch zooms have been negated by autofocus. Therefore, I don't mind two touch zooms if I am using an AF camera.

    The maximum t stop of the lens will determine how easy it is to focus; not one touch or two touch focusing.
    2F/2F

    "Truth and love are my law and worship. Form and conscience are my manifestation and guide. Nature and peace are my shelter and companions. Order is my attitude. Beauty and perfection are my attack."

    - Rob Tyner (1944 - 1991)

  3. #3

    Join Date
    May 2003
    Location
    Valley Stream, NY
    Shooter
    Multi Format
    Posts
    3,216
    I have one one touch zoom, a Vivtar Series I 28 to 105. I don't like it. It has a tendency to creep. The focal length drifts too easily. I think the two touch zooms are better in this respect.
    Frank Schifano

  4. #4

    Join Date
    Jan 2008
    Location
    Saratoga Springs, NY
    Shooter
    Multi Format
    Posts
    329
    I agree with 2f/2F. with a MF camera, pushpull for the added ability to change focal length on the fly. AF, I tend to like 2 touch more.

  5. #5

    Join Date
    Mar 2005
    Shooter
    35mm
    Posts
    368
    Vivitar Series 1, 28-90 f/2.8-3.5 or the Kiron 28-105. Both are excellent one-touch zooms.

    Kiron Kid

  6. #6
    phenix's Avatar
    Join Date
    Mar 2008
    Location
    penguin-cold Montreal
    Shooter
    Multi Format
    Posts
    218
    On manual focus cameras with one-touch zooms, you get the focus easier at the longer zoom, than just slide it at the desired focal length. But be careful, there are very few zooms that do not preserve the focus when changing the focal. Between these, if I recall, is a short zoom from Vivitar S1 (Kiron) 28-80mm (or something like that). Although those few zooms are optically beautiful. Or am I wrong, and this is a two-touch zoom? I’m not sure anymore, as I avoided it years ago for this same reason.

    As for AF cameras, using a one-touch zoom means to deactivate the AF. Two-touch zooms are best used with AF, as one-touch zooms are with MF.
    B&W is silver.

  7. #7
    MattKing's Avatar
    Join Date
    Apr 2005
    Location
    Delta, British Columbia, Canada
    Shooter
    Multi Format
    Posts
    12,391
    Images
    60
    Two-Touch is my preference, but that may because I greatly prefer fixed focal length lenses to zooms.

    I wonder if there is any correlation between those preferences?

    Matt

  8. #8
    benjiboy's Avatar
    Join Date
    Apr 2005
    Location
    U.K.
    Shooter
    Multi Format
    Posts
    6,826
    I use the Canon FD 75-150 and 100-300 zooms they are both one touch, I would prefer two touch because I find that it's difficult to use the trombone action without turning my wrist and knocking the image out of focus.
    Ben

  9. #9
    Wade D's Avatar
    Join Date
    Feb 2006
    Location
    Jamul, CA
    Shooter
    Multi Format
    Posts
    884
    Images
    3
    I have both types but prefer the two-touch. As mentioned the one-touch tends to creep if not held level. It can be a pain if pointing up or down unless you hold it in position.

  10. #10

    Join Date
    Sep 2007
    Location
    Richmond VA.
    Shooter
    Multi Format
    Posts
    6,842
    I have used both, and like them both. But if push came to shove I'll go to two touch zoom. BTW welcome to APUG.

    Jeff

Page 1 of 2 12 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin