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Zoom that are open?

Discussion in 'Adapted Lenses' started by alaios, Feb 2, 2013.

  1. alaios

    alaios TalkEmount All-Pro

    Jan 11, 2013
    Düsseldorf
    Alex
    Hi,
    I am mostly wondering if there are zooms in the area of 80-200 that can be open enough at 150-200mm... and giving something like f2.8 or f3.

    I am mostly asking to see if is technical feasible to have a zoom lens that can allow so much light go inside the sensor.

    Regards
    Alex
     
  2. Poki

    Poki TalkEmount Hall of Famer

    Aug 30, 2011
    Austria
    Sure. There's the Canon 70-200 f/2.8. Then there's the Sony 70.200 2.8. Oh, and there's a Nikon 70-200 2.8. Ah, and not forget the Zeiss 70-200mm T/2.9 (from the compact zoom series). And I'm sure there are other brands too which build these lenses.

    The only problem? The price. You can't get such a lens for less than 1500 - the Zeiss one is even 20.000.

    Edit: Just remembered there's a 85-300mm T/2.9 lens from Fuji - if you're willing to spend 38.000.
     
  3. Bimjo

    Bimjo Super Moderator

    Oct 28, 2011
    Washington State
    Jim
    Size and weight become an issue as well. I just sold my Sigma 70-200/2.8 zoom. Stellar for a zoom lens, worked a trick. I never took it anywhere because it weighed so much. I really couldn't justify keeping a lens that expensive just to shoot around the yard.
     
  4. Poki

    Poki TalkEmount Hall of Famer

    Aug 30, 2011
    Austria
    Then there's the question if you really need a zoom in this range. There are superb 85mm f/1.4, 135mm f/1.8 and 200mm f/2.8 primes - and you could (almost) buy two of them for the price of one zoom.
     
  5. Bimjo

    Bimjo Super Moderator

    Oct 28, 2011
    Washington State
    Jim
    Very true. No zoom will equal the IQ that a fast prime lens will give you. Then again a zoom can be very useful when your environment is constrained (can't back up far enough etc.).